Spire BLACKDRAGON 400 / SP-R-400WTB-PFC - Manual (Page 15)

Version:A/0 Page 15 of 18
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6 Reliability
6.1 Component Derating
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.
6.2 Mean Time Between Failures(MTBF)
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
7. Correlative Certification compliance
Item # Certification type
Certification
Number
Certification listing Remark
1 CE
2 ROHS
3 TUV