Panasonic A35US Bedienungsanleitung

ACCTF14E-3

2015.09 industrial.panasonic.com/ac/e/

A35US

Narrow-pitch Connectors onnector

Operation manual

Operation manual for Narrow-pitch connectors A35US

Panasonic Corporation

industrial.panasonic.com/ac/e/ ©Panasonic Corporation 2015

CCTF14E-3 201509

-1-

Contents

01.Introduction ............................................................................................. 2

02.Precautions for product design ............................................................... 3

03.Precautions for mounting and reflow soldering ..................................... 15

04.Precautions for mating and unmating ................................................... 25

Points which particularly need to be confirmed before designing products

are bold and underlined.

Operation manual for Narrow-pitch connectors A35US

Panasonic Corporation

industrial.panasonic.com/ac/e/ ©Panasonic Corporation 2015

CCTF14E-3 201509

-2-

01. Introduction

Our Advanced series A35US consists of ultra-small connectors with a terminal pitch of

0.35 mm, a stacking height of 0.6mm, and a shorthand width of 2.2 mm. This connector

is designed for board-to-FPC connections that require a more space-saving connector

than our A35S Series.

For this purpose, the size and thickness of the molded part has been further reduced.

Select the types best suited to the conditions of use. Read this document before

designing a product and starting production.

A35US A35S

Space-

saving

Excellent

Width:

2.2mm

Very good

Width:

2.5mm

Low

profaile

Excellent

Mated height

0.6mm

Very good

Mated height

0.8mm

Wiring

underneath

Good

Exposed metal

part on the

rear face

Exposed

metal part

Good

Exposed metal

part on the

rear face

Exposed

metal part

Contact

reliability Excellent Excellent

Drop

resistance Very good

Bellows-type

contact

With a thin plastic part

Very good

Bellows-type

contact

With a thin plastic part

Mountability Excellent

Header needs

special nozzle

Very good

Header needs

special nozzle

Clicking

feedback Excellent Excellent

2.2mm 2.5mm

0.6mm 0.8mm

Header

pickup

apace:

0.8mm-

wide

ottom

Header

pickup

apace:

0.7mm-

wide

ottom

Operation manual for Narrow-pitch connectors A35US

Panasonic Corporation

industrial.panasonic.com/ac/e/ ©Panasonic Corporation 2015

CCTF14E-3 201509

-3-

02. Precautions for product design

02-1. Considerations in mechanical design

1) Position of the connector on a board

Rigid boards tend to warp in a direction perpendicular to the rolling direction

during the production process. Poor soldering may occur depending on the

warping direction. Make sure to place the connector in a direction which reduces

warpage.

2) Position of the connector in the mounting process

Design multi-pin connector layouts that do not require a swinging movement

during pickup and mounting.

In many cases, deviation of the connector mounting position is caused by the

inertia of the swinging movement of the mounter. A layout that does not require

swinging is thus required.

●Example of a connector layout requiring a swinging movement in the mounting process

This space causes poor

soldering.

Pickup and mounting positions

Connector

Tends to warp in the

manufacturing (lateral) direction.

Embossed tape

Motherboard

No rotation inertia

Poor soldering can be reduced by

designing a mounting pattern to place

the connector in a lateral direction.

Connector

Rotary inertia is applied

Operation manual for Narrow-pitch connectors A35US

Panasonic Corporation

industrial.panasonic.com/ac/e/ ©Panasonic Corporation 2015

CCTF14E-3 201509

-4-

3) Prevention of problems during use

(1)The connectors have a simple locking structure, but make sure to consider

preventive measures against the detachment of mated connectors during

practical use.

- Make sure to eliminate any gaps between the casing and board.

- We recommend that the holding force is set greater than the insertion force of

the connector.

- Select an appropriate cushioning material with a suitable shape and dimensions,

and hold down the connector at the center. (If the holding position is off the

center, it may cause detachment of mated connectors.)

(2)If the board is insufficiently fixed as in the following drawing, the inertial

load applied to the connector may damage it. Pay attention to the following

points.

Cushioning material

Casing

Sub-

oar

(

flexible board

)

Connector

Reinforcing plate

Motherboar

When an impact such as dropping as shown in the

drawing is applied:

(1) If both boards are not sufficiently fixed,

the connector will be damaged due to the

impact applied to the connector.

(2) In particular, if there is no gap between

the casing and sub-board (A<B), the sub-

board side will hit the casing wall first.

This impact may damage the connector.

Securely fix both the motherboard and sub-board.

(1) Fixing motherboard

(Prevents inertial movement by drop impact

by fixing the side with a greater mass.)

(2) Hold down the sub-board to prevent it from

moving using a rubber cushioning material,

etc.

(3) It is safer if board gaps are set to AB so as

to prevent shearing damage on deviation of

the board by impact.

