IPC-TM-650 EN 2022 试验方法.pdf - 第3页

B ACKGROUND I NFORMATION The IPC formed in 1957 Because of a need for technical informa- tion, and to develop standards in the ﬁeld of printed wiring, the IPC was or ganized in 1957 by independent producers of PWBs and b…

BACKGROUND INFORMATION

The IPC formed in 1957

Because of a need for technical informa-

tion, and to develop standards in the ﬁeld

of printed wiring, the IPC was organized

in 1957 by independent producers of

PWBs and began as The Institute of

Printed Circuits.

The IPC continued to grow and expanded

into areas besides PWBs, thus making it

essential to include other aspects of the

industry. The IPC officially changed its

name in 1977 to The Institute for Inter-

connecting and Packaging Electronic

Circuits to reﬂect the range of products

associated with electronic interconnec-

tions.

The IPC has since further expanded its

horizons and has become involved with

ﬂat cable, ﬂexible circuits, connectors,

discrete wiring, hybrid circuits, and

assembly services.

Yet to this day, the IPC is a not-for-proﬁt

organization dedicated to the technologi-

cal advancement of the printed wiring

industry.

The programs of the IPC are made pos-

sible only through the active, voluntary

support of its membership. The member-

ship of the IPC is made up of representa-

tives of companies from a broad cross-

section of industry and qualiﬁed

technical experts from government agen-

cies, colleges, and universities. Member-

ship in the IPC is on a company basis,

with members being companies that pro-

duce printed wiring boards for sale or

internal use, or suppliers of material or

equipment used in the industry. As a

result of this broad cross-section, the

technical information and documents

published by the IPC reﬂect the consen-

sus of all segments of the industry.

The specific programs of the IPC

Following are the speciﬁc types of pro-

grams undertaken by the IPC:

1) Through the IPC, the industry devel-

ops and publishes standards and

speciﬁcations to establish common

terminology and promote optimum

application, minimize confusion, and

provide an intelligent path to

productivity.

2) The IPC sponsors seminars and tech-

nical workshops to enable all seg-

ments of the industry to study new

ideas in the technology.

3) The IPC, in its monthly member

magazine, the IPC Review, provides

the industry with news on the IPC

programs and technical standards.

4) The IPC provides a forum for coop-

erative technical research. An

example: A Round Robin to study

board solderability, in which members

would voluntarily submit or sample

test boards. The test results can then

be made available to the entire

industry.

5) The IPC publishes several manuals

and handbooks containing major tech-

nical documentation on key aspects of

our technology, including standards,

technical reports, and guidelines. All

manuals and handbooks are devel-

oped through the cooperative and vol-

untary efforts of the membership.

6) Through the exchange of ideas at

various sessions of our 150 different

committee, subcommittee, or task

groups, as well as by attending the

IPC semiannual meetings, where over

70 new technical papers are pre-

sented, you can better keep your ﬁn-

ger on the pulse of new developments

in the industry.

Because the IPC programs are under-

taken on a voluntary basis and shared by

all in the industry, member companies

have saved millions of dollars that would

have been required for each company to

duplicate that effort. This voluntary

exchange of technical information has

been an important factor in the high pro-

ductivity of the industry.

Purpose of the IPC

Test Methods Manual

The IPC Test Methods Manual, IPC-TM-

650, typiﬁes the objectives of the IPC.

The IPC-TM-650 provides useful infor-

mation to designers and users of printed

wiring boards to help with problems they

may encounter in the application of

printed wiring test methods.

The purpose of the IPC-TM-650 is to

keep you abreast on industry-approved

test techniques and procedures for chemi-

cal, mechanical, electrical, and environ-

mental tests on all forms of printed wir-

ing and connectors.

The IPC maintains a list of the individu-

als who have purchased a copy of the

IPC-TM-650. As new material is devel-

oped by our technical committees, all

IPC-TM-650 holders who remain part of

our updating service will be sent the

material for inclusion in their manual.

