unisonic technologies co., ltd sfr1020c diode www.unisonic.com.tw 1 of 4 copyright ? 2016 unisonic technologies co., ltd qw-r601-004.c ultra-fast recovery rectifier diodes ? description utc sfr1020c is dual center tap rectifier suited for high frequency switching mode powersupplies applications. ? features * high surge current capability * suited for smps, dc ~ dc converters * low forward and reverse recovery time * low losses ? connection diagram ? ordering information order number pin assignment lead free halogen free package 1 2 3 packing sfr1020cl-ta3-t SFR1020CG-TA3-T to-220 a1 k a2 tube note: pin assignment: a: anode k: cathode ? marking
sfr1020c diode unisonic technologies co., ltd 2 of 4 www.unisonic.com.tw qw-r601-004.c ? absolute maximum rating (limiting values, per leg) parameter symbol ratings unit repetitive peak reverse voltage v rrm 200 v rms forward current i f(rms) 10 a average forward current = 0.5 t c =125c (per leg) i f(av) 5 a surge non repetitive forward current, t p =10ms sinusoidal i fsm 50 a storage temperature range t stg -60 ~ +150 c note 1. absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. 2. the device is guaranteed to meet performance specification within 0 c~70c operating temperature range and assured by design from ?20c~85c. ? electrical characteristics (per leg) parameter symbol test conditions min typ max unit t j = 25c 50 a reverse leakage current (note1) i r t j = 100c v r = v rrm 0.6 ma t j = 25c i f = 5 a 0.9 v forward voltage drop (note2) v f t j = 125c i f = 5 a 0.69 0.74 v note1. tp = 5 ms, < 2 % 2. tp = 380 s, < 2 % to evaluate the conduction losses use the following equation: p = 0.78 i f(av) + 0.042 if 2 (rms) ? recovery characteristics parameter symbol test conditions min typ max unit reverse recovery time t rr t j = 25c, i f = 0.5a, v f = 30v, i r = 1a 40 ns formard recovery time t fr t j = 25c, i f = 1a, di f /d t = 50 a/ s v r =30v 33 ns v fp t j = 25c, i f = 1a, di f /d t = 50 a/ s 3 v note: when diodes 1 and 2 are used simultaneously : ? t j (diode 1) = p(diode 1)r th(j-c) ( per leg) + p(diode 2) r th(c)
sfr1020c diode unisonic technologies co., ltd 3 of 4 www.unisonic.com.tw qw-r601-004.c ? typical characteristics average forward power dissipation,p f (av) (w) = 0 . 1 = 0 . 2 = 0 . 5 peak curren ,i m (a) 1.0 0.1 ie-3 =0.2 single pulse =0.5 =0.1 ie-2 ie-1 ie+0 pulse duration,t (s) 0.1 2.0 1.0 10.0 50.0 forward voltage drop, v fm (v) t j =25c 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 t j =125c forward voltage drop versus forward current (maximum values, per diode) relative variation of thermal versus impedance junction to case versus pulse duration t =tp/t tp
sfr1020c diode unisonic technologies co., ltd 4 of 4 www.unisonic.com.tw qw-r601-004.c ? typical characteristics (cont.) junction capacitance, c (pf) reverse recovery charges, qrr (nc) peak reverse recovery current, i rm (a) dynamic parameters:qrr; i rm (t j ) / qrr; i rm (t j =125c) utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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