Datasheet

Philips Semiconductors Product specification
Triacs BT138 series
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
5.49.1
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
September 1997 4 Rev 1.200