Panasonic A35UH Bedienungsanleitung

ACCTF32E

2017.04 industrial.panasonic.com/ac/e/

A35U

Stacking

Connectors for high current

Operation manual

Operation manual for Narrow-pitch connectors A35UH

Panasonic Corporation

industrial.panasonic.com/ac/e/

©Panasonic Corporation 2017 ACCTF32E 201704

- 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 A35UH

Panasonic Corporation

industrial.panasonic.com/ac/e/

©Panasonic Corporation 2017 ACCTF32E 201704

- 2 -

01. Introduction

Our Advanced series A35UH 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 and high

current 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.

A35UH 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

High

current

Excellent

With

power terminal

(Max 10A at total)

Good

power terminal

(Max 4A at total)

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

bottom

Header

pickup

apace:

0.7mm-

wide

bottom

Signal terminal

0.3A/Pin

Signal terminal

0.25A/Pin

Power terminal

5A in two location

Operation manual for Narrow-pitch connectors A35UH

Panasonic Corporation

industrial.panasonic.com/ac/e/

©Panasonic Corporation 2017 ACCTF32E 201704

- 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 A35UH

Panasonic Corporation

industrial.panasonic.com/ac/e/

©Panasonic Corporation 2017 ACCTF32E 201704

- 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-board

(flexible board)

Connector

Reinforcing plate

Motherboard

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

○

≥

Sub-board

(FPC)

Connector

Casing

Motherboard

(not fixed)

Connector

Casing

Motherboard

(not fixed)

Holding cushion

Sub-board (FPC)

Operation manual for Narrow-pitch connectors A35UH

Panasonic Corporation

industrial.panasonic.com/ac/e/

©Panasonic Corporation 2017 ACCTF32E 201704

- 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 (copper foil)

Operation manual for Narrow-pitch connectors A35UH

Panasonic Corporation

industrial.panasonic.com/ac/e/

©Panasonic Corporation 2017 ACCTF32E 201704

- 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 power terminal for high current.

When designing, in order to prevent an excessive temperature rise, make sure to

design a foot pattern for the power terminal.

(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.

Power terminal

Socket

Header

In general, 1/3 the

terminal pattern

width.

Good

Operation manual for Narrow-pitch connectors A35UH

Panasonic Corporation

industrial.panasonic.com/ac/e/

©Panasonic Corporation 2017 ACCTF32E 201704

- 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 A35UH

Panasonic Corporation

industrial.panasonic.com/ac/e/

©Panasonic Corporation 2017 ACCTF32E 201704

- 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

Overresist

Resist

Operation manual for Narrow-pitch connectors A35UH

Panasonic Corporation

industrial.panasonic.com/ac/e/

©Panasonic Corporation 2017 ACCTF32E 201704

- 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-prevention purposes.

Since the FPC is soft, it is

difficult to keep it 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 layer)

Elastomer

(Strong adhesive layer)

Substrate

Workpiece (FPC, etc.)

Assist carrier

Layout pin

STEP 1:

Provisional fixing of workpiece

STEP 2:

Mounting complete

STEP 3:

Removal of

workpiece

Removal pin

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