rds8__80xx general purpose rectifier diode powerex, inc., 200 hillis street, youngwood, pennsylvania 15697-1800 (724)925-7272 8000 amperes 2500 volts features: low on-state voltage hermetic ceramic package excellent surge and i 2 t ratings applications: dc power supplies ordering information input rectifiers plating supplies select the complete 12 digit part number using the table below. example: rds82280xxoo is a 2200v-8000a general purpose diode with a typical reverse recovery time of 25s. part voltage rating voltage code current rating current code reverse recovery lead code v drm -v rrm i tavg t rr rds8 2500v 25 8000a 80 xx oo 2400v 24 2200v 22 25s typical 2000v 20 revised: 916/2002 powerex general purpose rectifier diodes are designed with high locking voltage capability and low forward voltage drop to minimize conduction losses. these are packaged in hermetic, ceramic pow-r-disc packages which can be mounted using commercially available clamps and heatsinks or fully assembled to a variety of air or water cooled heat exchangers. a dia. c dia. a dia. b dia. d {e clamped} d abcd e fgh sym. inches mm .030 0.76 .140 3.56 anode marking cathode f dia. typ. g deep typ. 3.92 99.6 5.67 144 5.1 130 .080 2.03 case number rbs --- --- 1.0 - 1.1 25.4 - 28.0 nominal dimensions strike distance = .77 inch / 19.6 mm min. creepage distance = 1.18 inch / 30.0 mm min. all dimensions are reference page 1
rds8__80xx general purpose rectifier diode powerex, inc., 200 hillis street, youngwood, pennsylvania 15697-1800 (724)925-7272 8000 amperes 2500 volts absolute maximum ratings characteristic symbol rating units repetitive peak reverse voltage v rrm 2500 volts non-repetitive transient peak reverse voltage v rsm v rrm + 100 volts average on-state current, t c =90c i f(avg.) 8000 a rms on-state current, t c =90c i f(rms) 12566 a peak one cycle surge current, 60hz, v r =v rrm i fsm 100,000 a fuse coordination i 2 t, 60hz i 2 t 4.17e+07 a 2 s peak one cycle surge current, 50hz, v r =0v i fsm 92,500 a fuse coordination i 2 t, 50hz i 2 t 3.57e+07 a 2 s operating temperature tj -40 to+175 c storage temperature t stg. -50 to+200 c approximate weight 6.5 lb 2.95 kg mounting force 16,000 - 20,000 lbs 71.2 - 89.0 knewtons page 2
rds8__80xx general purpose rectifier diode powerex, inc., 200 hillis street, youngwood, pennsylvania 15697-1800 (724)925-7272 8000 amperes 2500 volts electrical characteristics, tj=25c unless otherwise specified rating characteristic symbol test conditions min typ max units repetitive peak reverse leakage current i rrm tj=175c, v rrm =rated 150 300 ma peak on-state voltage v fm tj=175c, i fm =4000a 0.82 v v fm model, low level v 0 tj=175c 0.654 v vfm = v o + r i fm r 15% i fm - i fm 3.82e-05 ? v fm model, high level v 0 tj=175c 0.786 v vfm = v o + r i fm r i fm - i fsm 3.27e-05 ? v fm model, 4-term a tj=175c 0.218 v fm = a + bln(i fm ) + b 15%i fm - i fsm 5.70e-02 c(i fm ) + d(i fm ) ? c 3.14e-05 d 8.51e-05 reverse recovery time t rr tj=25c, i fm =400a 25 s di r /dt = 25 a/s thermal characteristics rating characteristic symbol test conditions min typ max units thermal resistance junction to case r jc double side cooled 0.007 0.0075 c/watt case to sink r cs double side cooled 0.001 0.0015 c/watt thermal impedance model z jc double side cooled z jc (t) = (a( n )(1-exp(-t / tau ( n )))) where: n = 12 3 4 a(n ) = 1.426e-04 9.077e-04 2.373e-03 4.080e-03 t au(n) = 2.622e-03 2.313e-02 3.049e-01 3.600e+00 page 3
rds8__80xx general purpose rectifier diode powerex, inc., 200 hillis street, youngwood, pennsylvania 15697-1800 (724)925-7272 8000 amperes 2500 volts maximum transient thermal impedance 0.0e+00 1.0e-03 2.0e-03 3.0e-03 4.0e-03 5.0e-03 6.0e-03 7.0e-03 8.0e-03 0.01 0.1 1 10 100 time (sec) thermal impedance (c/watt) maximum on-state voltage drop 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 1000 10000 100000 ifm (a) vfm (v) tj = 175c power dissipation 0 4000 8000 12000 16000 0 2000 4000 6000 8000 10000 average fwd current (a) power dissipation (watts) 180 sine (1 ) 120 square (3 ) allowable case temperature 60 80 100 120 140 160 180 0 2000 4000 6000 8000 10000 average fwd current (a) case temperature (c) 180 sine (1 ) 120 square (3 ) page 4
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