Ebyte E49-400T30S User manual

E49-400T30S Specifications
433MHz SMD Wireless Module

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T30S Specifications
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
1
CATALOG
Ⅰ OVERVIEW................................................................................................................................................ 3
1.1 INTRODUCTION .......................................................................................................................................................................................... 3
1.2 FEATURES ..................................................................................................................................................................................................3
1.3 APPLICATION SCENARIOS......................................................................................................................................................................... 3
Ⅱ SPECIFICATIONS................................................................................................................................... 4
2.1 LIMIT PARAMETERS .................................................................................................................................................................................. 4
2.2 WORKING PARAMETERS ...............................................................................................................................................................................4
Ⅲ DIMENSIONS AND PIN DEFINITIONS ..................................................................................................5
Ⅳ RECOMMENDED WIRING DIAGRAM .......................................................................................................... 6
Ⅴ DETAILED FUNCTION............................................................................................................................. 6
5.1 MODULE RESET..........................................................................................................................................................................................6
5.2 AUX DETAILED EXPLANATION.................................................................................................................................................................7
5.2.1 Wireless reception indication.................................................................................................................................... 7
5.2.2 Wireless transmission indication............................................................................................................................. 7
5.2.3 Resetting and exiting sleep mode............................................................................................................................. 7
5.3.4 AUX Notes...................................................................................................................................................................................8
5.3.5 Detailed explanation of fixed-point mode...........................................................................................................8
5.3.6 BROADCAST TRANSMISSION ...................................................................................................................................................................9
5.3.7 BROADCAST ADDRESS ............................................................................................................................................................................9
5.3.8 LISTEN ADDRESS ................................................................................................................................................................................. 9
Ⅵ OPERATING MODE................................................................................................................................. 10
6.1 MODE SWITCH ......................................................................................................................................................................................... 10
6.2 TRANSMISSION MODE (MODE 0).......................................................................................................................................................... 11
6.3 RSSI MODE (MODE 1)........................................................................................................................................................................11
6.4 SETUP MODE (MODE 2)....................................................................................................................................................................... 11
6.5 SLEEP MODE (MODE 3)....................................................................................................................................................................... 12
6.6 QUICK COMMUNICATION TEST .................................................................................................................................................................12
Ⅶ INSTRUCTION FORMAT .........................................................................................................................13
7.1 FACTORY DEFAULT PARAMETERS .............................................................................................................................................................13
7.2 READING OF WORKING PARAMETERS .......................................................................................................................................................13

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7.3 READING OF VERSION NUMBER.............................................................................................................................................................. 13
7.4 PARAMETER SETTING INSTRUCTIONS ..................................................................................................................................................... 13
Ⅷ HARDWARE DESIGN............................................................................................................................... 16
Ⅸ COMMON PROBLEM ................................................................................................................................. 17
9.1 THE TRANSMISSION DISTANCE IS NOT IDEAL....................................................................................................................................17
9.2 MODULE IS EASILY DAMAGED ........................................................................................................................................................... 17
9.3 BIT ERROR RATE TOO HIGH ................................................................................................................................................................ 17
Ⅹ WELDING WORK GUIDE.........................................................................................................................18
10.1 REFLOW TEMPERATURE .......................................................................................................................................................................... 18
10.2 REFLOW SOLDERING CURVE .................................................................................................................................................................19
Ⅺ RELATED MODELS ................................................................................................................................. 19
Ⅻ ANTENNA GUIDE ................................................................................................................................... 20
12.1 ANTENNA RECOMMENDATION.................................................................................................................................................................. 20
XIII BULK PACKAGING.............................................................................................................................21
REVISE HISTORY ....................................................................................................................................... 21
ABOUT US.................................................................................................................................................... 21

