features mechanical specification case: m finish: all external surfaces are corrosion resistant and the contact areas are readily solderable maximum lead soldering temperature: 210 c, 3/8" case for 10 seconds at 5 lbs tension mounting position: any polarity: color band or diode symbol on case weight: 0.09 ounces (2.5 grams) o olded epoxy (ul flammability rating 94v-o) mechanical data maximum ratings & electrical characteristics ratings at 25 c ambient temperature unless otherwise specified. data sheet no. dr820-1a 35 amp lead mount fast recovery button diodes tel.: (310) 767-1052 fax: (310) 767-7958 diotec electronics corp gardena, ca 90248 u.s.a 18020 hobart blvd., unit b die size: 0.180" x 0.180" square proprietary junction passivation for superior reliability and performance suggested replacement for MR820, mr821mr822, mr824, mr826 diodes compact molded design high surge current, 600 a @ t = 175 c low cost peak performance at elevated temperatures: 35 a j o @ t = 175 c j o void free vacuum die soldering for maximum mechanical strength and heat dissipation (solder voids: typical < 2%, max. < 10% of die area) m f a b l l d e inches millimeters min dim a b d max max min 0.332 0.234 0.050 0.342 0.2460.053 e 0.215 0.225 f 0.165 0.175 l 0.990 1.010 m 5 nom 5 nom rohs compliant non-repetitive peak reverse voltage (half wave, single phase, 60 hz peak) average forward rectified current @ t =150 c c o i o 35 peak forward surge current (8.3ms single half sine wave superimposed on rated load) i fsm 500 v rsm 60 120 240 480 720 parameter (test conditions) maximum dc blocking voltage maximum peak recurrent reverse voltage maximum rms voltage series number v rwm v dc v rrm symbol ratings dr820 dr821 dr822 dr824 dr826 50 100 200 400 600 maximum forward voltage drop at 35 amp dc, 3/8" leads v fm 1.1 (typical 1.05) maximum thermal resistance, junction to case (note 1) maximum average dc reverse current at rated dc blocking voltage i rm r q jc @ t = 25 c a o @ t = 100 c a o 1 50 0.9 junction operating and storage temperature range t j ,t stg amps units volts volts c/w m a c -65 to +175 notes: 1) both leads to heatsink, equal length average forward rectified current parameter (test conditions) maximum dc blocking voltage maximum peak recurrent reverse voltage maximum rms voltage series number i o v rms v rrm v rm symbol peak forward surge current (8.3ms single half sine wave superimposed on rated load) maximum forward voltage at 35 amps dc v fm i fsm 600 1.2 (typical 1.1) typical thermal resistance, junction to case (note 1) maximum average dc reverse current at rated dc blocking voltage i rm r q jc @ t = 25 c c o @ t = 100 c c o 2.0 100 0.8 maximum reverse recovery time (i = 1.0 amp to v = 30 vdc) f r (i = 15 amp, di/dt = 25 a/ s) fm m t rr 200 (typ. 150) 300 (typ. 150) units volts volts amps c/w m a nsec ratings 3501s srp 50 100 200 400 600 50 100 200 400 600 35 70 140 280 420 dr dr dr dr dr 820 821 822 824 826 35 wide range of applications - inverters, converters choppers, power supplies, etc. void free vacuum die soldering for maximum mechanical strength and heat dissipation (solder voids: typical < 2%, max. < 10% of die area) true soft recovery characteristic with no ringing, spikes, or overshoot high frequency: 250 khz fast recovery: typical 100ns - 150ns unmatched performance - minimal rfi/emi, reduced power losses, extremely cool operation increased power supply efficiency proprietary junction passivation for superior reliability and performance junction operating and storage temperature range t j, t stg -65 to +175 c notes: 1) both leads to heatsink, equal length looking for: MR820, mr821, mr822, mr824, mr826 replacements?
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