BYD77AA - byd77ga ultra fast low-loss controlled avalanche rectifiers prv : 50 - 400 volts io : 2.0 am p eres features : * glass passivated j unction chip * hi g h maximum operatin g temperature * low leaka g e current * excellent stabilit y * smallest surface mount rectifier outline * pb / rohs free mechanical data : * case : sma molded plasti c * epox y : ul94v-o rate flame retardan t * lead : lead formed for surface mount * polarit y : color band denotes cathode en d * mountin g position : an y * wei g ht : 0.067 g ram maximum ratings and electrical characteristics ratin g at 25 c ambient temperature unless otherwise specified byd byd byd byd byd byd byd 77aa 77ba 77ca 77da 77ea 77fa 77ga maximum repetitive peak reverse voltage v rrm 50 100 150 200 250 300 400 v maximum continuous reverse voltage v r 50 100 150 200 250 300 400 v min. reverse avalanche breakdown voltage @ i r = 0.1 ma v (br)r-min 55 110 165 220 275 330 440 v maximum average forward current maximum non-repetitive peak forward surge current (note 3) i fsm a maximum repetitive peak forward current at ttp = 105 c i frm a maximum forward voltage at i f = 1.0 a ; t j = 25 c v f v maximum reverse current at v r =v rrmmax t j = 25 c i r a t j = 165 c i r(h) a maximum reverse recovery time (note 4) trr ns thermal resistance from junction to tie-point rth j-tp k / w thermal resistance from junction to ambient (note 5) rth j-a k / w junction temperature range t j c storage temperature range t stg c notes : (1) ttp = 105 c; see fig. 1and 2; averaged over any 20 ms period; see also fig.5 and 6 (2) tamb = 60 c; pcb mounting ; see fig. 3 and 4; averaged over any 20 ms period; see also fig.5 and 6 (3) t=10ms half sine wave; tj = tjmax prior to surge; v r = v rrmmax (4) reverse recovery test conditions : i f = 0.5 a, i r = 1.0 a, irr = 0.25 a. (5) device mounted on an epoxy-glass printed-circuit board, 1.5 mm thick; thickness of cu-layer 40 m. page 1 of 3 rev. 00 : february 13, 2008 unit 15 13 symbol rating 25 2.0 (1) 1.85 (1) i f(av) a 0.85 (2) 0.80 (2) - 65 to + 175 0.98 1.05 1.0 100 25 50 30 150 - 65 to + 175 2.0 0.2 2.1 0.2 sma (do-214ac) 1.2 0.2 5.0 0.15 4.5 0.15 2.6 0.15 dimensions in millimeters 1.1 0.3 0.2 0.07 iatf 0060636 sgs th07/1033 tw00/17276em th97/10561qm
fig.1 - maximum permissible average forward fig.2 - maximum permissible average forward current as a function of tie-point temperature current as a function of tie-point temperature 0 100 200 0 100 200 tie-point temperature, ttp ( c) tie-point temperature, ttp ( c) fig.3 - maximum permissible average forward fig.4 - maximum permissible average forward current as a function of ambient temperature current as a function of ambient temperature 0 100 200 0 100 200 ambient temperature, tamp ( c) ambient temperature, tamp ( c) fig.5 - maximum steady state power dissipation fig.6 - maximum steady state power dissipation as a function of average forward current as a function of average forward current 0 1 2 0 1 2 page 2 of 3 rev. 00 : february 13, 2008 rating and characteristic curves ( BYD77AA - byd77ga ) 4 3 2 1 0 average forward output current, i f(av) (a) 0 4 3 2 1 average forward output current, i f(av) (a) average forward output current, i f(av) (a) 0 average forward output current, i f(av) (a) 0 0.4 0.8 1.2 0.4 0.8 1.2 0.2 0.6 1.0 1.0 0.6 0.2 average forward output current, i f(av) (a) a = i f(rms) /i f(av) ; v r = v rrmmax ; = 0.5 power dissipation, p d (w) power dissipation, p d (w) average forward output current, i f(av) (a) a = i f(rms) /i f(av) ; v r = v rrmmax ; = 0.5 0 1 2 2 1 0 a =3 2.5 2 1.57 1.42 a =3 2.5 2 1.57 1.42 BYD77AA to da BYD77AA to da BYD77AA to da byd77ea to ga byd77ea to ga byd77ea to ga iatf 0060636 sgs th07/1033 tw00/17276em th97/10561qm
rating and characteristic curves ( BYD77AA- byd77ga ) fig.7 - forward current as function fig.8 - forward current as function of forward voltage of forward voltage 0 1 2 0 1 2 3 fig.9 - reverse current as function of junction temperature page 3 of 3 rev. 00 : february 13, 2008 1000 100 1 10 100 0 200 junction temperature, t j ( c) reverse current, i r ( a) v r =v rrmmax forward current, i f (a) forward voltage, v f (v) t j = 25 c 0 10 8 6 4 2 forward current, i f (a) forward voltage, v f (v) 0 10 8 6 4 2 t j = 25 c BYD77AA to da byd77ea to ga iatf 0060636 sgs th07/1033 tw00/17276em th97/10561qm
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