BT138B datasheet(4/6 Pages) PHILIPS

4 / 6 page

Philips Semiconductors

Product specification

Triacs

BT138B series

Fig.7. Normalised gate trigger current

GT(Tj)/ IGT(25˚C), versus junction temperature Tj.

Fig.8. Normalised latching current I

L(Tj)/ IL(25˚C),

versus junction temperature T

Fig.9. Normalised holding current I

H(Tj)/ IH(25˚C),

versus junction temperature T

Fig.10. Typical and maximum on-state characteristic.

Fig.11. Transient thermal impedance Z

th j-mb, versus

pulse width t

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

100

150

0.5

1.5

2.5

BT138

Tj / C

T2+ G+

T2+ G-

T2- G-

T2- G+

IGT(Tj)

IGT(25 C)

0.5

1.5

2.5

BT138

VT / V

IT / A

Tj = 125 C

Tj = 25 C

typ

max

Vo = 1.175 V

Rs = 0.0316 Ohms

-50

100

150

0.5

1.5

2.5

TRIAC

Tj / C

IL(Tj)

IL(25 C)

0.001

0.01

0.1

BT138

tp / s

Zth j-mb (K/W)

10us

0.1ms

1ms

10ms

0.1s

10s

bidirectional

unidirectional

-50

100

150

0.5

1.5

2.5

TRIAC

Tj / C

IH(Tj)

IH(25C)

100

150

100

1000

5.4

9.1

Tj / C

dV/dt (V/us)

4.2

dIcom/dt =

15 A/ms

off-state dV/dt limit

BT138...G SERIES

BT138 SERIES

BT138...F SERIES

October 1997

Rev 1.200

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