Seiko SC-20S User manual

Messrs.
（
first
・
revised
）
Product No. ：Quartz Crystal Unit SC-20S
Item code ：Q-SC20S03220C5AAAF
Product form
：32.768kHz ±20 × 10-6 / 12.5pF
The number of copies ：1copy
Data of registration ：
〈
NOTICE
〉
1
.
Advance agreement will be needed before changing any contents of the specification herein
.
2
.
Provided that the information herein is subject to change
,
only revised pages shall be reissued
.
3
.
When the product described herein includes Regulated Products subject The Wassenaar Arrangement
etc
,
they may not be exported without authorization form the appropriate governmental authorities
.
4
.
The contents of this specification including all figures and illustrations are proprietary information
( copyright or know-how ) of Seiko Instruments Inc. It is strictly prohibited to copy all or part of these
specifications to third parties without permission.
5
.
In the case that the products described herein are used as part of any devices or equipment which might
influence any one of the human body, human life and property, such as physical exercise equipment,
medical equipment or vehicles, please let us know that.
Seiko Instruments Inc.
Quartz Crystal Division
1-8, Nakase, Mihamaku, Chiba shi,
Chiba 261-8507 Japan
Sales Section
Specifications No.
Dept. of Issue Dept. of Control
Quality Assurance Section
Delivery Specifications
Receipt Column Note

1/11
DeliverySpecifications
１．Scope
ThesespecificationsapplytoQUARTZCRYSTALRESONATORS(hereinafter
referredtoasRESONATORS)tobemanufacturedbySeikoInstrumentsInc.
(hereinafterreferredtoasSII )to
２．Designation
RESONATORSaredesignated"SC-20S"( 32.768kHz ).
３．Shapeanddimensions
AspertheSC-20Sdrawingshownonpage5.
４．Electricalcharacteristics
Specifiedonpage2through3.
５．Shipmentandpackaging
5.1(3,000)pcsarethestandardlotsizetowhichthelotnumbershallbeallotted
5.2Thepackagingshallconformtotheresonatorpackagingstandards.
６．Outgoinginspection
6.1Whenmutuallyagreed,theoutgoinginspectionshallbeconductedasper
6.2Theoutgoinginspectionslipisnotbasicallyaffixedtoeachpackaging.
７．Warranty
IntheeventthatanydefectiveRESONATORSordefectivelotisfoundat
incominginspectionatandthat
anydefectresultingfromfailuresinprocess-controlatSIIafterincoming
inspectionisfound,goodRESONATORSshallbesuppliedto
freeofchargeasareplacement.
IntheeventthatanytroubleorproblemsrisingdirectlyfromRESONATORS
o
ccurs,itwillbeamicablysettledbetweenbothparties,providedthat
warrantyshallbedonewithinthescoreofreplacementofgoodRESONATORS.
８．Amendmentorabolitionofthespecifications
A
mendmentorabolitionofthespecificationsshallbemadeuponmutualconsent
betweenandSII.Ifanyproblemarises,
itshallbeamicablysettledbetweenbothparties.
９.Effectivenessofthespecifications
Thesespecificationsareeffectiveafterreceiptofreturnedcopieswithyour
approvedsign.
10．Others
ThisproductiscompletelyPb-freeandHalogen-free.
thestandardonpage4.