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T30S Specifications
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
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Ⅰ Overview
1.1 Introduction
E49-400T30S is a super cost-effective wireless data transmission module
launched by Chengdu Ebyte. It has 4 working modes. Each transmission method
has its own characteristics and can be applied to various application scenarios.
E49-400T30S can perfectly support industrial-grade applications, and has
undergone rigorous testing at the factory to ensure its industrial reliability
and batch consistency.
E49-400T30S supports a maximum transmit power of 20dBm. Users can set lower
output power to save power consumption. The module works in the 433MHz frequency
band, with TTL level output, and is compatible with 3.3V IO port voltage.
The module has data encryption function. The data transmitted by the module in the air has randomness. Through
strict encryption and decryption algorithm, the data interception is meaningless, the probability of interference
is reduced, and the reliability and transmission efficiency are improved. And it is a low-cost wireless serial
transceiver module.
1.2 Features
The measured communication distance can reach 5.6km;
The maximum transmit power is 30 dB, and the software is multi-level adjustable;
Support global license-free ISM 433MHz frequency band;
Support data transmission rate of 1.2Kbps～200Kbps;
Support low power consumption mode, suitable for battery applications;
Support advanced ultra-narrowband GFSK modulation;
Support 2.6V~5.5V power supply;
Industrial-grade standard design, support long-term use at -40 ~ 85°C;
Support stamp hole and IPEX interface, users can choose to use according to their own needs.
1.3 Application scenarios
Wearable devices;
Smart home and industrial sensors, etc.;
Security system, positioning system;
Wireless remote control, drone;
Wireless game remote control;
Healthcare products;
Wireless voice, wireless headset;
Automotive industry applications.

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Ⅱ Specifications
2.1 Limit parameters
Main parameters
Performance
Remark
Minimum
Maximum
Supply voltage (V)
0
5.5
More than 5.5V will permanently
burn the module
Blocking power (dBm)
-
10
It is less likely to burn when used
at close range.
Working temperature (℃)
-40
85
2.2 Working parameters
Main parameters
Performance
Remark
Minimum
Typical
Maximum
Working voltage (V)
2.6
5
5.5
Communication level (V)
3.3
Risk of burnout with 5V TTL
Working temperature (℃)
-40
-
85
Industrial grade design
Working frequency band (MHz)
410
433
510
upport ISM band
Pow
er
con
sum
pti
on
Emission current (mA)
550
Instantaneous power consumption
Receive current (mA)
18
Sleep current (μA)
1.2
software shutdown
Maximum transmit power (dBm)
-
-
30.0
Receive Sensitivity (dBm)
-119
-120
-121
The air rate is 1.2kbps
Air rate (bps)
1.2k
2.4k
200k
User programming control
Main parameters
Description
Remark
Reference distance
5.6Km
Clear and open environment, antenna gain 5dBi,
antenna height 2.5m, air rate 1.2kbp
Subcontracting method
54 Btye
The maximum capacity of a single package, it will
be automatically sub-packaged when it exceeds.
Cache capacity
500 Btye
Modulation method
GFSK
Communication Interface
UART serial port
Packaging method
SMD
Interface
1.27mm

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Dimensions
26*16mm
Antenna interface
IPEX/ Stamp hole
Equivalent impedance is about 50 ohms
Ⅲ Dimensions and Pin Definitions
Pin
number
Pin
name
Pin Orientation
Pin Usage
1
GND
Input
Module ground
2
VCC
Input
DC Module power positive reference, voltage range: 3.3 ~ 5.5V DC
3
AUX
Output
Used to indicate the working state of the module; the user wakes up the external MCU, and outputs a low level
during the power-on self-test initialization; (can be left floating)
4
TXD
Output
TTL serial output, connected to external RXD input pin;
5
RXD
Input
TTL serial port input, connected to the external TXD output pin;
6
M1
Input (very weak
pull-up)
Cooperate with M0 to determine the 4 working modes of the module (can not be suspended, if not used, it
can be grounded)
7
M0
Input (very weak
pull-up)
Cooperate with M1 to determine the 4 working modes of the module (can not be suspended, if not used, it
can be grounded)
11
ANT
Output
Antenna interface (high frequency signal output, 50 ohm characteristic impedance)
12
GND
Fixedly
13
GND
Fixedly
14
GND
Fixedly
18
NC
Input/Output
NC pin, this pin needs to be left floating (for subsequent expansion)
19
NC
Input/Output
NC pin, this pin needs to be left floating (for subsequent expansion)

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20
NC
Input/Output
NC pin, this pin needs to be left floating (for subsequent expansion)
21
NC
Input
download port --VCC (Hanging, users do not need to pay attention)
22
NC
Input
download port –SWDIO (Hanging, users do not need to pay attention)
23
GND
Input
download port --GND (Hanging, users do not need to pay attention)
24
NC
Input
download port --SWCLK (Hanging, users do not need to pay attention)
Ⅳ Recommended wiring diagram
Serial
Number
A brief description of the connection between the module and the microcontroller (the above picture
takes the STM8L microcontroller as an example)
1
The wireless serial port module is TTL level, please connect with TTL level MCU.
2
Some 5V microcontrollers may need to add 4~10K pull-up resistors to the TXD and AUX pins of the
module.
Ⅴ Detailed function
5.1 Module reset
After the module is powered on, AUX will output a low level immediately, perform hardware self-test, and set
the working mode according to user parameters. During this process, the AUX keeps the low level, and after the
completion, the AUX outputs the high level, and starts to work normally according to the working mode formed by
the combination of M1 and M0. Therefore, the user needs to wait for the rising edge of AUX as the starting point
for the normal operation of the module.

