tm november FFPF20UP40S ?2010 fairchild semiconductor corporation FFPF20UP40S rev. a www.fairchildsemi.com 1 FFPF20UP40S features ? high speed switching, t rr < 50ns ? high reverse voltage and high reliability ? avalanche energy rated ? max forward voltage, v f < 1.4v ? rohs compliant applications ? boost diode in pfc and switching mode power supply ? freewheeling diodes 20a, 400v uitra fast rectifier the FFPF20UP40S is a uitrafast rectifier with low forw ard voltage drop. this device is intended for use as freewhe eling and clamping rectifiers in a variety of switching power suppl ies and other power switching applications. it is specially suite d for use in switching power supplies and industrial application. absolute maximum ratings t c = 25 o c unless otherwise noted thermal characteristics package marking and ordering information symbol parameter ratings units v rrm peak repetitive reverse voltage 400 v v rwm working peak reverse voltage 400 v v r dc blocking voltage 400 v i f(av) average rectified forward current @ t c = 100 o c 20 a i fsm non-repetitive peak surge current 60hz single half-sine wave 200 a t j , t stg operating and storage temperature range -55 to +150 o c symbol parameter ratings units r jc maximum thermal resistance, junction to case 2.6 o c/w device marking device package reel size tape width quant ity FFPF20UP40S FFPF20UP40S to-220f - - 50 1. cathode 2. anode 1. cathode 2. anode to-220f-2l
FFPF20UP40S FFPF20UP40S rev. a www.fairchildsemi.com 2 electrical characteristics t c = 25 o c unless otherwise noted symbol parameter min. typ. max. units v fm 1 i f = 20a i f = 20a t c = 25 o c t c = 125 o c -- -- 1.4 1.4 v i rm 1 v r = 400v v r = 400v t c = 25 o c t c = 125 o c -- -- 50 50 a t rr i rr q rr i f = 20a, di/dt = 200a/ s t c = 25 o c -- - 29 3.3 47 50 5.5 138 ns a nc w avl avalanche energy ( l = 40mh) 1 - - mj test circuit and waveforms notes: 1: pulse: test pulse width = 300 s, duty cycle = 2%
FFPF20UP40S FFPF20UP40S rev. a www.fairchildsemi.com 3 typical performance characteristics figure 1. typical forward voltage drop vs. forward current figure 2. typical reverse current vs. reverse voltage figure 3. typical junction capacitance figure 4. typical reverse recovery time vs. di/dt figure 5. typical reverse recovery current vs. di/dt figure 6. forward current derati ng curve 0 80 160 240 320 400 0.01 0.1 1 10 100 t c = 75 o c t c = 25 o c t c = 125 o c reverse current , i r [ a ] reverse voltage, v r [v] 0.0 0.5 1.0 1.5 2.0 1 10 100 t c = 75 o c t c = 125 o c forward current, i f [a] forward voltage, v f [v] t c = 25 o c 0.1 1 10 100 0 200 400 600 800 1000 capacitances , cj [pf] typical capacitance at 0v = 16pf reverse voltage, v r [v] 100 200 300 400 500 10 20 30 40 50 60 70 t c = 75 o c i f = 20a t c = 25 o c t c = 125 o c reverse recovery time, t rr [ns] di/dt [ a/ s ] 100 200 300 400 500 2 4 6 8 10 12 t c = 75 o c i f = 20a t c = 25 o c t c = 125 o c reverse recovery current, i rr [a] di/dt [ a/ s ] 25 50 75 100 125 150 0 10 20 30 40 50 average forward current, i f(av) [a] case temperature, t c [ o c ]
FFPF20UP40S FFPF20UP40S rev. a www.fairchildsemi.com 4 mechanical dimensions to-220f 2l
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