MIL-R-83407C
TABLE I. First article inspection. 1/
Examination or test 2/ |
Requirement paragraph |
Test paragraph |
Number of sample relays to inspect |
Number of failures permitted |
Group I Screening (when specified) (see 3.1) ------ Solderability -------------------------------------- Visual and mechanical examination (external) ------------------------------------------ Dielectric withstanding voltage -------------- Insulation resistance --------------------------- DC coil resistance ------------------------------ Pickup and dropout voltage ------------------ Coil power dissipation (when specified) --- Contact resistance ----------------------------- Operate and release time -------------------- Coil inductance (when specified) ----------- Contact noise (when specified) ------------- Thermal EMF (when specified) -------------- Capacitance (when specified) --------------- |
3.28 3.5 3.1, 3.3, 3.4, 3.26, and 3.30 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 |
4.5.23 4.5.2 4.5.1 4.5.3 4.5.4 4.5.5 4.5.6 4.5.7 4.5.8 4.5.9 4.5.10 4.5.11 4.5.12 4.5.13 |
2 2 1/ All relays in sample ( 11 total 3/ ) 2 1/ |
0 1 |
Group II Thermal shock (high and low temperature operation) ----------------------------------------- Shock (specified pulse) (nonoperating) --- Vibration (nonoperating) ---------------------- Moisture resistance (when specified) ------ Visual and mechanical examination (external) ------------------------------------------ |
3.17 3.18 3.19 3.20 3.1, 3.3, 3.4 3.26, and 3.30 |
4.5.14 4.5.15 4.5.16 4.5.17 4.5.1 |
3 |
1 |
Group III Magnetic interference ------------------------- Resistance to soldering heat ---------------- Salt spray (corrosion) ------------------------- Terminal strength ------------------------------ |
3.21 3.22 3.23 3.24 |
4.5.18 4.5.19 4.5.20 4.5.21 |
3 |
1 |
Group IV Life ------------------------------------------------- |
3.25 |
4.5.22 |
4 |
0 |
1/ Select the specified number of relays at random from the 11 sample units.
2/ A test procedure (such as dielectric withstanding voltage) required at the conclusion of a procedure shall be known as a post-test of that procedure. Some post-tests are required to be repeated on sample units as post-tests for more than one test procedure. At the option of the manufacturer, such post-testing shall be required only at the conclusion of the life test.
3/ One additional sample unit is included in each sample of 11 sample units to permit substitution for the failures allowed in group I.
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