张飞实战电子官方网站：zhangfeidz ?点击打开 （广告勿扰100%拒绝水贴，10名疯狂工程师运营的网站，有问必答） CUSTOMER MODEL: MODEL NO : MTBF ( at 25℃ ambient) (Calcuated per MIL-HDBK-217F) DATE: DESIGN NO.: Test Condition: INPUT= 90Vac 50Hz DESCRIPTION λp QTY POWER TRANSFORMER: T1 BRIDGE DIODE: BD1 DB155 SCHOTTKY DIODE:D4 SB10A100 0.5645 0.7619 0.58761111.5A /600V 10.0A /100V ELECTROLYTIC CAPACITOR: C1 33uf /400V 0.22uf /275V 680uf /16V 100uf /16V 4.0A /600V 100 ℃ 105 ℃ 105 ℃ 105 ℃ 0.7257 0.1967 2.2720 0.6694 1.2030 0.0114 0.5876 0.5876 11 211111 ELECTROLYTIC CAPACITOR: CX1 ELECTROLYTIC CAPACITOR:C7,C8 ELECTROLYTIC CAPACITOR:C9 MOSFET:Q1 4N60E LINE FILTER : L1 FR DIODE : D2 FR102 1.0A /200V FR DIODE : D1 1N4007 1.0A /1,000V Total Total failure rate per million hours MTBF= 1,000,000 / 10.439 = 95,791 HR INPUT: 90VAC 60Hz INPUT : 90V 264V 368V OUTPUT: 12.0VDC 1500mA 26.8 ℃ C1,C2(V) 117V (1)ROOM： TRS. Fosc 60KHz 60KHz (2) XFRM : T1 (3)FR DIODE:D1 (4)DE：D4 67.2 ℃ 70.5 ℃ Spec. Vcev 600V 600V 63.6 ℃ (5)X-CAP：CX1 (6)E/CAP:C7,C8 (7)E/CAP：C1 (8)Bri/De：BD1 (9)MOSFET : Q1 61.4 ℃ 58.3 ℃ 65.2 ℃ 73.4 ℃ 63.3 ℃ 67.9 ℃ 52.0 ℃ (10)Line Filter:L1 (11)E/CAP：C9 ( T1 ) TRANSFORMERS λp=λb*πQ*πE =0.56454290 λb= 0.00314 πQ=30 πE=6 8.7 ?THS ?273 ?? ?b ?0.0018exp? 364 ? ? ( D51,D53 ) Power Rectifier,Fast Recovery λp=λb*πT*πS*πC*πQ*πE =0.58758033 λb=0.069 ? ?11 ? ? = exp? - 3091? T J + 273 * 298 ÷ ÷ ÷ ÷ ? ? πT=3.2853615 πS=0.054 VS=0.12 ? ? è (見表1) V S ?Voltage Stress Ratio * Voltage è Appoied Rated Voltage πC=1.0 πQ=8.0 πE=6.0 表1 All Others VS≦3.0 0.3