IPC-TM-650 EN 2022 试验方法.pdf - 第782页

1.0 Scope 1.1 To determine the effects of subjecting connectors to mating and unmating cycles simulating the expected life. 2.0 Reference Documents 2.1 Information in this section is intended to parallel the test method …

1.0 Scope

1.1

To determine the mechanical strength of the crimped

contact-to-conductor joint.

2.0 Reference Documents

2.1

Information in this section is intended to parallel the test

method described in EIA-RS-364/TP-08.

3.0 Test Specimen

3.1

A contact and conductor crimped together with the

specified tool.

NOTE:

A contact may be crimped to both ends of the con-

ductor to facilitate fixturing.

4.0 Apparatus

4.1

Clamps, jaws, or other means to hold the contact and

conductor.

4.2 A force measuring device capable of measuring the

specified forces at a rate of travel of 1 ± 1/4 inch per minute.

5.0 Procedure

5.1

The sample shall be mounted in the tensile tester and an

axial force sufficient to rupture the contact-to-conductor crimp

shall be applied. The peak force required to separate the con-

tact from the conductor shall be recorded and shall not be

less than the minimum specified crimp tensile strength as

defined in the individual contact or connector specification for

the particular wire size under test.

5.2 The tested sample shall be visually examined for distor-

tion of the crimp barrel or area to the extent that it is unfit for

further use. The condition of crimp failure shall be noted as

one of the following:

1. Slip (pull-out)

2. Conductor broken within crimp area or immediately adja-

cent to the crimp area (including any strain relief).

6.0 Notes

6.1

Acceptance criteria shall be established as the minimum

acceptable mechanical strength of the crimped connection as

defined by the individual contact or connector specification.

2215 Sanders Road

Northbrook, IL 60062-6135

IPC-TM-650

TEST METHODS MANUAL

Number

3.3

Subject

Crimp Tensil Strength, Connectors

Date

7/75

Revision

Originating Task Group

N/A

Material in this Test Methods Manual was voluntarily established by Technical Committees of the IPC. This material is advisory only

and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this

material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.

Equipment referenced is for the convenience of the user and does not imply endorsement by the IPC.

Page1of1

ASSOCIATION CONNECTING

ELECTRONICS INDUSTRIES

1.0 Scope

1.1

To determine the effects of subjecting connectors to

mating and unmating cycles simulating the expected life.

2.0 Reference Documents

2.1

Information in this section is intended to parallel the test

method described in EIA-RS-364/TP-09.

3.0 Test Specimen

3.1

One piece connector

3.1.1 A connector (plug and receptacle) complete with all

applicable guide, keying and engaging hardware or a card

edge receptacle.

3.2 Two piece connector

3.2.1 A connector (header and receptacle or plug and

receptacle) complete with all applicable guide, keying and

engaging hardware and appropriate flat cable.

3.3 Unless otherwise specified in the individual connector

specification, the test samples (or engaging hardware) shall

not be lubricated or otherwise coated prior to test.

4.0 Apparatus

4.1

One piece connector.

4.1.1 Test blade as shown in Figure 1 to simulate a mating

printed wiring board of maximum thickness for card edge (one

piece) connector.

4.2 Two piece connector.

4.2.1 The mating connector shall be used to test for dura-

bility of two piece connectors.

4.3 Clamps, jaws, or other means to hold the receptacle

and plug or test blade.

4.4 Automatic or semi-automatic tester to mate and unmate

the connector at the specified rate.

NOTE:

While manual cycling of the connectors is permitted,

proper alignment and orientation is most readily maintained in

a mechanical device specifically designed for this test.

5.0 Procedure

5.1

The sample shall be mounted in the tester, carefully

aligned and fully mated and unmated for the number of cycles

specified in the individual connector specification.

5.2 Unless otherwise specified in the individual connector

specification, the cycling rate shall be 200 to 600 cycles per

hour and no electrical load shall be applied to the samples

during the test.

5.3 At the intervals specified in the individual connector

specification, inspections or tests may be performed.

5.4 After completion of the specified number of cycles, the

sample shall be visually examined for evidence of the follow-

ing which may be excessive or detrimental to the function of

the connector.

A. Wear on engaging hardware.

B. Uneven wear, galling, or removal of plating on contacts,

guide hardware, etc.

C. Free metal chips in the contact area.

D. Displaced, bent, or broken contacts.

E. Pierced resilient inserts or broken or chipped hard dielec-

trics.

6.0 Notes

6.1

Acceptance criteria shall be established in terms of one,

or any combination of the following: (See 5.3)

A. The maximum allowable total mating force during the test.

B. The minimum individual contact separation force during or

after the test.

C. The maximum allowable change in contact resistance

after the test.

D. The degree and criticality of wear and/or component dam-

age resulting from the test.

2215 Sanders Road

Northbrook, IL 60062-6135

IPC-TM-650

TEST METHODS MANUAL

Number

3.4

Subject

Durability, Connectors

Date

1/83

Revision

Originating Task Group

N/A

Material in this Test Methods Manual was voluntarily established by Technical Committees of the IPC. This material is advisory only

and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this

material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.

Equipment referenced is for the convenience of the user and does not imply endorsement by the IPC.

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ASSOCIATION CONNECTING

ELECTRONICS INDUSTRIES

Figure 1 One Piece Edge Connector Mechanical Gages

IPC-TM-650

Number

3.4

Subject

Durability, Connectors

Date

1/83

Revision

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