Page 1
BTA/BTB24, BTA25, BTA26
®
and T25 Series
SNUBBERLESS™ & STANDARD 25A TRIACS
MAIN FEATURES:
Symbol Value Unit
I
T(RMS)
V
DRM/VRRM
I
GT (Q1)
25 A
600 and 800 V
35 to 50 mA
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 heat ers, ind uction m otor
A1
A2
G
TO-220AB
Insulated
(BTA24)
A1
G
A2
A1
A2
G
A1
A2
G
D2PAK
(T25G)
A2
A1
A2
G
A2
TO-220AB
(BTB24)
starting circuits...or for phase co ntrol 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
RD91
(BTA25)
A1
A2
Insulated
(BTA26)
G
TOP3
provides voltage insulated tab (rated at 2500V
RMS) complying with UL s tandards (Fi le r ef.:
E81734).
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
I
T(RMS)
RMS on-state current (full sine wave) D²PAK
TO-220AB
RD91
TOP3 Ins.
Tc = 100°C
Tc = 90°C
25
TO-220AB Ins. Tc = 75°C
I
TSM
²
tI
I
dI/dt
V
DSM/VRSM
I
GM
P
G(AV)
T
stg
T
j
Non repetitive surge peak on-state
current (full cycle, Tj initial = 25°C)
²
t Value for fusing
Critical rate of rise of on-state current
= 2 x IGT , tr ≤ 100 ns
I
G
Non repetitive surge peak off-state
voltage
Peak gate current tp = 20 µs Tj = 125°C 4 A
Average gate power dissipation Tj = 125°C 1 W
Storage junction temperature range
Operating junction temperature range
F = 60 Hz t = 16.7 ms 260 A
F = 50 Hz t = 20 ms 250
tp = 10 ms 340
F = 120 Hz Tj = 125°C 50 A/µs
V
tp = 10 ms Tj = 25°C
DRM/VRRM
+ 100
- 40 to + 150
- 40 to + 125
September 2002 - Ed: 6A
A
A
V
°C
²
s
1/9
Page 2
BTA/BTB24, BTA25, BT A26 and T25 Series
ELECTRICAL CHARACTERISTICS (Tj = 25°C, unless otherwise specified)
■ SNUBBERLESS™ (3 Quadrants) T25-G, BTA/BTB24...W, BTA25...W, BTA26...W
Symbol Test Conditions Quadrant T25 BTA/BTB
T2535 CW B W
(1)
I
GT
V
V
I
H
GT
GD
(2)
I
L
V
= 12 V RL = 33 Ω
D
VD = V
= 500 mA
I
T
IG = 1.2 I
RL = 3.3 kΩ Tj = 125°C
DRM
GT
I - II - III MAX. 35 35 50
I - II - III MAX. 1.3 V
I - II - III MIN. 0.2
MAX. 50 50 75 mA
I - III MAX. 70 70 80 mA
II 80 80 100
dV/dt (2) V
= 67 % V
D
gate open Tj = 125°C
DRM
MIN. 500 500 1000 V/µs
(dI/dt)c (2) Without snubber Tj = 125°C MIN. 13 13 22 A/ms
■ STANDARD (4 Quadrants): BTB24...B, BTA25...B, BTA26...B
Symbol Test Conditions Quadrant Value Unit
I
GT
V
V
I
H
(1)
GT
GD
(2)
I
L
= 12 V RL = 33 Ω
V
D
VD = V
= 500 mA
I
T
IG = 1.2 I
RL = 3.3 kΩ Tj = 125°C
DRM
GT
I - II - III
IV
MAX.
ALL MAX. 1.3 V
ALL MIN.
MAX. 80 mA
I - III - IV MAX. 70 mA
50
100
0.2 V
II 160
dV/dt (2) V
= 67 % V
D
gate open Tj = 125°C
DRM
MIN. 500 V/µs
(dV/dt)c (2) (dI/dt)c = 13.3 A/ms Tj = 125°C MIN. 10 V/µs
Unit
mA
mA
V
STATIC CHARACTERISTICS
Symbol Test Conditions Value Unit
= 35 A tp = 380 µs
V
TM
V
(2)
to
(2)
R
d
I
DRM
I
RRM
Note 1: minimum IGT is guaranted at 5% of IGT max.
Note 2: for both polarities of A2 referenced to A1
TM
Threshold voltage Tj = 125°C MAX. 0.85 V
Dynamic resistance Tj = 125°C MAX. 16 mΩ
V
= V
DRM
RRM
I
(2)
Tj = 25°C MAX. 1.55 V
Tj = 25°C
Tj = 125°C 3 mA
MAX.
5µA
2/9
Page 3
BTA/BTB24, BTA25, BT A26 and T25 Series
THERMAL RESISTANCES
Symbol Parameter Value Unit
R
th(j-c)
Junction to case (AC)
TO-220AB Insulated 1.7
R
th(j-a)
Junction to ambient
S = 1 cm
²
TO-220AB Insulated
S: Copper surface under tab
PRODUCT SELECTOR
Voltage (xxx)
Part Number
600 V 800 V
BTB24-xxxB X X 50 mA Standard TO-220AB
BTA/BTB24-xxxBW X X 50 mA Snubberle ss TO-220AB
BTA/BTB24-xxxCW X X 35 mA Snubbe rle ss TO-220AB
BTA25-xxxB X X 50 mA Standard RD-91
BTA25-xxxBW X X 50 mA Snubberle ss RD-91
BTA25-xxxCW X X 35 mA Snubbe rle ss RD-91
BTA26-xxxB X X 50 mA Standard TOP3 Ins.
