IO4-168P datasheet(33/44 Pages) AMPHENOL

33 / 44 page

Low Mating Force Connector Installation

LOCKING SCREW ACCESSORY INSERTED INTO

IO CONNECTOR BODY

PC CONNECTOR, CONT.

The mounting surface to which the connector is applied

should not extend forward of the shoulder of the PC

connector. If the mounting surface does extend beyond

the shoulder, a shim (minimum 0.005 inch thick) must be

inserted between the connector body and the mounting

surface. (Refer to Figure 8). After soldering, mounting

screws should be properly torqued.

Fixturing of the PC connector and mounting surface may

be desirable to assure straightness after wave soldering.

INPUT/OUTPUT CONNECTOR

Use of mating hardware, such as locking screws, is recommended

with

I/O connectors. See photo at right. Locking screw accessory, two

per connector, may be inserted into the large holes at each end of the

back of an

connector body. Part number to order locking screw

accessory is 10-411196-4. By hand, press the locking screw firmly

down into the cavity until it reaches a positive stop. The locking screw

is then captivated in the retention system of the cavity. The front of

the locking screw has a 4-40 UNC-2A thread which will mate with the

locking bushing accessories of MB or PC connectors. (Refer to Figure

9 for I/O locking screw dimensions).

Should it be necessary to remove the captivated locking screw

accessory, push the screw as far forward as possible. Using vise grip

pliers to grasp the threaded end and pliers to hold the knurled end,

apply torque until the locking screw breaks in two. Each half will then

drop out.

Alternate Mounting Variation for Input/Output Connectors

For fixed mounting, a 6-32 thread forming screw, type AB (MS5186)

may be inserted through the mounting member and into the holes at

each end of the connector body from the back. The screws must be

used with suitable washers and must be of sufficient length to

penetrate the connector body 0.350 inch. Care must be taken not to

over-tighten the screws.

FIGURE 8: PC CONNECTOR MOUNTING

FIGURE 9: I/O LOCKING SCREW DIMENSIONS

Visual observation of the mating of the MB connector to the I/O

connector or the PC connector to the I/O connector is recommend-

ed. The fully mated condition occurs when the

I/O connector skirt

bottoms on the MB or PC shoulder along the full length. (Refer to

Figure 10).

INPUT/OUTPUT

CONNECTOR

MATING

CONNECTOR

LOCKING SCREW

(2 PER CONNECTOR)

MAX. 0.650 INCH

WHEN FULLY

ASSEMBLED TO

MATING

CONNECTOR

Printed circuit boards containing PC connectors that

are mating with

I/O connectors should utilize a

holding device that is capable of locking the board

in place to prevent back-off during use.

FIGURE 10: MB CONNECTOR & I/O CONNECTOR

FULLY MATED CONDITION

MOTHER

BOARD

CONNECTOR

FULLY MATED

INPUT/

OUTPUT

CONNECTOR

CIRCUIT

BOARD

CIRCUIT BOARD

USE A

0.005 INCH

SHIM OR

WASHER

IF MOUNTING

SURFACE EXTENDS

BEYOND SHOULDER OF

CONNECTOR

CIRCUIT BOARD

CONNECTOR

SHOULDER

CONNECTOR

SHOULDER

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