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5.2 AUX detailed explanation
AUX is used for wireless transceiver buffer indication and self-check indication.
It indicates whether the module has data that has not been transmitted wirelessly, or whether the wireless
data has been received and not all sent through the serial port, or the module is in the process of initializing
and self-checking.
5.2.1 Wireless reception indication
After the module receives valid wireless data, it will immediately pull down AUX, and start the
serial port to output data. After the data output is completed, it will pull up AUX.
5.2.2 Wireless transmission indication
After the module receives the serial port data, it will pull down AUX immediately and start sending
data wirelessly. After all data is sent, pull up AUX again.
5.2.3 Resetting and exiting sleep mode
Only at reset and when exiting sleep mode

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5.3.4 AUX Notes
For the above functions 1 and 2, the output low level has priority, that is, if any one of the output low
level conditions is satisfied, the AUX outputs the low level; when all the low level conditions are not satisfied,
the AUX outputs the high level.
When AUX outputs a low level, it means that the module is busy, and the working mode detection will not be
performed at this time; when the module AUX outputs a high level, the mode switching will be completed.
When the user enters other modes from mode 3 (sleep mode) or during the reset process, the module will reset
the user parameters, during which AUX outputs a low level.
5.3.5 Detailed explanation of fixed-point mode

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5.3.6 Broadcast transmission
5.3.7 Broadcast address
Example: Set the address of module A to 0xFFFF and the channel to 0x04.
When module A is used as a transmitter (same mode, transparent transmission mode), all receiving modules under
the 0x04 channel can receive data to achieve the purpose of broadcasting.
5.3.8 Listen address
Example: Set the address of module A to 0xFFFF and the channel to 0x04.
When module A is used as a receiver, it can receive all the data under the 0x04 channel to achieve the purpose
of monitoring.

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Ⅵ Operating mode
The module has four working modes, which are set by pins M0 and M1; the details are shown in the following
table:
Mode（0-3）
M1
M0
Mode Introduction
Remark
0 transfer
mode
0
0
The serial port is opened, the wireless is opened, and the
module sends and receives data according to the set
transmission mode.
The transmission
method of the sender
and receiver must be
the same
1 RSSI mode
0
1
When the wireless is turned off and the serial port is turned
on, the module will output the RSSI signal strength value
every 100ms.
Relative intensity
values only
2 set mode
1
0
Wireless off, can receive serial commands, see command list,
baud rate fixed 9600, 8N1
parameter
configuration
3 sleep mode
1
1
The module goes to sleep standby, and the serial port and
wireless are closed.
Ultra-low power
sleep
6.1 Mode switch
Users can combine M0 and M1 with high and low levels to determine the working mode of the module. The 2 GPIOs
of the MCU can be used to control the mode switching; when M0 and M1 are changed: the module is idle, and
after 1ms, it can start to work according to the new mode; if the module has serial port data that has not
been transmitted wirelessly, after the transmission is completed, can enter the new working mode; if the
module receives the wireless data and sends out the data through the serial port, it needs to send the data
to enter the new working mode; so the mode switching can only be valid when the AUX output is 1, otherwise
it will be delayed switch.
For example: in mode 0, the user continuously inputs a large amount of data and performs mode switching at
the same time, and the switching mode operation is invalid at this time; the module will only perform new
mode detection after processing all user data; therefore, it is generally recommended to be : Detect the
output state of the AUX pin, wait 2ms after the AUX output is high, and then switch.
When the module is switched from other modes to sleep mode, if there is data that has not been processed
yet; the module can only enter sleep mode after processing these data (including receiving and sending).
This feature can be used for fast sleep to save power consumption; for example: the transmitter module works
in mode 0, the user initiates serial port data "12345", and then does not need to wait for the AUX pin to
be idle (high level), and can directly switch to sleep mode, The main MCU of the user is put to sleep immediately,
and the module will automatically go to sleep within 1ms after sending all the user data wirelessly, thereby
saving the working time of the MCU and reducing power consumption.
Similarly, any mode switching can use this feature. After the module processes the current mode event, it
will automatically enter the new mode within 1ms; thus saving the user's work of querying AUX, and achieving
the purpose of fast switching , such as switching from transmit mode to setting mode; the user MCU can also
go to sleep in advance before mode switching, and use the external interrupt function to obtain AUX changes
to perform mode switching.
This operation mode is very flexible and efficient. It is completely designed according to the user's MCU
operation convenience, and can reduce the workload of the entire system as much as possible, improve system
efficiency, and reduce power consumption.

