HRS DF40 Series User manual

TITLE:
DF40 Series Guideline
ETAD-H1015-00
HIROSE ELECTRIC CO.,LTD.
PRODUCT:
BOARD TO BOARD/FPC CONNECTOR,
Pitch: 0.4mm, Width: 3.38mm,
Stacking height: 1.5-4.0mm
PAGE: 1OF 18
Copyright© 2007 Hirose Electric Co., Ltd.All rights reserved.
DF40 Series Guideline
ETAD-H1015-00
Approver
WR.FUKUCHI
20210331
Checker
TS.MIYAZAKI
20210330
Designer
PAN YIWEI
20210330
REVISIONS
DIS-H-00010192
RevNo
1
Designer
Checker
Approver
DATE
YK.SATAKE
TS.MIYAZAKI
WR.FUKUCHI
20210713
Oct.1.2021Copyright2021HIROSEELECTRICCO.,LTD.AllRightsReserved.

TITLE:
DF40 Series Guideline
ETAD-H1015-00
HIROSE ELECTRIC CO.,LTD.
PRODUCT:
BOARD TO BOARD/FPC CONNECTOR,
Pitch: 0.4mm, Width: 3.38mm,
Stacking height: 1.5-4.0mm
PAGE: 2OF 18
Copyright© 2007 Hirose Electric Co., Ltd.All rights reserved.
TABLE OF CONTENTS
PAGE NUMBER
1Design requirements ........................................................................................................................................3
1.1 Mechanical requirements ..............................................................................................................................3
1.1.1 FPC mounting ...................................................................................................................................3
1.1.2 Unexpected disengaging prevention................................................................................................3
1.1.3 FPC fixing..........................................................................................................................................4
1.1.4 When using two sets connectors ......................................................................................................5
1.1.5 Allocation of other components around the connector ...................................................................6
1.1.6 FPC alignment marking for mating ................................................................................................6
1.1.7 Precautions for PWB to PWB connection........................................................................................6
1.1.8 Selection of connector mounting machine and notice for mounting..............................................6
1.2 PWB requirements.........................................................................................................................................7
1.2.1 Recommended PWB pattern...................................................................................................................7
1.2.2 PWB pad layout and connector location ................................................................................................8
1.2.3 PWB designing.........................................................................................................................................8
1.2.4 FPC designing..........................................................................................................................................8
2Mounting requirements....................................................................................................................................9
2.1 Metal mask design .........................................................................................................................................9
2.2 Fillet forming................................................................................................................................................10
2.3 Reflow profile................................................................................................................................................11
2.4 Repairing (hand soldering)..........................................................................................................................12
3Connector handling requirements.................................................................................................................13
3.1 Connector mating operation........................................................................................................................13
3.2 Connector unmating operation....................................................................................................................14
4PWB and solder paste applied for evaluation test .......................................................................................16
4.1 PWB applied for evaluation test .................................................................................................................16
4.2 Solder paste applied for evaluation test .....................................................................................................17
5Additional information ...................................................................................................................................18
5.1 PWB cleaning ...............................................................................................................................................18
5.2 PWB handling...............................................................................................................................................18
5.3 Connector storage.........................................................................................................................................18
5.4 Connector continuity test ............................................................................................................................18
Oct.1.2021Copyright2021HIROSEELECTRICCO.,LTD.AllRightsReserved.

TITLE:
DF40 Series Guideline
ETAD-H1015-00
HIROSE ELECTRIC CO.,LTD.
PRODUCT:
BOARD TO BOARD/FPC CONNECTOR,
Pitch: 0.4mm, Width: 3.38mm,
Stacking height: 1.5-4.0mm
PAGE: 3OF 18
Copyright© 2007 Hirose Electric Co., Ltd.All rights reserved.
1 Design requirements
1.1 Mechanical requirements
1.1.1 FPC mounting
Attachment of a stiffener larger than the connector outline is recommended to the reverse face of the
connector mounted area. Solder crack and contact looseness could occur due to the possible
mechanical stress applied to contacts during un-mating process when this product is mounted onto
low-rigidity or thin FPC. Under the circumstances, mount plug connector of which retention force is
higher than the other to the FPC. 0.3 mm or thicker glass epoxy stiffener (up to 50 pin), and 0.5mm or
thicker glass epoxy stiffener (over 60 pin) is recommended.
1.1.2 Unexpected disengaging prevention
Connector could be disengaged if momentary impact, caused by dropping etc., is applied to the
connectors in use. In order to prevent connectors from disengaging, make sure to place a buffer
material such as sponge to press down the connectors in mating direction.
Oct.1.2021Copyright2021HIROSEELECTRICCO.,LTD.AllRightsReserved.

