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
BTA/BTB24, BTA25, BTA26
and T25 Series
SNUBBERLESS & STANDARD 25A TRIACS
September 2000 - Ed: 3
MAIN FEATURES:
DESCRIPTION
Available either in through-hole of surface and T25
mount packages, the BTA/BTB24-25-26 triac
series is suitable for general purpose AC power
switching. They can be used as an ON/OFF
function in applications such as static relays,
heating regulation, water heaters, induction motor
starting circuits...or for phase control operation in
high power motor speed controllers, soft start
circuits...The snubberless versions (BTA/BTB...W
and T25 series) are specially recommended for
use on inductive loads, thanks to their high
commutation performances.
By using an internal ceramic pad, the BTA series
provides voltage insulated tab (rated at 2500V
RMS) complying with UL standards (File ref.:
E81734).
Symbol Value Unit
I
T(RMS)
25 A
V
DRM
/V
RRM
600 and 800 V
I
GT (Q
1
) 35 to 50 mA
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
I
T(RMS)
RMS on-state current (full sine wave)
D

PAK
TO-220AB
Tc = 100°C
25
A
RD91
TOP3 Ins.
Tc = 90°C
TO-220AB Ins. Tc = 75°C
I
TSM
Non repetitive surge peak on-state
current (full cycle, Tj initial = 25°C)
F = 60 Hz t = 16.7 ms 260 A
F = 50 Hz t = 20 ms 250
I

tI

t Value for fusing
tp = 10 ms 450 A

s
dI/dt
Critical rate of rise of on-state current
I
G
=2xI
GT
,tr≤100 ns
F = 120 Hz Tj = 125°C50 A/µs
V
DSM
/V
RSM
Non repetitive surge peak off-state
voltage
tp = 10 ms Tj = 25°C
V
DRM
/V
RRM
+ 100
V
I
GM
Peak gate current tp = 20 µs Tj = 125°C4 A
P
G(AV)
Average gate power dissipation Tj = 125°C1 W
T
stg
T
j
Storage junction temperature range
Operating junction temperature range
- 40 to + 150
- 40 to + 125
°C
G
A2
A1
G
A2
A2
A1
G
A2
A2
A1
TO-220AB
(BTB24)
TO-220AB
Insulated
(BTA24)
TOP3
Insulated
(BTA26)
A1
A2
G
A2
A2
G
A1
A2
A1
G
D
2
PAK
(T25G)
RD91
(BTA25)