BTA26-xxxBW X X 50 mA Snubberle ss TOP3 Ins.
BTA26-xxxCW X X 35 mA Snubbe rle ss TOP3 Ins.
T2535-xxxG X X 35 mA Snubberle ss
Sensitivity Type
²
PAK
D
TO-220AB
RD91 (Insulated)
TOP3 Insulated
D²PAK
TOP3 Insulated 50
TO-220AB
0.8
1.1
45
60
Package
²
D
PAK
°C/W
°C/W
BTB: Non insulated TO-220AB package
ORDERING INFORMA T IO N
BT A 24 - 600 BW (RG)
TRIAC
SERIES
INSULATION:
A: insulated
B: non insulated
CURRENT:
24: 25A inTO-220AB
25: 25A in Rd91
26: 25A inTOP3
VOLTAGE:
600: 600V
800: 800V
SENSITIVITY &TYPE
B: 50mA STANDARD
BW: 50mA SNUBBERLESS
CW: 35mA SNUBBERLESS
PACKING MODE
Blank: Bulk
RG:Tube
3/9
Page 4
BTA/BTB24, BTA25, BT A26 and T25 Series
T 25 35 - 600 G (-TR)
TRIAC
SERIES
CURRENT:25A
SENSITIVITY:
35: 35mA
OTHER INFORMATION
VOLTAGE:
600: 600V
800: 800V
PACKAGE:
2
G: D PAK
PACKING MODE:
Blank:Tube
-TR:Tape & Reel
Part Number Marking Weight
Base
quantity
Packing
mode
BTA/BTB24-xxxyz BTA/BTB24xxxyz 2.3 g 250 Bulk
BTA/BTB24-xxxyzRG BTA/BTB24-xxxyz 2.3 g 50 Tube
BTA25-xxxyz BTA25xxxyz 20 g 25 Bulk
BTA26-xxxyz BTA26xxxyz 4.5 g 120 Bulk
T2535-xxxG T2535xxxG 1.5 g 50 Tube
T2535-xxxG-TR T2535xxxG 1.5 g 1000 Tape & reel
Note: xxx= v ol t age, y = sensitivit y, z = type
4/9
Page 5
BTA/BTB24, BTA25, BT A26 and T25 Series
2
Fig. 1: Maximum power dissipation versus RMS
on-state current (full cycle).
P (W)
30
25
20
15
10
5
0
0 5 10 15 20 25
IT(RMS) (A)
Fig. 2-2: D²PAK RMS on-state current versus
ambient temperature (pr inted circuit board FR4,
copper thickness: 35 µm), full cycle.
IT(RMS) (A)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0 25 50 75 100 125
Tamb(°C)
2
DPAK
(S=1cm )
2
Fig. 2-1: RMS on-state current versus case
temperature (full cycle).
IT(RMS) (A)
30
25
20
15
BTA24
BTA25/26
BTB/T25
10
5
0
0 25 50 75 100 125
Tc(°C)
Fig. 3: Relative variation of thermal impedance
versus pulse duration.
K=[Zth/Rth]
1E+0
Zth(j-c)
1E-1
1E-2
1E-3
1E-3 1E-2 1E-1 1E+0 1E+1 1E+2 5E+
Zth(j-a)
BTA/BTB24/T25
Zth(j-a)
BTA26
tp (s)
Fig. 4: On-state characteristics (maximum
values).
ITM (A)
300
100
10
1
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
Tj max
Tj=25°C
VTM (V)
Tj max.
Vto = 0.85V
Rd = 16 m
Ω
Fig. 5: Surge peak on-state current versus
number of cycles.
ITSM (A)
300
250
200
Non repetitive
Tj initial=25°C
150
Repetitive
100
50
0
1 10 100 1000
Tc=75°C
Number of cycles
t=20ms
One cycle
5/9
Page 6
BTA/BTB24, BTA25, BT A26 and T25 Series
0
0
2
2
2
5
0
Fig. 6: Non-repetitive surge peak on-state
current for a sinusoidal pulse with width
tp < 10ms, and corresponding value of I²t.
ITSM (A), I²t (A²s)
3000
dI/dt limitation:
1000
100
50A/µs
tp (ms)
0.01 0.10 1.00 10.00
Tj initial=25°C
ITSM
I²t
Fig. 8: Relative variation of critical rate of
decrease of main current versus (dV/dt)c (typical
values).
(dI/dt)c [(dV/dt)c] / Specified (dI/dt)c
.4
.2
.0
1.8
1.6
1.4
B
1.2
1.0
0.8
0.6
0.4
0.1 1.0 10.0 100.