2/11
［1］ Themaximumrating
Item Symbol Rating
1 Storagetemperaturerange Tstg -55〜+125℃
2 Maximumdrivelevel DLmax. 0.5μWmax.
［2］ RecommendedOperatingCondition
Item Symbol Rating
1 Operatingtemperaturerange Tuse -40〜+85℃
2 Drivelevel DL 0.1μWtyp.
［3］ Electrical-Characteristics Measurementtemperature:25±2℃
Item Symbol Specifications
1 Nominalfrequency fnom 32.768kHz
2 Frequencytolerance ftol ±20×10-6
3 Loadcapacitance CL12.5pF
4 Motionalresistance R190kΩmax. MeasuredwithATI4192A
Impedanceanalyzer
OSCLEVEL=0.1V
5 Motionalcapacitance C16fFtyp.
6 Shuntcapacitance C01.3pFtyp. MeasuredwithATI4192A
Impedanceanalyzer
OSCLEVEL=0.1V
7 Turnovertemperature Ti 25±5℃ Measurethiscoefficientat3points
of10℃、25℃、40℃using
8 Paraboliccoefficient B (-3±1)×10-8/℃2C-MOScircuit
9 Frequencyaging fage ±3×10-6/year 25±3℃
、
Firstyear
10 Insulationresistance IR 500MΩ min. MeasuredwithATI4329A
InsulationResistanceMeter
ApplyDC100V
Conditions
Note
Note

3/11
［
4
］
EnvironmentandMechanicalcharacteristics
Item Specifications Conditions
1 Hightemperaturestorage1 Δf/f0=±10×10-6 Afterstorageunder85℃for1000hours, *1
measureatroomtemperature. *3
Hightemperaturestorage2 Δf/f0=±15×10-6 Afterstorageunder125℃for1000hours, *1
measureatroomtemperature. *3
2 Lowtemperaturestorage Δf/f0=±10×10-6 Afterstorageunder-55℃for1000hours, *1
measureatroomtemperature. *3
3 Hightemperatureand Δf/f0=±10×10-6 Afterstorageunder+85±2℃, *1
highhumiditystorage 85％RHfor1000h,measureatroom *3
temperature.
4 Thermalshockresistance Δf/f0=±10×10-6 Measureatroomtemperatureafter *1
100cycles. *3
-55℃⇔+125℃for30minutes.
5 Mechanicalshock Δf/f0=±10×10-6 *2
resistance
6 Vibrationresistance Δf/f0=±10×10-6 Amplitude1.5mmand10〜500Hzwith *2
cycletime15minutesin3direction
(X,Y,andZaxis)eachfor2h.
7 IRReflow Δf/f0=±10×10-6 Measureafter2timereflowunder *1
reflowprofilespecifiedinpage10
8 Shearstrength Nopeeling-off Pressuringforce10N×10±1sec. *2
 accordingtoIEC60068-2-21
9 Peelstrength Nopeeling-off Pressuringforce10N×10±1sec. *2
 accordingtoIEC60068-2-21
10 Bendingtest Nopeeling-off Bending:3mm×5±1sec. *2
 Thicknessofthetestingboard:1mm
Note:
1.Eachtestshallbedoneindependently.(notinseriestests)
2.*1:Measureafter24hoursleftatroomtemperature.
3.*2:Measureafter2hoursleftatroomtemperature.
4.*3:Preconditions
(1)IRReflow:2times
(2)Initialvaluesshallbemeasuredafter24hoursatroomtemperature.
5.Shiftinseriesresistanceaftertheabovetestsshallbelessthan±20%orlessthan±15kΩ.
IncaseofresistancetoIRreflow,shiftinseriesresistanceaftertheabovetestsshallbelessthan
±30%or±20kΩ.
Incaseofresistancetohightemperaturestorage(±125℃for1000hours）,shiftinseriesresistance
aftertheabovetestsshallbelessthan±40%or±30kΩ.
Measureafter100g-dummy(SIIStandard)
dropfrom1500mmheightontheconcrete
3directions10times.

