MIL-PRF-15305 Coils, Electrical, Fixed And Variable, Radio Frequency General Specification ForThis specification covers the general requirements for radio frequency coils, fixed and variable, for use as simple inductive elements in radio frequency circuits. Procurement of coils of a specific design will require additional data in the form of complementary Service documents, giving detail electrical and mechanical requirements, tolerances, and applicable additions and exceptions to the general requirements and tests specified herein \(see 3.1\).

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MIL-PRF-15305F

4.6.2 Thermal shock (see 3.5). Coils shall be tested in accordance with method 107 of MIL-STD-202. The

following details and exceptions shall apply:

Test condition A-1 for qualification; A for group A inspection. Step 3 shall be at the maximum operating

temperature for the class. (NOTE: The manufacturer has the option of performing the group A thermal

shock test at 125�C for all products supplied to this specification. However, performing the test at a

higher temperature than the maximum operating temperature for some QPL coils is at the risk of the

manufacturer.)

Measurements after cycling � Winding continuity shall be determined, dielectric withstanding voltage,

and the insulation resistance as specified in 4.6.3.

FIGURE 2. Coil-connecting assembly for mounting during polarization.