1 murh840ct/d murh840ct power rectifier features and benefits ? low forward voltage ? low power loss/high efficiency ? high surge capacity ? 175 c operating junction temperature ? 8 a total (4 a per diode leg) ? pb?free package is available applications ? power supply ? output rectification ? power management ? instrumentation mechanical characteristics ? case: epoxy, molded ? epoxy meets ul 94 v?0 @ 0.125 in ? weight: 1.9 grams (approximately) ? finish: all external surfaces corrosion resistant and terminal leads are readily solderable ? lead temperature for soldering purposes: 260 c max. for 10 seconds ? esd rating: human body model 3b machine model c device package shipping ordering information murh840ct to?220 http://kersemi.com to?220ab case 221a plastic 50 units/rail 3 4 1 ultrafast rectifier 8.0 amperes, 400 volts t rr = 28 ns 1 3 2, 4 2 marking diagram a = assembly location y = year ww = work week uh840 = device code g = pb?free package aka = diode polarity MURH840CTG to?220 (pb?free) 50 units/rail ayww uh840g aka
murh840ct http://kersemi.com 2 maximum ratings rating symbol value unit peak repetitive reverse voltage working peak reverse voltage dc blocking voltage v rrm v rwm v r 400 v average rectified forward current (t c = 155 c) per leg total device i f(av) 4.0 8.0 a peak repetitive forward current per diode leg (square wave, 20 khz, t c = 149 c) i fm 8.0 a non?repetitive peak surge current (surge applied at rated load conditions halfwave, single phase, 60 hz) i fsm 100 a controlled avalanche energy w aval 20 mj operating junction and storage temperature range t j , t stg ?65 to +175 c stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above t he recommended operating conditions is not implied. extended exposure to stresses above the recommended operating conditions may af fect device reliability. thermal characteristics characteristic conditions symbol max unit maximum thermal resistance, junction?to?case min. pad r jc 3.0 c/w maximum thermal resistance, junction?to?ambient min. pad r ja 60 electrical characteristics characteristic symbol min typical max unit maximum instantaneous forward voltage (note 1) (i f = 4.0 a, t j = 150 c) (i f = 4.0 a, t j = 25 c) v f ? ? 1.12 1.45 1.9 2.2 v maximum instantaneous reverse current (note 1) (rated dc voltage, t j = 150 c) (rated dc voltage, t j = 25 c) i r ? ? 300 4.0 500 10 a maximum reverse recovery time (i f = 1.0 a, di/dt = 50 a/ s) t rr ? ? 28 ns 1. pulse test: pulse width = 300 s, duty cycle 2.0%. figure 1. typical forward voltage figure 2. maximum forward voltage 0.4 0.8 1.2 1.6 2.0 v f , instantaneous forward voltage (v) 2.4 2.8 3.2 100 10 1.0 0.1 i f , instantaneous forward current (a) 175 c 150 c 100 c 25 c 0.6 1.0 1.4 1.8 2.2 v f , instantaneous forward voltage (v) 2.6 3.0 5. 0 100 10 1.0 0.1 i f , instantaneous forward current (a ) 175 c 150 c 100 c 25 c 3.4 3.8 4.2 4.6
murh840ct http://kersemi.com 3 dc dc v r , reverse voltage (volts) i r , reverse current (a) 0.1 0 1000 0.2 0.5 1 5 10 20 50 100 200 500 50 100 150 200 250 300 350 400 i f(av) , average forward current (amps) t a , ambient temperature ( c) 0 75 2.0 4.0 6.0 8.0 1.0 100 125 175 t j = 150 c 100 c 25 c square wave 2 50 25 0 3.0 5.0 figure 3. typical reverse current, per leg figure 4. forward current derating, ambient, per leg figure 5. current derating, case, per leg c, capacitance (pf) v r , reverse voltage (volts) 0.01 1000 100 10 1 0.1 1 10 100 figure 6. typical capacitance, per leg t c , case temperature ( c) 0 2.0 4.0 6.0 8.0 120 130 140 150 160 170 180 dc square wave 7.0 150 square wave r ja = 16 c/w r ja = 60 c/w, no heatsink i f(av) , average forward current (a) figure 7. power dissipation, per leg p f(av) , average power dissipation (watts) i f(av) , average forward current (amps) 0 60 52 48 36 32 20 16 12 8.0 4.0 0 2.0 4.0 8.0 6.0 10 12 14 16 square wave dc t j = 175 c 24 28 40 44 56
murh840ct http://onsemi.com 4 package dimensions to?220 case 221a?09 issue ad notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. dimension z defines a zone where all body and lead irregularities are allowed. style 6: pin 1. anode 2. cathode 3. anode 4. cathode dim min max min max millimeters inches a 0.570 0.620 14.48 15.75 b 0.380 0.405 9.66 10.28 c 0.160 0.190 4.07 4.82 d 0.025 0.035 0.64 0.88 f 0.142 0.147 3.61 3.73 g 0.095 0.105 2.42 2.66 h 0.110 0.155 2.80 3.93 j 0.018 0.025 0.46 0.64 k 0.500 0.562 12.70 14.27 l 0.045 0.060 1.15 1.52 n 0.190 0.210 4.83 5.33 q 0.100 0.120 2.54 3.04 r 0.080 0.110 2.04 2.79 s 0.045 0.055 1.15 1.39 t 0.235 0.255 5.97 6.47 u 0.000 0.050 0.00 1.27 v 0.045 ??? 1.15 ??? z ??? 0.080 ??? 2.04 b q h z l v g n a k f 123 4 d seating plane ?t? c s t u r j murh840ct/d
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