(dV/dt)c (V/µs)
BW/CW/T2535
Fig. 7: Relative variation of gate trigger current,
holding current and latching current versus
junction temperature (typical values).
IGT,IH,IL[Tj] / IGT,IH,IL [Tj=25°C]
2.5
2.0
IGT
1.5
1.0
IH & IL
0.5
Tj(°C)
0.0
-40 -20 0 20 40 60 80 100 120 14
Fig. 9: Relative variation of critical rate of
decrease of main current versus junction
temperature.
(dI/dt)c [Tj] / (dI/dt)c [Tj specified]
6
5
4
3
2
1
0
0 25 50 75 100 12
Tj (°C)
Fig. 10: D²PAK Thermal resistance junction to
ambient versus copper surface under tab (printed
circuit board FR4, copper thickness: 35 µ m).
Rth(j-a) (°C/W)
0
0
0
0
0
0
0
10
0
0 4 8 12 16 20 24 28 32 36 4
6/9
S(cm²)
D²PAK
Page 7
PACKAGE MECHANICAL DATA
D²PAK (Plastic)
BTA/BTB24, BTA25, BT A26 and T25 Series
DIMENSIONS
A
L2
L
L3
E
B2
B
G
2.0 MIN.
FLAT ZONE
C2
A1
C
A2
FOOTPRINT DIMENSIO NS (in millimeters)
D²PAK (Plastic)
V2
REF .
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A 4.30 4.60 0.169 0.181
A1 2.49 2.69 0.098 0.106
D
A2 0.03 0.23 0.001 0.009
B 0.70 0.93 0.027 0.037
B2 1.25 1.40 0.048 0.055
C 0.45 0.60 0.017 0.024
C2 1.21 1.36 0.047 0.054
R
D 8.95 9.35 0.352 0.368
E 10.00 10.28 0.393 0.405
G 4.88 5.28 0.192 0.208
L 15.00 15.85 0.590 0.624
L2 1.27 1.40 0.050 0.055
L3 1.40 1.75 0.055 0.069
R 0.40 0.016
V2 0° 8° 0° 8°
10.30
8.90
16.90
5.08
1.30
3.70
7/9
Page 8
BTA/BTB24, BTA25, BT A26 and T25 Series
PACKAGE MECHANICAL DATA
RD91 (Plastic)
L2 L1
B2
C
C2
N2
E3
A2
B1
C1
A1
N1
B
F
I
A
DIMENSIONS
REF .
Millimeters Inches
Min. Max. Min. Max.
A 40.00 1.575
A1 29.90 30.30 1.177 1.193
A2 22.00 0.867
B 27.00 1.063
B1 13.50 16.50 0.531 0.650
B2 24.00 0.945
C 14.00 0.551
C1 3.50 0.138
C2 1.95 3.00 0.077 0.118
E3 0.70 0.90 0.027 0.035
F 4.00 4.50 0.157 0.177
I 11.20 13.60 0.441 0.535
L1 3.10 3.50 0.122 0.138
L2 1.70 1.90 0.067 0.075
N1 33° 43° 33° 43°
N2 28° 38° 28° 38°
PACKAGE MECHANICAL DATA
TOP3 (Plastic)
DIMENSIONS
REF .
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A 4.4 4.6 0.173 0.181
B 1.45 1.55 0.057 0.061
C 14.35 15.60 0.565 0.614
D 0.5 0.7 0.020 0.028
E 2.7 2.9 0.106 0.114
F 15.8 16.5 0.622 0.650
G 20.4 21.1 0.815 0.831
H 15.1 15.5 0.594 0.610
J 5.4 5.65 0.213 0.222
K 3.4 3.65 0.134 0.144
L 4.08 4.17 0.161 0.164
P 1.20 1.40 0.047 0.055
R 4.60 0.181
8/9
Page 9
PACKAGE MECHANICAL DATA
TO-220AB (Plastic)
BTA/BTB24, BTA25, BT A26 and T25 Series
DIMENSIONS
B
L
I
A
C
b2
F
REF.
A 15.20 15.90 0.598 0.625
a1 3.75 0.147
a2 13.00 14.00 0.511 0.551
B 10.00 10.40 0.393 0.409
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
b1 0.61 0.88 0.024 0.034
l4
b2 1.23 1.32 0.048 0.051
C 4.40 4.60 0.173 0.181
a1
l3
l2
a2
c2
c1 0.49 0.70 0. 019 0.027
c2 2.40 2.72 0. 094 0.107
e 2.40 2.70 0.094 0.106
F 6.20 6.60 0. 244 0.259
I 3.75 3.85 0. 147 0.151
I4 15.80 16 .40 16.80 0.622 0.646 0.661
b1
e
M
c1
L 2.65 2.95 0.104 0.116
l2 1.14 1.70 0. 044 0.066
l3 1.14 1.70 0. 044 0.066
M 2.60 0.102
Information furnished is believed to be ac curate and reli able. Howev er, STMicroel ectronic s assumes no res ponsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
by implic ation or otherwise under any patent or patent rights of STMi croelect ronics. Specifications mentioned in thi s publica tion are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authoriz ed for use as critical components in lif e support dev i ces or systems without express written approval of STMi croelectronics.
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