MIL-STD-981C
5.6.7.3.5 Radio frequency, fixed, and variable transformers (families 11 and 12, respectively). These devices shall be subjected to the group A screening tests in TABLE VI.
TABLE VI. Group A screening tests for families 11, 12 respectively (see 5.6.7.3.5).
Examination/Test |
Class |
Applicable Military Specification |
Inspection |
|
S |
B |
|||
Subgroup I Thermal shock Temperature rise 1/ Burn-in Seal (when applicable) Induced voltage Dielectric withstanding voltage (at atmospheric pressure) Insulation resistance Electrical characteristics Radiographic inspection |
x x x x x x x x |
x x x x x x x 2/ |
See 5.6.7.3.3.1 MIL-T-55631 See 5.6.7.3.4 MIL-T-55631 MIL-T-55631 MIL-T-55631 MIL-T-55631 MIL-T-55631 See appendix B |
100 percent |
Subgroup II Visual and dimensional examination (external) |
x |
x |
MIL-T-55631 |
100 percent |
1/ Test 2 units for temperature rise per applicable specification if temperature rise is not known.
2/ When specified.
5.6.7.3.6 Radio frequency fixed and variable coils (families 13 and 14 respectively). These devices shall be subjected to the group A screening tests, in TABLE VII.
TABLE VII. Group A screening tests for families 13 and 14 (See 5.6.7.3.6)
Examination/Test |
Class |
Applicable Military Specification |
Inspection |
|
S |
B |
|||
Subgroup I Thermal shock Temperature rise 1/ No-load Burn-in Dielectric withstanding voltage Insulation resistance Inductance Q Self resonant frequency DC resistance Radiographic inspection |
x x x x x x x x x x |
x x x x x x x x x 2/ |
See 5.6.7.3.6.1 MIL-PRF-15305 See 5.6.7.3.6.2 MIL-PRF-15305 MIL-PRF-15305 MIL-PRF-15305 MIL-PRF-15305 MIL-PRF-15305 MIL-PRF-15305 See appendix B |
100 percent |
Subgroup II Visual and dimensional examination (external) |
x |
x |
MIL-PRF-15305 |
100 percent |
1/ Test 2 units for temperature rise per applicable specification if temperature rise is not known.
2/ When specified.
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