TITLE:
DF40 Series Guideline
ETAD-H1015-00
HIROSE ELECTRIC CO.,LTD.
PRODUCT:
BOARD TO BOARD/FPC CONNECTOR,
Pitch: 0.4mm, Width: 3.38mm,
Stacking height: 1.5-4.0mm
PAGE: 4OF 18
Copyright© 2007 Hirose Electric Co., Ltd.All rights reserved.
1.1.3 FPC fixing
For FPC alignment by guide posts, do not disturb FPC flexibility. Design without flexibility of FPC
could apply direct stress to the connector by drop impact etc.
EX) Inflexible FPC positioning with guide posts on chassis as shown above disturbs flexibility to the
directions indicated by arrows.
Oct.1.2021Copyright2021HIROSEELECTRICCO.,LTD.AllRightsReserved.

TITLE:
DF40 Series Guideline
ETAD-H1015-00
HIROSE ELECTRIC CO.,LTD.
PRODUCT:
BOARD TO BOARD/FPC CONNECTOR,
Pitch: 0.4mm, Width: 3.38mm,
Stacking height: 1.5-4.0mm
PAGE: 5OF 18
Copyright© 2007 Hirose Electric Co., Ltd.All rights reserved.
1.1.4 When using two sets connectors
When using two sets of connectors on one board receptacle and plug, the following mounting
accuracy is required.
As mentioned above, very tight tolerances are required.
It is impossible to satisfy this tolerance in consideration of the board and mounting accuracy.
Therefore, please avoid the use of more than one set of connector receptacle and plug on single
board. When using two sets or more of connectors, please use the divided board for the one side.
Oct.1.2021Copyright2021HIROSEELECTRICCO.,LTD.AllRightsReserved.

TITLE:
DF40 Series Guideline
ETAD-H1015-00
HIROSE ELECTRIC CO.,LTD.
PRODUCT:
BOARD TO BOARD/FPC CONNECTOR,
Pitch: 0.4mm, Width: 3.38mm,
Stacking height: 1.5-4.0mm
PAGE: 6OF 18
Copyright© 2007 Hirose Electric Co., Ltd.All rights reserved.
1.1.5 Allocation of other components around the connector
Do not locate any other components which may affect on connector mating around the connectors.
1.1.6 FPC alignment marking for mating
Marking onto the opposite PWB from the FPC side for indicating the exact mating position is
recommended to support mating without misalignment during mating operation of FPC side to the
PWB side.
1.1.7 Precautions for PWB to PWB connection
In order to connect PWB to PWB, precision of necessary components and mounter or screw fitting is
required, and direct stress to the connector is avoidable.Avoid fixing PWBs with connecters only, and
stabilize them with other tools.
Keep connector warpage within 0.02 mm in connector longitudinal direction.
1.1.8 Selection of connector mounting machine and notice for mounting
Pay attention to the vacuum pick up area and position precision. For chucking pick and place, prior
confirmation is necessary to avoid connector deformation caused by excessive chucking force.
Confirmation prior to your manufacturing is necessary.
Not recommended
Recommended
Oct.1.2021Copyright2021HIROSEELECTRICCO.,LTD.AllRightsReserved.

