MIL-S-4040G
3.6.2 Solderability (see 4.7.9). The critical examination area of solid wire lead and pin terminals shall be at least
95 percent covered with a continuous new solder coating in accordance with method 208 of MIL-STD-202. For solder-lug terminals greater than .045 inch (1.14 mm) in diameter, 95 percent of the total length of fillet, which is between the standard wrap wire and the terminal, shall be tangent to the surface of the terminal being tested and shall be free of pinholes, voids, etc. A ragged or interrupted line at the point of tangency between the fillet and the terminal under test shall be considered a failure.
3.6.3 Vibration (see 4.7.10). There shall be no evidence of loosening of parts or mechanical damage to the solenoid. Following this test, the operating force (torque), compensated actuating voltage, and deactuating voltage (or current) shall be as specified in 3.5.1.1, 3.5.1.2, and 3.5.1.3, respectively.
3.6.4 Shock (see 4.7.11). There shall be no evidence of mechanical or electrical damage, nor shall the test impair the normal operation of the solenoid. Following this test, the operating force (torque), compensated actuating voltage, and deactuating voltage (or current) shall be as specified in 3.5.1.1, 3.5.1.2, and 3.5.1.3, respectively.
3.6.5 Acceleration (when specified, see 3.1 and 4.7.12). The solenoids shall meet the specified requirements. During this test, the compensated actuated voltage and deactuating voltage (or current) shall be as specified in
3.5.1.2 and 3.5.1.3.
3.6.6 Moisture resistance. Unless otherwise specified (see 3.1), solenoids shall be tested in accordance with
4.7.13. There shall be no evidence of breaking, cracking, or spalling of the solenoids. Immediately after step 6 of the final cycle, the insulation resistance shall be at least 1 megohm, and the compensated actuated voltage shall be as
specified in 3.5.1.2. After the 24 hour drying period, the insulation resistance shall be at least 50 megohms. The
operating force (torque), compensated actuating voltage, and deactuating voltage (or current) shall be as specified in
3.5.1.1, 3.5.1.2, and 3.5.1.3, respectively.
3.6.7 Altitude (when specified: see 3.1 and 4.7.14). Following this test; the insulation resistance, operating force
(torque), compensated actuating voltage, and deactuating voltage (or current) shall be as specified in 3.5.2, 3.5.1.1,
3.5.1.2, and 3.5.1.3, respectively.
3.6.8 High temperature (see 4.7.15). The solenoids shall meet the operating force (torque) requirements specified in 3.5.1.1.
3.6.9 Low temperature (see 4.7.16). The solenoids shall meet the operating force (torque) requirements specified in 3.5.1.1.
3.6.10 Salt spray (see 4.7.17). There shall be no evidence of corrosion, or peeling, chipping, or blistering of the finish, nor exposure of the base metal when inspected by the unaided eye. Following this test, the insulation resistance, operating force (torque), compensated actuating voltage, and deactuating voltage (or current) shall be as specified in 3.5.2, 3.5.1.1, 3.5.1.2, and 3.5.1.3, respectively. For sealed or encapsulated solenoids, dielectric withstanding voltage (at sea level) (see 3.5.3) shall be applicable.
3.6.11 Sand and dust (when specified, see 3.1 and 4.7.18). Following this test, the operating force (torque), compensated actuating voltage, and deactuating voltage (or current) shall be a specified in 3.5.1.1, 3.5.1.2, and
3.5.1.3, respectively.
3.6.12 Explosion (when specified, see 3.1 and 4.7.19). Solenoids shall not ignite an ambient explosive atmosphere.
3.7 Life (see 4.7.20). The solenoid shall remain mechanically and electrically operative. There shall be no indication of mechanical resonance due to the frequency of the energizing voltage. Following this test, the coil resistance shall be within ±2 percent of the prelife value, and the insulation resistance and dielectric withstanding voltage (at sea level), shall be as specified in 3.5.2 and 3.5.3, respectively.
3.7.1 Coil life (see 4.7.21). The coil current (see 4.7.2.5) and DC coil resistance (see 4.7.2.6) shall be within five percent of the prelife value. Following the test, insulation resistance and dielectric withstanding voltage shall be as specified in 3.5.2 and 3.5.3, respectively.
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