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6.2 Transmission Mode (Mode 0)
Type
When M0 = 0, M1 = 0, the module works in mode 0
emissi
on
The module receives user data from the serial port, and the maximum length of the wireless data
packet transmitted by the module is 54 bytes. When the amount of data input by the user reaches
54 bytes, the module will start wireless transmission, and the user can continue to input the
data to be transmitted.
When the bytes that the user needs to transmit is less than 54 bytes, the module waits for about
20ms. If no user data continues to be input, the data is considered to be terminated, and the
module sends all data wirelessly.
When the module receives the first user data, it will output the AUX low level, when the module
put all the data into the RF chip and start the transmission, the AUX output will be high level.
At this point, it indicates that the transmission of the last packet of wireless data has been
started, and the user can continue to input data.
Data packets sent through mode 0 can only be received by the receiving module in mode 0.
receiv
e
The module has always turned on the wireless receiving function, and can receive data packets
from mode 0.
After receiving the data packet, after the module AUX outputs low level, it starts to send wireless
data through the serial port TXD pin. After all wireless data is output through the serial port,
the module outputs AUX high level.
6.3 RSSI Mode (Mode 1)
Type
When M0 = 1, M1 = 0, the module works in mode 1
emissio
n
Wireless transmission is not possible, and the received serial data will be discarded.
receive
Can not receive air wireless data, only scan the signal strength of the current channel, output
a strength value (relative value) through the serial port every 100ms.
Numerical calculation method: signal strength = -(256(decimal) – data(decimal)) dBm
If the hexadecimal value output by the serial port is 0x91, the actual signal strength is:
-(256(decimal) – 145(decimal))=-111dBm
6.4 Setup Mode (Mode 2)
Type
When M0 = 0, M1 = 1 the module works in mode 2
emissio
n
Wireless transmission is not possible, and the received serial data will be discarded.
receive
Wireless reception is not possible
set
Can be used for module parameter setting, using serial port 9600, 8N1, setting module working
parameters through specific command format
note
When entering other modes from the setting mode, the module will reconfigure the parameters.
During the configuration process, AUX remains low;
After completion, it outputs a high level, so it is recommended that the user detect the rising
edge of AUX.

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6.5 Sleep Mode (Mode 3)
Type
When M0 = 1, M1 = 1, the module works in mode 3
emissio
n
Unable to transmit wireless data.
receive
Unable to receive wireless data.
other
In the ultra-low power consumption state, all other functions of the module are turned off,
and the sleep mode can only be exited by switching the state of M1M0.
6.6 Quick communication test
Step
Specific operation
1
Connect the E49-400T30S module to the E49-TBL backplane, then plug it into the USB test board
(E15-USB-T2), plug it into the computer, and make sure the driver has been installed correctly;
Plug in the mode selection jumper cap on the USB test board (ie M1=0, M0=0),
2
Select 5V (module supports 2.6~5.5V).
3
Run the "Serial port debugging assistant" software, select the correct serial port number, and
observe the sending window and the corresponding receiving window.

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Ⅶ Instruction format
In command mode (mode 2: M0=0, M1=1), the list of supported commands is as follows (when setting, only 9600
and 8N1 formats are supported):
serial
number
Instruction
format
Detailed description
1
C0+ Working
parameters
Send C0+5 bytes working parameters in hexadecimal format, a total of 6
bytes, must be sent continuously (power-off save)
2
C1+C1+C1
Send three C1s in hexadecimal format, and the module returns the saved
parameters, which must be sent continuously.
3
C2+ Working
parameters
Send C2+5 bytes working parameters in hexadecimal format, a total of 6
bytes, must be sent continuously (not saved when power off)
4
C3+C3+C3
Three C3s are sent in hexadecimal format, and the module returns version
information, which must be sent continuously.
7.1 Factory default parameters
model
Factory default parameter values:C0 00 00 19 2E 00
Module model
frequency
address
channel
air speed
baud rate
transmit power
E49-400T20S
433MHz
0x0000
0x2E
2.4kbps
9600
30
7.2 Reading of working parameters
Instruction format
Detailed description
C1+C1+C1
In the setting mode (M0=0, M1=1), send a command (HEX format) to the module serial
port: C1 C1 C1,
The module will return the current configuration parameters, for example: C0 00
00 18 20 00.
7.3 Reading of version number
Instruction format
Detailed description
C3+C3+C3
In the setting mode (M0=0, M1=1), send a command (HEX format) to the module
serial port: C3 C3 C3,
The module will return the current configuration parameters, such as: C3 49 xx yy;
49 here represents the module model (E49 series), xx is the version number, and yy
refers to other features of the module (users can ignore).
7.4 Parameter setting instructions
serial
name
description
remark

