MIL-DTL-25879G
3.3 Performance (electrical).
3.3.1 Operating voltage. When tested as specified in 4.7.2, the switch shall operate properly within the limits and
conditions specified.
3.3.2 Operating current. When tested as specified in 4.7.3, the operating current shall not exceed one ampere.
3.3.3 Switching rate. When tested as specified in 4.7.4, the switch shall operate properly up to 140 operations per
minute.
3.3.4 Switching time. When tested as specified in 4.7.5, the switching time shall not exceed 20 ms.
3.3.5 Voltage standing wave ratio (VSWR). When tested as specified in 4.7.6, the VSWR shall not exceed 1.2:1.
3.3.6 Insertion loss. When tested as specified in 4.7.7, the insertion loss shall not exceed 0.20 dB.
3.3.7 Isolation. When tested as specified in 4.7.8, the isolation shall be not less than 40 dB.
3.3.8 Insulation resistance (RF). When tested as specified in 4.7.9, the insulation resistance shall be not less than
10 MegΩ.
3.3.9 Dielectric withstanding voltage. When tested as specified in 4.7.10, all current carrying portions of the switch
shall successfully withstand the application of 1,000 V rms at 60 Hz.
3.3.10 RF power handling capability. When tested as specified in 4.7.11, the switch shall be capable of switching
4.5 kW peak power at 0.1 percent duty cycle (4.5 W average) and carry 100 W average power in a steady-state
condition.
3.3.11 Internal RF contact resistance. When tested as specified in 4.7.12, the switch contact resistance shall not
exceed 0.025 Ω at 1 A.
3.3.12 Connector torque. When tested as specified in 4.7.13, the power and RF connectors shall withstand 45
foot-pounds of torque.
3.4 Performance (environmental).
3.4.1 Thermal shock. When tested as specified in 4.7.14, the switch shall meet the original parameters for
switching time, VSWR, and dielectric withstanding voltage.
3.4.2 Immersion. When tested as specified in 4.7.15, the switch shall show no evidence of leaking.
3.4.3 Shock. When tested as specified in 4.7.16, the switch shall meet the original parameters for switching time
and VSWR.
3.4.4 Random vibration. When tested as specified in 4.7.17, continuity of the RF contacts shall remain stable in
each of all possible positions. After completion of the vibration test, the switching time and VSWR shall meet the
original parameters.
3.4.5 Humidity. When tested as specified in 4.7.18, the switch shall show no visible evidence of deterioration and
the dielectric withstanding voltage test shall meet the original parameters.
3.4.6 Salt atmosphere. When tested as specified in 4.7.19, the switch shall show no evidence of external
deterioration and the VSWR, switching time, and dielectric withstanding voltage test values shall meet the original
parameters.
3.5 Reliability. When tested as specified in 4.7.20, the switch shall provide a minimum acceptance mean time
between failures (MTBF) of 1,000 hours.
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