MIL-STD 202 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.

MIL-STD 202 outlines the 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. MIL-STD 202 tests 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.

The test methods established in MIL-STD 202 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. The D.L.S. technical staff can provide guidance in this area to ensure proper testing paths are appropriate.

MIL-STD 202 tests are divided into three classes: Test methods, see below, 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.

The most current revision of MIL- STD 202, Revision H, replaced Revision G. Updated revisions of the test methods are indicated by a letter following the method number.

D.L.S. can support MIL-STD 202 testing requirements, as well as MIL-STD 461 for EMI/EMC and MIL-STD 810 for Environmental requirements. The technical staff can provide development assistance in the form of test plans and procedures, as well design assistance. Contact D.L.S. today to review your next project.

  MIL STD 202 Rev H

Method      Tests

Environmental Tests:

-101  Salt atmosphere (corrosion) (formerly called salt spray)

-102  Superseded by Method 107 (see 6.3)

-103  Humidity (steady state)

-104  Immersion

-105  Barometric pressure (reduced)

-106  Moisture resistance

-107  Thermal shock

-108  Life (at elevated ambient temperature)

-109  Explosion

-110  Sand and dust

-111  Flammability (external flame)

-112  Seal

 

Physical Characteristics Tests:

-201  Vibration

-202  Superseded by Method 213 (see 6.3)

-203  Random drop

-204  Vibration, high frequency

-205  Superseded by Method 213 (see 6.3)

-206  Life (rotational)

-207  High-impact shock

-208  Solderability

-209  Radiographic inspection

-210  Resistance to soldering heat

-211  Terminal strength

-212  Acceleration

-213  Shock (specified pulse)

-214  Random vibration

-215  Resistance to solvents

-216  Superseded by Method 210 (see 6.3)

-217  Particle impact noise detection (PIND)

 

Electrical Characteristic Tests: 

-301  Dielectric withstanding voltage

-302  Insulation resistance

-303  DC resistance

-304  Resistance temperature characteristic

-305  Capacitance

-306  Quality factor (Q)

-307  Contact resistance

-308  Current-noise test for fixed resistors

-309  Voltage coefficient of resistance determination procedure

-310  Contact-chatter monitoring

-311  Life, low level switching

-312  Intermediate current switching