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num
ber
0
HEAD
Fixed 0xC0 or 0xC2, indicating that this frame data is a
control command
Must be 0xC0 or C2
C0: The set parameters will be
saved after power off.
C2: The set parameters will not be
saved after power off.
1
ADDH
Module address high byte (default 00H)
00H-FFH
2
ADDL
Module address low byte (default 00H)
00H-FFH
3
SPED
Rate parameters, including serial rate and air rate
7, 6: serial port check digit
00: 8N1 (default)
01: 8O1
10:8E1
11: 8N1
-------------------------------------------------
5, 4, 3 TTL serial port rate (bps)
000: The serial port baud rate is 1200
001: The serial port baud rate is 2400
010: The serial port baud rate is 4800
011: The serial port baud rate is 9600
(default)
100: The serial port baud rate is 19200
101: The serial port baud rate is 38400
110: The serial port baud rate is 57600
111: The serial port baud rate is 115200
-------------------------------------------------
2, 1, 0 Wireless air rate (bps)
000: air rate is 1.2k
001: Air rate is 2.4k (default)
010: Air rate is 4.8k
011: Air rate is 9.6k
100: 19.2k air rate
101: Air rate is 50k
110: Air rate is 100k
111: Air rate is 200k
----------------------------------------
The baud rate of both
communication parties can be
different
The serial port baud rate has
nothing to do with wireless
transmission parameters, and does
not affect the wireless transceiver
characteristics.
----------------------------------------
----------------------------------------
The lower the air rate, the longer
the distance, the stronger the
anti-interference performance and
the longer the sending time.
The air wireless transmission
rate of both parties must be the
same.
4
CHAN
7, 6, 5, 4, 3, 2, 1, 0 Communication channel
Communication frequency (410M + CHAN * 0.5M)
(default 0x2E: 433M)
----------------------------------------
00H-C8H,
Corresponding to 410~510 MHz
5
OPTION
7. Fixed-point transmission enable bit (like MODBUS)
0: Transparent transmission mode (default)
1: Fixed point transmission mode
-------------------------------------------------
6, 5, 4, 3, 2 Reserved bits, write 0
-------------------------------------------------
1, 0 transmit power (approximate)
00: 20 dBm (default)
01: 17dBm
10: 14dBm
11: 10dBm
When it is 1, the first 3 bytes of
each user data frame are used as
channel, high and low addresses.
Change its own address and
channel when transmitting, and
restore the original settings after
completion.
----------------------------------------
----------------------------------------
The external power supply must
provide a current output capability
of more than 100mA. And ensure
that the power supply ripple is less
than 100mV.
It is not recommended to use
low power transmission, and its
power utilization efficiency is not
high.
For example (the meaning of the serial number 3 "SPED" byte):

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the binary bit of the
byte
7
6
5
4
3
2
1
0
Specific value (user
configuration)
0
0
0
1
1
0
0
1
meaning
Serial check bit 8N1
Serial port baud rate is 9600
Air rate is 2.4k
corresponding
hexadecimal
1
9