× A<B

○ AB

Sub-

oar

(

FPC

)

Connector

Casing

Motherboar

(

not fixed

)

Connector

Casing

Motherboar

(

not fixed

)

Holdin

cushion

Sub-

oard

(

FPC

)

Operation manual for Narrow-pitch connectors A35US

Panasonic Corporation

industrial.panasonic.com/ac/e/ ©Panasonic Corporation 2015

CCTF14E-3 201509

-5-

(3)To facilitate the mating of connectors, we recommend that you pay attention

to the following points when designing the motherboard.

- Provide a reference mark.

- Design a layout that allows easy-checking of the connector mating condition.

Examples of reference mark

Flexible board

Reinforcing plate

Motherboard

Provide a reference

mark:

-Silk printing

-Pattern (co

er foil)

Operation manual for Narrow-pitch connectors A35US

Panasonic Corporation

industrial.panasonic.com/ac/e/ ©Panasonic Corporation 2015

CCTF14E-3 201509

-6-

02-2. Precautions for board design

1) Circuit design

(1)When designing the terminal foot pattern, check the latest specifications and

examine the recommended foot pattern and dimensions of the metal mask opening.

The current recommendations are indicated on pages 13 and 14.

(2)This connector is provided with soldering metals for preventing solder from

peeling off the terminal.

Make sure to design a foot pattern for the holding metal.

(3)Pay attention to the following points when providing a through hole by

extending the foot pattern.

If a through-hole is created simply by extending the foot pattern by the same

width, solder is absorbed into the through-hole during the reflow process, which

may cause defective or poor soldering of the terminals.

①Thin and extend the tip of the foot

pattern before creating a through-hole.

②Prevent solder from reaching the land

by using a coverlay or resist.

Soldering terminal

Socket Header

In general, 1/3 the

terminal pattern

width.

Good

Operation manual for Narrow-pitch connectors A35US

Panasonic Corporation

industrial.panasonic.com/ac/e/ ©Panasonic Corporation 2015

CCTF14E-3 201509

-7-

(4)Pay attention to the following point as a pattern

peeling preventive measure when removing the

connector.

- Make the foot pattern length longer than the

coverlay opening.

In general, at least 0.3 mm.

(5)Foot pattern dimensions indicated in the drawings are

intended to achieve the minimum area on the premise

that the reflow-soldering process is used. For manual

soldering or for ensuring solder reworkability, make

a longer pattern at the terminal tip.

(6)When it is needed to provide pattern wiring and through-hole underneath the

socket, it is possible to use it by designing the pattern as shown below in case

insulation underneath the socket is not assured.

- Secure space for applying the soldering

iron tip.

Terminal looseness and unwanted

solder creep are preventable by

applying the soldering iron tip here.

Example of through hole

The area where there is a possibility

that the contacts touch.

Operation manual for Narrow-pitch connectors A35US

Panasonic Corporation

industrial.panasonic.com/ac/e/ ©Panasonic Corporation 2015

CCTF14E-3 201509

-8-

(7)Resist between pins

When it is needed to provide resist between the pins, there is a way to adopt the

overresist method as below.

（If the resist is out of alignment, the pattern width 0.20mm would not change.)

Copper foil

Overresis

Resis

Operation manual for Narrow-pitch connectors A35US

Panasonic Corporation

industrial.panasonic.com/ac/e/ ©Panasonic Corporation 2015

CCTF14E-3 201509

-9-

2) FPC board design

(1)Positions of connectors on the FPC

The FPC board is made by laminating a polyimide layer, copper foil, and adhesive

layers. Since each material has slightly different heat-shrinkable properties,

warpage may occur typically due the reflow heat in the following cases. This may

cause poor soldering. Make sure to arrange the board in a direction that minimizes

warpage.

■Example of the Assist carrier (ShinEtsu Polymer)

In case of a one-sided FPC board, warpage is

more likely to occur if a pattern is laid in a line,

or if the copper foil is applied over the entire

FPC board for noise-

revention

oses.

Since the FPC is soft, it is

difficult to kee

flat.

●Typical transfer jigs for the board

mounting process

- Magic resin (Daisho Denshi)

- Keiju board (Mitsubishi Resin)

- Assist carrier (ShinEtsu Polymer)

To keep the FPC board flat during

mounting, we recommend the use of a

“Sticky transfer jig” for the wiring board

mounting process.

Workpiece

(FPC board, etc.)

Elastomer

(

Weak adhesive la

)

Elastomer

(

Stron

adhesive la

)

Substrate

Workpiece (FPC, etc.)

Assist carrier

out pin STEP 1:

Provisional fixing of workpiece

STEP 2:

Mountin

com

lete

STEP 3:

Removal of

work

iece

Removal pin

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