MIL-STD-202H
1. SCOPE
1.1 Purpose. This standard establishes uniform methods for testing electronic and electrical component parts, including
basic environmental tests to determine resistance to deleterious effects of natural elements and conditions surrounding military
operations, and physical and electrical tests. For the purpose of this standard, the term "component parts" includes such
items as capacitors, resistors, switches, relays, transformers, inductors, and others. This standard is intended to apply only to
small component parts, weighing up to 300 pounds or having a root mean square test voltage up to 50,000 volts unless
otherwise specifically invoked. The test methods described herein have been prepared to serve several purposes:
a. To specify suitable conditions obtainable in the laboratory that give test results equivalent to the actual service
conditions existing in the field, and to obtain reproducibility of the results of tests. The tests described herein are not
to be interpreted as an exact and conclusive representation of actual service operation in any one geographic
location, since the only true test for operation in a specific location is an actual service test at that point.
b. To describe in one standard (1) all of the test methods of a similar character which appeared in the various joint or
single-service electronic and electrical component parts specifications, (2) those test methods which are feasible for
use in several specifications, and (3), the recognized extreme environments, particularly temperatures, barometric
pressures, etc., at which component parts will be tested under some of the presently standardized testing
procedures. By so consolidating, these methods may be kept uniform and thus result in conservation of equipment,
man-hours, and testing facilities. In achieving these objectives, it is necessary to make each of the general tests
adaptable to a broad range of electronic and electrical component parts.
c. The test methods described herein for environmental, physical, and electrical tests shall also apply, when applicable,
to parts not covered by an approved military specification, military sheet form standard, specification sheet, or
drawing.
1.2 Test method numbering system. The test methods are designated by numbers assigned in accordance with the
following system:
1.2.1 Class of tests. The tests are divided into three classes: Test methods numbered 101 to 199 inclusive, cover
environmental tests; those numbered 201 to 299 inclusive, cover physical characteristics tests; and those numbered 301 to
399 inclusive, cover electrical characteristics tests. Within each class, test methods are serially numbered in the order in
which they are introduced into this standard.
1.2.2 Revision of test methods. Revisions of test methods are indicated by a letter following the method number. For
example, the original number assigned to the moisture resistance test method is -106; the first revision of that method
“-106A”, the second revision, “-106B”, etc.
1.3 Method of reference. When applicable, test methods contained herein shall be referenced in the individual specification
by specifying this standard with the dash number(-xxx) or this standard with the method number, and the details required in
the summary paragraph of the referenced method. To avoid the necessity for changing specifications which refer to this
standard, the revision letter following the method number shall not be used when referencing test methods. The preferred
wording to reference a method starting with revision H is “MIL-STD-202-106”; “MIL-STD-202, method 106” is still acceptable.
2. APPLICABLE DOCUMENTS
2.1 General. The documents listed in this section are specified in sections 3, 4, 5, and individual test methods of this
standard. This section does not include documents cited in other sections of this standard or recommended for additional
information or as examples. While every effort has been made to ensure the completeness of this list, document users are
cautioned that they must meet all specified requirements documents cited in sections 3, 4, 5, and the individual test methods
of this standard, whether or not they are listed.
2.2 Government documents.
2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this
document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the
solicitation or contract.
FEDERAL SPECIFICATIONS
This section is not applicable to this standard.
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