4/11
［5］ Precautions
(1) Recommendedmountingconditions
Reflowprofile Asperreflowprofileshowninpage10.
Manualsoldering 350℃max.for4sec.Max.
(2) Cleaning
Thecrystalresonatormaybedestroyedbyultrasoniccleaning.
Wedon'tguaranteethequalityoftheproductwiththatcleaningmethodbecause
suchconditionsastypeofthewashingmachine,power,time,positioninthebath,
etc.cannotbespecified.
Pleaseconfirmultrasoniccleaningisnotgivinganydamagetotheproduct
beforeusewhenthatcleaningmethodmustbeused.
［6］Outgoinginspectionstandard
・Theoutgoinginspectionshallbeconductedasperthefollowingstandard.
・ThesamplingshallbeperformedaccordingtotheANSI/ASQCZ1.4-1996.
NO Item AQL(%)
1 Frequencytolerance 1.0
2 Equivalentseriesresistance 1.0
3 Outerappearance 1.5
4 Otherscharacteristics
P
eriodicalqualityinspection
Samplinglevel
Ⅰ
Ⅰ
Ⅰ

5/11
［7］Dimensionsandmarkinglayout
1. OutLineDrawing
Unit=mm
2. Marking 3. LeadConnection
*1 Specification
*2 CL(7pF：B、9pF：Ｊ、12.5pF：F）
*3 YearofProduction(Lastdigitofyear)
*4,5 WeekofProduction(01〜52)


4. RecommendedPADlay-out
Unit=mm
Materials ：
Case：Aluminaceramics、Ni-plated、Au-plated
Lead ：Kovarmaterial、Ni-plated
＃2
＃1
1.4
＃1 ＃2
0
.7
0
.8
0
.7
#
1
#
2
S * * * *
2.05±0.1
1.2±0.1 0.60±MAX
1.0Typ.
2
-
Ｃ
0
.
15
S □ □ □ □
*1 *2 *3 *4 *5

6/11
［8］Tapingspecification
１．Drawingoftapedimensions
① Carriertape  :Refertopage8.
② Tapingｒeel :Refertopage9.
２．Material
①
Carriertape:
PCblackconductive
② Tapingreel: PSconductive
３．Tapingmethod
（1） Tapingshallbeplacedintapesinsuchmannerastoassure
thatmarkingofthecomponentsisvisibleasperFig.1
Userdirectionoffeed
Fig.1
（2） Reel
①Onthesideofreelthereshallbemorethan40blocksof"Nocomponents".
②ThebeginningofCarrierTapeshallbebentverticallyandhookedon
grooveofreel.
（3） Leader
①Onthesideofleader,thereshallbemorethan40blocksof"Nocomponents"
②ThelengthofLeadershallbeover400mm.
③TheLengthofStickTapeforCoverTapeshallbeabout100mmand
StickTapeshallneverbedetached.
Fig.2
Userdirectionoffeed
空部
リール側
StickTape
CarrierTape CoverTape
製品装着部 ﾘｰﾀﾞｰ部
空部
No
Components 製品装着部
空部
製品装着部 Leader
空部
Components No
marking
marking
marking

7/11
（4） GapbetweenCarrierTapeandCoverTape
①CoverTapeprotrudesfromCarrierTapeby0.5mmmax.
Fig.3
②HolesofCarrierTapearecoveredwithCoverTapeby0.75mmmax.
Fig.4
（5） Peelstrength
①Themethodoftestingisdoneasshownbelow.
②Thevalueofforceisatthebeginningofdesealing.
③TheCoverTapepeelforthshallbe0.1〜1.3Natapeelspeedof300±10mm/min.
Fig.5
DirectionofPulling
D
irectionofMoving
0.5mmmax.
カバーテープ
0.75mm
CarrierTape
CoverTape
CarrierTape
CoverTape
0.75mm
165〜180°
CoverTape
CarrierTape

8/11
Carriertape
(1) ConformswithEIA-481
(2)Tolerance: ±0.2
 Unit=mm

9/11
Tapingreel
(1)ConformswithEIAJET-7200B
(2)Quantityperreel: 3,000pcs./forareel
Item Specification Unit
Materials PS(antistatics） -
insidereelwise W1 9.0+1.0/-0 mm
outsidereelwise W2 11.4±1.0 mm Unit=mm
Torrance：±０．２mm
11.4
9