NO.
1
2
3
4
5
6
7
Ea x (1/T1-1/T2) / K
There are no visual abnormalities.
There are no visual abnormalities.
SEALING
TIGHTNESS
MIL-STD 202F
METHOD 112D
TEST C AND D
9
1) Dipping in Florinert at:
10
Mean Time
Between Failures
(MTBF)
+125 ±5ºC for 5 min.
(Gross Leak)
2) Leak rate shall be measured by using:
Helium leak Detector
(Fine Leak)
There are no visual abnormalities.
There are no visual abnormalities.
RELIABILITY TEST PROCEDURES
FOR UM-5, UM-1, UM-4 Series
TEMPERATURE
CYCLE
Frequency Drift ±5 PPM Max.
Resistance Drift ±15% Max.
8
STRENGTH OF
TERMINALS/LEAD
WIRES
1) Lead Pull:
Weight: 1 Kg
Time: 30 sec.
2) Lead Bend:
Bending Angle: 90 degrees
Bending Count: 2 times
HUMIDITY
Frequency Drift ±5 PPM Max.
Resistance Drift ±15% Max.
+ 60 ± 2ºC in humidity
95% for 500 hours.
THERMAL SHOCK
Frequency Drift ±5 PPM Max.
Resistance Drift ±15% Max.
Supply 500 cycles as follows:
Temperature shift shall be done within 30 sec.
-55 ±2ºC +125 ±2ºC
(30 min) <------------------> (30 min)
Vibration Frequency: 10 to 55Hz, 1.5mm, full wave
Cycle: 2 min.
Direction: X.Y.Z.
Time: 2 hours in each direction
Frequency Drift ±5 PPM Max.
Resistance Drift ±15% Max.
STORAGE IN HIGH
TEMPERATURE
+85 ±2ºC for 500 hours.
Frequency Drift ±5 PPM Max.
Resistance Drift ±15% Max.
STORAGE IN LOW
TEMPERATURE
-40 ±2ºC for 500 hours.
Frequency Drift ±5 PPM Max.
Resistance Drift ±15% Max.
MTBF (25ºC) =
HsXeºCe___________________
16396600 Hours
π
TEST NAME
TEST PROCEDURES
REQUIREMENTS
SHOCK
Drop 3 times from the height of 100cm onto hard
wooden board.
Frequency Drift ±5 PPM Max.
Resistance Drift ±15% Max.
VIBRATION