Spire SilentEagle 650W SP-ATX-650WTB-APFC-2 User Manual

 

Version:A/0                                                                                                                                                        Page 15 of 17 

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The following component derating guedelines are recommended: 
‧

Semiconductor junction temperatrues shall not exceed 110℃ with an ambient 

of 50℃. 
‧

Inductor case temperature shall not exceed safety agency requirements. 

‧

Capacitor case temperature shall not exceed 95% of rated temperature. 

‧

Component voltage and current derating shall be >10% at 50℃. 

‧

Magnetic saturation of any transformer will not be allowed under any line, load, 

startup or transient condition including 100% transients on the five main outputs or 
+5VSB. 

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 100,000 hours under the 
following conditions: 

- Full-rated 

load 

- 230VAC 

input 

- Ground 

begin 

- 25℃ ambient