Philips Semiconductors

Product specification

Triacs

BT138B series

Fig.7. Normalised gate trigger current

I

Fig.8. Normalised latching current I

versus junction temperature T

Fig.9. Normalised holding current I

versus junction temperature T

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

Fig.11. Transient thermal impedance Z

pulse width t

Fig.12. Typical commutation dV/dt versus junction

temperature, parameter commutation dI

should commutate when the dV/dt is below the value

on the appropriate curve for pre-commutation dI

-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

October 1997

4

Rev 1.200