TITLE:
DF40 Series Guideline
ETAD-H1015-00
HIROSE ELECTRIC CO.,LTD.
PRODUCT:
BOARD TO BOARD/FPC CONNECTOR,
Pitch: 0.4mm, Width: 3.38mm,
Stacking height: 1.5-4.0mm
PAGE: 7OF 18
Copyright© 2007 Hirose Electric Co., Ltd.All rights reserved.
1.2 PWB requirements
1.2.1 Recommended PWB pattern
Recommended PWB pad layout for receptacle (ex. 40 pos.)
Patterning of different signals is unacceptable on the area indicated by ““.
Recommended PWB pad layout for plug (ex. 40 pos.)
Y dimension
H=1.5, 2.0mm: 1.5mmMAX
H=2.5~4.0mm: 0.92mmMAX
Oct.1.2021Copyright2021HIROSEELECTRICCO.,LTD.AllRightsReserved.

TITLE:
DF40 Series Guideline
ETAD-H1015-00
HIROSE ELECTRIC CO.,LTD.
PRODUCT:
BOARD TO BOARD/FPC CONNECTOR,
Pitch: 0.4mm, Width: 3.38mm,
Stacking height: 1.5-4.0mm
PAGE: 8OF 18
Copyright© 2007 Hirose Electric Co., Ltd.All rights reserved.
1.2.2 PWB pad layout and connector location
Pad layout and connector position for receptacle
Pad layout and connector position for plug
1.2.3 PWB designing
Design PWB layout properly so that front, back and side fillets are formed.
By applying the recommended PWB layout, optimum retention force can be obtained between
connector and PWB.
Solder wicking and flux penetration could occur by applying different PWB layout from the
recommended. Please contact us for the different PWB pattern from the recommended PWB layout.
Although standoff is provided, interference to the connector body by pattern, via hole and solder
resist beneath the connector may cause solder defects and poor fillet formation.
1.2.4 FPC designing
Diversity of coefficient thermal expansion in FPC and stiffener materials may cause FPC warpage and
mounting failure. Confirmation prior to your manufacturing is necessary.
Oct.1.2021Copyright2021HIROSEELECTRICCO.,LTD.AllRightsReserved.

TITLE:
DF40 Series Guideline
ETAD-H1015-00
HIROSE ELECTRIC CO.,LTD.
PRODUCT:
BOARD TO BOARD/FPC CONNECTOR,
Pitch: 0.4mm, Width: 3.38mm,
Stacking height: 1.5-4.0mm
PAGE: 9OF 18
Copyright© 2007 Hirose Electric Co., Ltd.All rights reserved.
2 Mounting requirements
2.1 Metal mask design
Recommended metal mask dimensions for receptacle (ex. 40 pos.)
Recommended soldering paste amount: 0.0135 mm3 (Per 1 Pad)
Recommended metal mask dimensions for plug (ex. 40 pos.)
Recommended soldering paste amount: 0.0121 mm3 (Per 1Pad)
Recommended metal mask thickness and open ratio
Open ratio: 80 % (of the recommended PWB layout)
Metal mask thickness: 0.12 mm
NOTE: Solder paste amount beyond the recommendation may cause solder wicking and flux
penetration. Please contact us when the soldering condition needs to be different from the
recommended condition.
Oct.1.2021Copyright2021HIROSEELECTRICCO.,LTD.AllRightsReserved.

TITLE:
DF40 Series Guideline
ETAD-H1015-00
HIROSE ELECTRIC CO.,LTD.
PRODUCT:
BOARD TO BOARD/FPC CONNECTOR,
Pitch: 0.4mm, Width: 3.38mm,
Stacking height: 1.5-4.0mm
PAGE: 10 OF
18
Copyright© 2007 Hirose Electric Co., Ltd.All rights reserved.
2.2 Fillet forming
For the judgment of fillet forming quality, check side fillet forming as an indication.
Fillet forming on receptacle
Recommended condition is that fillet thickness is one third of contact thickness (0.13 mm) or more,
and solder is wetted completely.
Fillet forming on plug
Recommended condition is that fillet thickness is one third of contact thickness (0.13 mm) or more,
and solder is wetted completely.
Oct.1.2021Copyright2021HIROSEELECTRICCO.,LTD.AllRightsReserved.