rdk8__40xx general purpose rectifier diode powerex, inc., 200 hillis street, youngwood, pennsylvania 15697-1800 (724)925-7272 4000 amperes 6000 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: rdk86040xxoo is a 6000v-4000a 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 6000v 60 4000a 40 xx oo 5600v 56 5200v 52 25s typical 4800v 48 revised: 4/7/2003 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. abcd e fg sym. inches mm .030 0.76 .140 3.56 a n o d e marking cathod e f dia. typ. g deep typ. all dimensions are reference case number rdk 3.91 99.3 5.66 144 5.18 132 .070 1.78 1.400/1.470 35.5/37.4 nominal dimensions strike distance = 1.24 inch / 31.5 mm min. creepage distance = 1.64 inch / 41.6 mm min. page 1
rdk8__40xx general purpose rectifier diode powerex, inc., 200 hillis street, youngwood, pennsylvania 15697-1800 (724)925-7272 4000 amperes 6000 volts absolute maximum ratings characteristi c symbol rating units repetitive peak reverse voltage v rrm 6000 volts non-repetitive transient peak reverse voltage v rsm v rrm + 100 volts average on-state current, t c 68c i f(avg.) 4000 a rms on - state current, t c 68c i f(rms) 6283 a peak one cycle surge current, 60hz, v r =v rrm i fsm 60,000 a fuse coordination i 2 t, 60hz i 2 t 1.50e+07 a 2 s peak one cycle surge current, 50hz, v r =0v i fsm 55,500 a fuse coordination i 2 t, 50hz i 2 t 1.28e+07 a 2 s operating temperature tj -40 to+150 c storage temperature t stg. -50 to+190 c approximate weight 6.5 lb 2.95 kg mounting force 16,000 - 20,000 lbs 71.2 - 89.0 knewtons page 2
rdk8__40xx general purpose rectifier diode powerex, inc., 200 hillis street, youngwood, pennsylvania 15697-1800 (724)925-7272 4000 amperes 6000 volts electrical characteristics, tj=25c unless otherwise specified rating characteristic symbol test conditions min typ max units r epe titi ve p ea k r everse leakage current i rrm tj=150c, v rrm =rated 150 300 ma peak on-state voltage v fm tj=150c, i fm = 4000 a 1.65 v v fm model, low level v 0 tj=150c 1.13 v vfm = v o + r? i fm r 15% i fm - ?i fm 1.17e-04 ? v fm model, high level v 0 tj=150c 1.44 v vfm = v o + r? i fm r ?i fm - i fsm 9.12e-05 ? v fm model, 4-term a tj=150c 0.220 v fm = a + b?ln(i fm ) + b 15%i fm - i fsm 1.25e-01 c?(i fm ) + d?(i fm ) ? c 8.50e-05 d 8.00e-04 reverse recovery time t rr tj=25c, i fm =400a 25 s di r /dt = 25 a/s thermal characteristics rating characteristi c symbol test conditions min typ max units thermal resistance junction to case r jc double side cooled 0.0075 0.0090 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 2.600e-03 5.350e-03 t au(n) = 2.622e-03 2.313e-02 3.049e-01 3.396e+00 page 3
rdk8__40xx general purpose rectifier diode powerex, inc., 200 hillis street, youngwood, pennsylvania 15697-1800 (724)925-7272 4000 amperes 6000 volts maximum transient thermal impedance 0.0e+00 2.0e-03 4.0e-03 6.0e-03 8.0e-03 1.0e-02 0.01 0.1 1 10 100 time (sec) thermal impedance (c/watt) maximum on-state voltage drop 1.00 1.50 2.00 2.50 3.00 3.50 4.00 1000 10000 100000 ifm (a) vfm (v) tj = 150c maximum on-state power dissipation 0 2000 4000 6000 8000 10000 0 1000 2000 3000 4000 5000 iavg (a) pavg (watts) sinusoidal 60 90 120 180 0 180 360 conduction angle maximum allowable case temperature 60 80 100 120 140 160 0 1000 2000 3000 4000 5000 iavg (a) tc (c) sinusoidal waveform 60 90 120 180 0 180 360 conduction angle maximum on-state power dissipation 0 2000 4000 6000 8000 10000 12000 14000 0 2000 4000 6000 8000 iavg (a) pavg (watts) square waveform 60 90 120 180 0 180 360 conduction angle 360 maximum allowable case temperature 60 80 100 120 140 160 0 1000 2000 3000 4000 5000 iavg (a) tc (c) square waveform 60 90 120 180 0 180 360 conduction angle 360 page 4
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