Item Requirement Conditions
Bending Strength Appearance: There shall be no physical or Board: 90x40x1.6mm
mechanical damage Bend: 1mm
Impedance: Relative to initial value before test Time: 5 sec
±10%
Mechanical Shock Appearance: There shall be no physical or Force: 50G
mechanical damage Time: 11 msec
Impedance: Relative to initial value before test There shall be 3 shocks in each of 6 directions
±10% (18 shocks total).
Vibration Impedance: Relative to initial value ±10% Only endurance conditioning by sweeping shall
be made. The entire frequency range from
10-2,000Hz and return to 10Hz in 20
minutes (this shall constitute one cycle).
Amplitude: 1.5mm
The test shall have a 15G peak and shall be
applied for a period of 4 hours (12 cycles)
in each of 3 mutually perpendicular directions
(a total of 36 cycles within a total of 12 hours).
Thermal Shock Appearance: There shall be no physical or Step Temperature Time
mechanical damage. 1-start -40°C ±2°C
—
Impedance: Relative to initial value ±20%. 2-hold -40°C ±2°C 30 min ±5 min
DCR: The DCR shall not exceed initial specified 3-transfer
—
0.5 min max.
value. 4-hold +105°C ±2°C 30 min ±5 min
5-transfer
—
0.5 min max.
Testing of the parts will be made at 0 hours, 250
hours and 500 hours. Before testing the parts Steps 1 thru 5 constitute one complete cycle
shall be allowed to cool to room temperature for and the test shall consist of a total of 500
24 hours. cycles.
Load Humidity Appearance: There shall be no physical or Temperature: 85°C ±2°C
mechanical damage Relative Humidity: 85%
Impedance: Relative to initial value ±15% Time: 1,000 hours total
Apply: 100% rated current
Measurements shall be taken at 0 hours, 250
hours, 500 hours and 1,000 hours and shall meet
the conditions stated above.
Life Test Appearance: There shall be no physical or Temperature: 85°C ±2°C
mechanical damage Time: 1,000 hours total
Impedance: Relative to initial value ±15% Apply: 100% rated current
Measurements shall be taken at 0 hours, 250
hours, 500 hours and 1,000 hours and shall meet
the conditions stated above.
5. Characteristics (continued)