The scope of this manual is broad. Refer

to the Table of Contents, which speciﬁes

the material now included in the IPC-

TM-650. The IPC-TM-650 is a living

document in that the IPC, through the

input of various technical committees

and individual efforts of technical

experts, will continue to develop and

revise data so that the manual stays cur-

rent.

The IPC and the future

With the continued voluntary, coopera-

tive activity of the membership, it is

anticipated that, through the IPC, we can

undertake programs and activities which

will be of mutual beneﬁt to representa-

tives from both the printed wiring and

electronics industries. The IPC will pro-

vide a forum through which the objec-

tives of the industry can be attained with

the greatest efficiency and economy.

IPC-TM-650

THE INSTITUTE FOR INTERCONNECTING AND PACKAGING ELECTRONIC CIRCUITS

3000 LAKESIDE DRIVE,SUITE 309S•BANNOCKBURN, IL 60015 • TEL 847/615/7100 • FAX 847/615/7105

FORMALITY PROCEDURE OF AN

IPC-TM-650 TEST METHOD

An IPC test method is a concise way of providing a procedure by which the properties or constituents of a material,

an assembly of materials, or a product can be examined. It is not intended that these test procedures contain accept-

ability levels for performance. Speciﬁc acceptability criteria should be detailed in the individual performance speciﬁ-

cation.

An IPC test method is intended to provide a uniform system of testing that can be utilized by a variety of IPC, com-

mercial, and military performance speciﬁcations. It should therefore represent a consensus as to the best available test

procedure for the intended use. It should be supported by experience and adequate data obtained from cooperative

tests. It should be precise enough so that when a procedure is performed by an operator, the results will be found sat-

isfactory for judging the compliance of material with the speciﬁcation.

The IPC test methods are typically generated or revised by a performance speciﬁcation group, which needs a tool to

measure product performance. Since this generated or revised method will certainly affect other performance speciﬁ-

cations, special care must be taken to ensure that all affected performance speciﬁcation groups are involved at some

stage of the method’s writing or revision.

The IPC has empowered the Test Methods Subcommittee with the task of assuring that comprehensive, well detailed

test procedures are produced. This subcommittee has developed a format for test method generation, which must be

strictly followed. On the following pages is the format for developing a test method, as well as a ﬂow chart detailing

how test method generation should take place.

SECTION 1.0

SCOPE

The Scope section deﬁnes the purpose and gives an overall view of the test method. This section should be

written in summary fashion and include any limitations that might cause erroneous test results. It should also include

a general statement regarding any cautions, hazards, or warnings about the test method, referencing Section 6.0

NOTES for detailed information.

SECTION 2.0

APPLICABLE DOCUMENTS

The Applicable Documents section should include a list of all applicable documents, and

may show where to obtain these documents. Applicable documents are deﬁned as documents that are speciﬁcally

called out within the test method, and do not include other reference documents. Reference documents may be

included in Section 6.0 NOTES of the test method.

SECTION 3.0

TEST SPECIMENS

The Test Specimens section should include the type, size, and quantity of specimens required to

conduct the test. Preparation of the specimens should be detailed in this section. If preparation is covered by another

IPC-TM-650 test method (i.e., microsectional preparation), that method should be referenced here. Necessary consid-

erations for storage, preservation, and handling of test specimens must also be made in this section.

SECTION 4.0

APPARATUS OR MATERIAL

This section should include all apparatus or materials utilized in the test method. It

should include the technical data, accuracy requirements, and range capabilities of the equipment or materials neces-

sary to adequately complete the test. This section should also include reference drawings for any specialized equip-

ment or test ﬁxtures required. If chemical reagents, puriﬁed water, or other specialized materials are to be used, purity,

concentration, and/or special formulas required must be detailed. Speciﬁc brand names or trademarks should be

avoided unless they are required for a well deﬁned reason. In this case, utilize a footnote giving the required informa-

tion along with either of the following phrases: ‘‘has been found satisfactory for this purpose;’’ ‘‘or equivalent.’’