MIL-DTL-62739A(AT)
3.3.7 Soldering. Soldering shall meet or exceed the requirements of
ANSI/IPC J-STD-001 (see 4.2).
3.4 Interface requirements. Each PWA shall accommodate the following requirements.
3.4.1 PWA overall envelope. Overall envelope of the PWA shall be in accordance with
Drawing 12258780.
3.5 Ownership and support requirements.
3.5.1 Interchangeability. Interchangeability tolerances should permit parts, subassemblies
and assemblies to be used in their parent assemblies without regard to the source of supply or
manufacturer. Parts, subassemblies and assemblies having the full range of dimensions and
characteristics permitted by the specification governing the part, subassembly or assembly should
be usable as replacement items without selection and without departure from the specified
performance guidelines of the parent items.
3.5.2 Identification marking. Unless otherwise specified (see 6.2), identification marking
shall be permanent and legible and shall include as minimum the following:
a. Nomenclature "PRINTED WIRING ASSEMBLY, CLOCK/DISPLAY
DRIVER".
b. Military part number.
c. Manufacturer's CAGE code and name.
d. Manufacturer's serial numbers.
e. Contract number.
f. Symbol "US".
3.6 Operating environment requirements. Each PWA shall operate under the following
environmental conditions without damage or loss of performance.
3.6.1 Temperature.
3.6.1.1 High temperature (operating). The PWA shall be capable of operation without
damage or malfunction at a high temperature of 125 degrees Fahrenheit (°F) (52 degrees Celsius
(°C)) (without solar radiation).
3.6.1.2 Low temperature (operating). The PWA shall be capable of operation without
damage or malfunction at a low temperature of 20°F (minus (-) 7°C) for ambient temperature
below 20°F, the test set shall be operated in a shelter.
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