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Ⅷ Hardware design
It is recommended to use a DC regulated power supply to supply power to the module, the power supply ripple
coefficient should be as small as possible, and the module should be grounded reliably;
Please pay attention to the correct connection of the positive and negative poles of the power supply,
such as reverse connection may cause permanent damage to the module;
Please check the power supply to ensure that it is between the recommended power supply voltages. If it
exceeds the maximum value, the module will be permanently damaged;
Please check the stability of the power supply, the voltage should not fluctuate greatly and frequently;
When designing the power supply circuit for the module, it is often recommended to reserve more than 30%
of the margin, so that the whole machine can work stably for a long time;
The module should be kept as far away as possible from the power supply, transformer, high-frequency wiring
and other parts with large electromagnetic interference;
High-frequency digital traces, high-frequency analog traces, and power traces must avoid the underside
of the module. If it is absolutely necessary to pass under the module, assuming that the module is soldered
on the Top Layer, lay copper on the Top Layer of the contact part of the module. Copper and well grounded),
must be close to the digital part of the module and routed on the Bottom Layer;
Assuming that the module is soldered or placed on the Top Layer, it is also wrong to arbitrarily route
wires on the Bottom Layer or other layers, which will affect the stray and receiving sensitivity of the module
to varying degrees;
Assuming that there are devices with large electromagnetic interference around the module, it will greatly
affect the performance of the module. It is recommended to stay away from the module according to the intensity
of the interference. If the situation allows, appropriate isolation and shielding can be done;
Assuming that there are traces with large electromagnetic interference around the module (high-frequency
digital, high-frequency analog, power traces), the performance of the module will also be greatly affected.
It is recommended to stay away from the module according to the intensity of the interference. Proper isolation
and shielding;
If the communication line uses a 5V level, a 1k-5.1k resistor must be connected in series (not recommended,
there is still a risk of damage);
Try to stay away from some TTL protocols whose physical layer is also 2.4GHz, such as USB3.0;
The antenna installation structure has a great influence on the performance of the module. Make sure that
the antenna is exposed, preferably vertically upward. When the module is installed inside the casing, a
high-quality antenna extension cable can be used to extend the antenna to the outside of the casing;
The antenna must not be installed inside the metal shell, which will greatly reduce the transmission
distance.

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Ⅸ Common problem
9.1 The transmission distance is not ideal
When there is a straight line communication obstacle, the communication distance will be correspondingly
attenuated;
Temperature, humidity, and co-channel interference will increase the communication packet loss rate;
The ground absorbs and reflects radio waves, and the test effect close to the ground is poor;
Seawater has a strong ability to absorb radio waves, so the seaside test effect is poor.
If there is a metal object near the antenna, or is placed in a metal shell, the signal attenuation will
be very serious;
The power register is set incorrectly, and the air rate is set too high (the higher the air rate, the
closer the distance);
The low voltage of the power supply at room temperature is lower than the recommended value, and the lower
the voltage, the lower the output power;
The antenna used is poorly matched with the module or the quality of the antenna itself is faulty.
9.2 Module is easily damaged
Please check the power supply to ensure that it is within the recommended power supply voltage. If it exceeds the
maximum value, the module will be permanently damaged.
Please check the stability of the power supply, the voltage should not fluctuate greatly and frequently.
Please ensure anti-static operation during installation and use, and high-frequency components are sensitive to
static electricity.
Please ensure that the humidity during installation and use should not be too high. Some components are
humidity-sensitive devices.
If there is no special requirement, it is not recommended to use it at too high or too low temperature.
9.3 Bit error rate too high
There is co-frequency signal interference nearby, stay away from the interference source or modify the frequency and
channel to avoid interference;
If the power supply is not ideal, it may also cause garbled characters. Be sure to ensure the reliability of the power
supply;
Poor quality or too long extension lines and feeders will also cause a high bit error rate;

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T30S Specifications
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
18
Ⅹ Welding work guide
10.1 reflow temperature
Profile Feature
曲线特征 Curve feature
Sn-Pb Assembly
Pb-Free Assembly
Solder Paste
solder paste
Sn63/Pb37
Sn96.5/Ag3/Cu0.5
Preheat Temperature min （Tsmin）
Minimum preheat
temperature
100℃
150℃
Preheat temperature max (Tsmax)
maximum preheat
temperature
150℃
200℃
Preheat Time (Tsmin to Tsmax)(ts)
Preheat time
60-120 sec
60-120 sec
Average ramp-up rate(Tsmax to Tp)
average rate of ascent
3℃/second max
3℃/second max
Liquidous Temperature (TL)
liquidus temperature
183℃
217℃
Time（tL）Maintained Above（TL）
time above liquidus
60-90 sec
30-90 sec
Peak temperature（Tp）
peak temperature
220-235℃
230-250℃
Aveage ramp-down rate（Tp to Tsmax）
average rate of descent
6℃/second max
6℃/second max
Time 25℃to peak temperature
Time from 25°C to peak
temperature
6 minutes max
8 minutes max

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T30S Specifications
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
19
10.2 Reflow Soldering Curve
Ⅺ Related models
Product number
Chip
carrier
frequency
Hz
transmit
power
dBm
test
distance
km
air speed
bps
Packag
e form
Product
Size
mm
Antenna form
E49-400T20S
-
433M
20
1
1.2k~200k
SMD
26 * 16
IPEX/stamp hole