parameter max. units v r cathode-to-anode voltage 1200 v i f @ t c = 25c continuous forward current i f @ t c = 100c continuous forward current 8.0 i fsm single pulse forward current 130 i frm maximum repetitive forward current 32 i as ? maximum single pulse avalanche current 8.0 p d @ t c = 25c maximum power dissipation 73.5 p d @ t c = 100c maximum power dissipation 29 t j operating junction and t stg storage temperature range pd -2.365a ? ultrafast recovery ? ultrasoft recovery ? very low i rrm ? very low q rr ? guaranteed avalanche ? specified at operating conditions benefits ? reduced rfi and emi ? reduced power loss in diode and switching transistor ? higher frequency operation ? reduced snubbing ? reduced parts count features description international rectifier's hfa08pb120 is a state of the art center tap ultra fast recovery diode. employing the latest in epitaxial construction and advanced processing techniques it features a superb combination of characteristics which result in performance which is unsurpassed by any rectifier previously available. with basic ratings of 1200 volts and 8 amps continuous current, the hfa08pb120 is especially well suited for use as the companion diode for igbts and mosfets. in addition to ultra fast recovery time, the hexfred product line features extremely low values of peak recovery current (i rrm ) and does not exhibit any tendency to "snap-off" during the t b portion of recovery. the hexfred features combine to offer designers a rectifier with lower noise and significantly lower switching losses in both the diode and the switching transistor. these hexfred advantages can help to significantly reduce snubbing, component count and heatsink sizes. the hexfred hfa08pb120 is ideally suited for applications in power supplies and power conversion systems (such as inverters), motor drives, and many other similar applications where high speed, high efficiency is needed. ultrafast, soft recovery diode hexfred tm hfa08pb120 absolute maximum ratings -55 to +150 w a c 5/12/97 v r = 1200v v f (typ.)* = 2.4v i f(av) = 8.0a q rr (typ.)= 140nc i rrm (typ.) = 4.5a t rr (typ.) = 28ns di (rec)m /dt (typ.)* = 85a/s * 125c to-247ac (modified)
hfa08pb120 parameter min. typ. max. units t lead ? lead temperature ???? ???? 300 c r q jc thermal resistance, junction to case ???? ???? 1.7 r q ja ? thermal resistance, junction to ambient ???? ???? 40 r q cs ? thermal resistance, case to heat sink ???? 0.25 ???? ???? 6.0 ???? g ???? 0.21 ???? (oz) 6.0 ???? 12 kg-cm 5.0 ???? 10 lbf?in parameter min. typ. max. units test conditions t rr reverse recovery time ??? 28 ??? i f = 1.0a, di f /dt = 200a/s, v r = 30v t rr1 ??? 63 95 ns t j = 25c t rr2 ??? 106 160 t j = 125c i f = 8.0a i rrm1 peak recovery current ??? 4.5 8.0 t j = 25c i rrm2 ??? 6.2 11 t j = 125c v r = 200v q rr1 reverse recovery charge ??? 140 380 t j = 25c q rr2 ??? 335 880 t j = 125c di f /dt = 200a/s di (rec)m /dt1 peak rate of fall of recovery current ??? 133 ??? t j = 25c di (rec)m /dt2 during t b ??? 85 ??? t j = 125c parameter min. typ. max. units test conditions v br cathode anode breakdown voltage 1200 ??? ??? v i r = 100a ??? 2.6 3.3 i f = 8.0a ??? 3.4 4.3 v i f = 16a ??? 2.4 3.1 i f = 8.0a, t j = 125c ??? 0.31 10 v r = v r rated ??? 135 1000 t j = 125c, v r = 0.8 x v r rated d rated c t junction capacitance ??? 11 20 pf v r = 200v measured lead to lead 5mm from package body electrical characteristics @ t j = 25c (unless otherwise specified) dynamic recovery characteristics @ t j = 25c (unless otherwise specified) a/s nc a l s series inductance ??? 8.0 ??? nh see fig. 3 see fig. 2 see fig. 1 thermal - mechanical characteristics see fig. 5, 10 see fig. 6 see fig. 7 see fig. 8 k/w v fm max forward voltage a max reverse leakage current i rm wt weight mounting torque ? l=100h, duty cycle limited by max t j ? 0.063 in. from case (1.6mm) for 10 sec ? typical socket mount ? mounting surface, flat, smooth and greased
hfa08pb120 fig. 4 - maximum thermal impedance z thjc characteristics fig. 2 - typical reverse current vs. reverse voltage fig. 3 - typical junction capacitance vs. reverse voltage fig. 1 - maximum forward voltage drop vs. instantaneous forward current instantaneous forward current - i f (a) reverse current - i r (a) junction capacitance -c t (pf)
hfa08pb120 fig. 7 - typical stored charge vs. di f /dt, (per leg) fig. 8 - typical di (rec)m /dt vs. di f /dt, (per leg) fig. 5 - typical reverse recovery vs. di f /dt, (per leg) fig. 6 - typical recovery current vs. di f /dt, (per leg) di (rec) m/dt- (a /s) qrr- (nc) irr- ( a) trr- (nc)
hfa08pb120 4. q rr - area under curve defined by t rr and i rrm t rr x i rrm q rr = 2 5. di (rec)m /dt - peak rate of change of current during t b portion of t rr v (aval) r(r at ed) i l(pk) v de cay time fig. 11 - avalanche test circuit and waveforms fig. 10 - reverse recovery waveform and definitions fig. 9 - reverse recovery parameter test circuit t a t b t rr q rr i f i rrm i rrm 0.5 di(rec)m/dt 0.75 i rrm 5 4 3 2 0 1 di /dt f 1. di f /dt - rate of change of current through zero crossing 2. i rrm - peak reverse recovery current 3. trr - reverse recovery time measured from zero crossing point of negative going i f to point where a line passing through 0.75 i rrm and 0.50 i rrm extrapolated to zero current reverse recovery circuit irfp250 d.u.t. l = 70 h v = 200v r 0.01 w g d s dif/dt adjust current monitor high-speed switch dut rg = 25 ohm + free-w heel diode vd = 50v l = 100 h
hfa08pb120 world headquarters: 233 kansas st., el segundo, california 90245, tel: (310) 322 3331 european headquarters: hurst green, oxted, surrey rh8 9bb, uk tel: ++ 44 1883 732020 ir canada: 7321 victoria park ave., suite 201, markham, ontario l3r 2z8, tel: (905) 475 1897 ir germany: saalburgstrasse 157, 61350 bad homburg tel: ++ 49 6172 96590 ir italy: via liguria 49, 10071 borgaro, torino tel: ++ 39 11 451 0111 ir far east: k&h bldg., 2f, 30-4 nishi-ikebukuro 3-chome, toshima-ku, tokyo japan 171 tel: 81 3 3983 0086 ir southeast asia: 315 outram road, #10-02 tan boon liat building, singapore 0316 tel: 65 221 8371 http://www.irf.com/ data and specifications subject to change without notice. 5/97 conforms to jedec outline to-247ac(modified) dimensions in millimeters and inches
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