bt138 series general description glass passivated triacs in a plastic symbol parameter max. max. max. unit envelope, intended for use in applications requiring high bt138- 500 600 800 bidirectional transient and blocking bt138- 500f 600f 800f voltage capability and high thermal bt138- 500g 600g 800g cycling performance. typical drm repetitive peak off-state 500 600 800 v applications include motor control, industrial and domestic lighting, t(rms) rms on-state current 12 12 12 a heating and static switching. tsm non-repetitive peak on-state 95 95 95 a current symbol limiting values limiting values in accordance with the absolute maximum system (iec 134). symbol parameter conditions min. max. unit -500 -600 -800 v drm repetitive peak off-state - 500 1 600 1 800 v voltages i t(rms) rms on-state current full sine wave; t mb 99 ?c - 12 a i tsm non-repetitive peak full sine wave; t j = 25 ?c prior to on-state current surge t = 20 ms - 95 a t = 16.7 ms - 105 a i 2 ti 2 t for fusing t = 10 ms - 45 a 2 s di t /dt repetitive rate of rise of i tm = 20 a; i g = 0.2 a; on-state current after di g /dt = 0.2 a/ m s triggering t2+ g+ - 50 a/ m s t2+ g- - 50 a/ m s t2- g- - 50 a/ m s t2- g+ - 10 a/ m s i gm peak gate current - 2 a v gm peak gate voltage - 5 v p gm peak gate power - 5 w p g(av) average gate power over any 20 ms period - 0.5 w t stg storage temperature -40 150 ?c t j operating junction - 125 ?c temperature t1 t2 g 1 although not recommended, off-state voltages up to 800v may be applied without damage, but the triac may switch to the on-state. the rate of rise of current should not exceed 15 a/ m s. to-220ab quick reference data voltages i v i 2014-6-10 1 www.kersemi.com
symbol parameter conditions min. typ. max. unit r th j-mb thermal resistance full cycle - - 1.5 k/w junction to mounting base half cycle - - 2.0 k/w r th j-a thermal resistance in free air - 60 - k/w junction to ambient static characteristics t j = 25 ?c unless otherwise stated symbol parameter conditions min. typ. max. unit bt138- ... ...f ...g i gt gate trigger current v d = 12 v; i t = 0.1 a t2+ g+ - 5 35 25 50 ma t2+ g- - 8 35 25 50 ma t2- g- - 10 35 25 50 ma t2- g+ - 22 70 70 100 ma i l latching current v d = 12 v; i gt = 0.1 a t2+ g+ - 7 40 40 60 ma t2+ g- - 20 60 60 90 ma t2- g- - 8 40 40 60 ma t2- g+ - 10 60 60 90 ma i h holding current v d = 12 v; i gt = 0.1 a - 6 30 30 60 ma v t on-state voltage i t = 15 a - 1.4 1.65 v v gt gate trigger voltage v d = 12 v; i t = 0.1 a - 0.7 1.5 v v d = 400 v; i t = 0.1 a; 0.25 0.4 - v t j = 125 ?c i d off-state leakage current v d = v drm(max) ; - 0.1 0.5 ma t j = 125 ?c dynamic characteristics t j = 25 ?c unless otherwise stated symbol parameter conditions min. typ. max. unit bt138- ... ...f ...g dv d /dt critical rate of rise of v dm = 67% v drm(max) ; 100 50 200 250 - v/ m s off-state voltage t j = 125 ?c; exponential waveform; gate open circuit dv com /dt critical rate of change of v dm = 400 v; t j = 95 ?c; - - 10 20 - v/ m s commutating voltage i t(rms) = 12 a; di com /dt = 5.4 a/ms; gate open circuit t gt gate controlled turn-on i tm = 16 a; v d = v drm(max) ;- - - 2 - m s time i g = 0.1 a; di g /dt = 5 a/ m s thermal resistances bt138 series 2014-6-10 2 www.kersemi.com
