iStarUSA TC-1U30FX2 User Manual

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11

          Temperature: 0℃ to 40℃ 

     Humidity:   20% to 80% Relative Humidity (non condensing) 

     Altitude:    -61meters to +3,048 meters 

          Shock:            T.B.S. 

          Vibration:        T.B.S. 

 

          Temperature:    -25℃ to 85℃ 

     Humidity:    10% to 90% Relative Humidity (non condensing) 

     Altitude:     -61meters to +15,244 meters 

          Shock:              T.B.S. 

          Vibration:        T.B.S. 

 

In order to prolong the fan’s life cycle, the power supply is facilitated with a   

thermostatic circuitry to monitor the fan speed under the power supply   

operating temperature.   

The power supply reliability is based on the calculation with the Part-Stress Analysis 

method of MIL-HDBK-217F using the quality factors listed in   

MIL-HDBK-217F. The power supply MTBF is 250,000 hours under the   

following conditions: 

- 

Full-rated load 

- 

120VAC input 

- 

Ground begin 

- 

25℃ ambient 

 

4.5  MTBF 

 

 

 

 

 

    

 

 

 

 

 

   MTBF (mean time between failures) calculation  

 

 

    

 

 

 

 

 

   The demonstrated MTBF shall be 100,000 hours of continuous operation at 25

o

C,full load, 

   80% confidence limit and nominal line. The MTBF of the power supply be calculated in 

   accordance with MIL-HDBK-217F. The DC FAN is not included.