fig.1. maximum on-state dissipation, p tot , versus rms on-state current, i t(rms) , where a = conduction angle. fig.2. maximum permissible non-repetitive peak on-state current i tsm , versus pulse width t p , for sinusoidal currents, t p 20ms. fig.3. maximum permissible non-repetitive peak on-state current i tsm , versus number of cycles, for sinusoidal currents, f = 50 hz. fig.4. maximum permissible rms current i t(rms) , versus mounting base temperature t mb . fig.5. maximum permissible repetitive rms on-state current i t(rms) , versus surge duration, for sinusoidal currents, f = 50 hz; t mb 99?c. fig.6. normalised gate trigger voltage v gt (t j )/ v gt (25?c), versus junction temperature t j . 0 5 10 15 0 5 10 15 20 = 180 120 90 60 30 bt138 it(rms) / a ptot / w tmb(max) / c 125 117.5 110 102.5 95 1 -50 0 50 100 150 0 5 10 15 bt138 99 c tmb / c it(rms) / a 10us 100us 1ms 10ms 100ms 10 100 1000 bt138 t / s itsm / a t i tsm time i tj initial = 25 c max t di /dt limit t t2- g+ quadrant 0.01 0.1 1 10 0 5 10 15 20 25 bt138 surge duration / s it(rms) / a 1 10 100 1000 0 20 40 60 80 100 bt138 number of cycles at 50hz itsm / a t i tsm time i tj initial = 25 c max t -50 0 50 100 150 0.4 0.6 0.8 1 1.2 1.4 1.6 bt136 tj / c vgt(tj) vgt(25 c) bt138 series 2014-6-10 3 www.kersemi.com
fig.7. normalised gate trigger current i gt (t j )/ i gt (25?c), versus junction temperature t j . fig.8. normalised latching current i l (t j )/ i l (25?c), versus junction temperature t j . fig.9. normalised holding current i h (t j )/ i h (25?c), versus junction temperature t j . fig.10. typical and maximum on-state characteristic. fig.11. transient thermal impedance z th j-mb , versus pulse width t p . fig.12. typical commutation dv/dt versus junction temperature, parameter commutation di t /dt. the triac should commutate when the dv/dt is below the value on the appropriate curve for pre-commutation di t /dt. -50 0 50 100 150 0 0.5 1 1.5 2 2.5 3 bt138 tj / c t2+ g+ t2+ g- t2- g- t2- g+ igt(tj) igt(25 c) 0 0.5 1 1.5 2 2.5 3 0 10 20 30 40 bt138 vt / v it / a tj = 125 c tj = 25 c typ max vo = 1.175 v rs = 0.0316 ohms -50 0 50 100 150 0 0.5 1 1.5 2 2.5 3 triac tj / c il(tj) il(25 c) 0.001 0.01 0.1 1 10 bt138 tp / s zth j-mb (k/w) 10us 0.1ms 1ms 10ms 0.1s 1s 10s t p p t d bidirectional unidirectional -50 0 50 100 150 0 0.5 1 1.5 2 2.5 3 triac tj / c ih(tj) ih(25c) 0 50 100 150 1 10 100 1000 5.4 9.1 tj / c 7 dv/dt (v/us) 4.2 dicom/dt = 15 a/ms 12 off-state dv/dt limit bt138...g series bt138 series bt138...f series bt138 series 2014-6-10 4 www.kersemi.com
mechanical data dimensions in mm net mass: 2 g fig.13. to220ab; pin 2 connected to mounting base. notes 1. refer to mounting instructions for to220 envelopes. 2. epoxy meets ul94 v0 at 1/8". 10,3 max 3,7 2,8 3,0 3,0 max not tinned 1,3 max (2x) 123 2,4 0,6 4,5 max 5,9 min 15,8 max 1,3 2,54 2,54 0,9 max (3x) 13,5 min bt138 series 2014-6-10 5 www.kersemi.com
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