1/9
BTA/BTB24, BTA25, BTA26
and T25 Series
SNUBBERLESSTM & STANDARD
25A TRIAC
S
September 2002 - Ed: 6A
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
RM S) 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)
DPAK
TO-220AB
Tc = 100C
25
A
RD91
TOP3 Ins.
Tc = 90C
TO-220AB Ins.
Tc = 75C
I
TSM
Non repetitive surge peak on-state
current (full cycle, Tj initial = 25C)
F = 60 Hz
t = 16.7 ms
260
A
F = 50 Hz
t = 20 ms
250
I
t
I
t Value for fusing
tp = 10 ms
340
A
s
dI/dt
Critical rate of rise of on-state current
I
G
= 2 x I
GT
, tr
100 ns
F = 120 Hz
Tj = 125C
50
A/s
V
DSM
/V
RSM
Non repetitive surge peak off-state
voltage
tp = 10 ms
Tj = 25C
V
DRM
/V
RRM
+ 100
V
I
GM
Peak gate current
tp = 20 s
Tj = 125C
4
A
P
G(AV)
Average gate power dissipation
Tj = 125C
1
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
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)
BTA/BTB24, BTA25, BTA26 and T25 Series
2/9
ELECTRICAL CHARACTERISTICS (Tj = 25C, unless otherwise specified)
s
SNUBBERLESSTM (3 Quadrants) T25-G, BTA/BTB24...W, BTA25...W, BTA26...W
s
STANDARD (4 Quadrants): BTB24...B, BTA25...B, BTA26...B
STATIC CHARACTERISTICS
Note 1: minimum IGT is guaranted at 5% of IGT max.
Note 2: for both polarities of A2 referenced to A1
Symbol
Test Conditions
Quadrant
T25
BTA/BTB
Unit
T2535
CW
BW
I
GT
(1)
V
D
= 12 V R
L
= 33
I - II - III
MAX.
35
35
50
mA
V
GT
I - II - III
MAX.
1.3
V
V
GD
V
D
= V
DRM
R
L
= 3.3 k
Tj = 125C
I - II - III
MIN.
0.2
V
I
H
(2)
I
T
= 500 mA
MAX.
50
50
75
mA
I
L
I
G
= 1.2 I
GT
I - III
MAX.
70
70
80
mA
II
80
80
100
dV/dt (2)
V
D
= 67 % V
DRM
gate open Tj = 125C
MIN.
500
500
1000
V/s
(dI/dt)c (2) Without snubber Tj = 125C
MIN.
13
13
22
A/ms
Symbol
Test Conditions
Quadrant
Value
Unit
I
GT
(1)
V
D
= 12 V R
L
= 33
I - II - III
IV
MAX.
50
100
mA
V
GT
ALL
MAX.
1.3
V
V
GD
V
D
= V
DRM
R
L
= 3.3 k
Tj = 125C
ALL
MIN.
0.2
V
I
H
(2)
I
T
= 500 mA
MAX.
80
mA
I
L
I
G
= 1.2 I
GT
I - III - IV
MAX.
70
mA
II
160
dV/dt (2)
V
D
= 67 % V
DRM
gate open Tj = 125C
MIN.
500
V/s
(dV/dt)c (2) (dI/dt)c = 13.3 A/ms Tj = 125C
MIN.
10
V/s
Symbol
Test Conditions
Value
Unit
V
TM
(2)
I
TM
= 35 A tp = 380 s
Tj = 25C
MAX.
1.55
V
V
to
(2)
Threshold voltage
Tj = 125C
MAX.
0.85
V
R
d
(2)
Dynamic resistance
Tj = 125C
MAX.
16
m
I
DRM
I
RRM
V
DRM
= V
RRM
Tj = 25C
MAX.
5
A
Tj = 125C
3
mA
BTA/BTB24, BTA25, BTA26 and T25 Series
3/9
THERMAL RESISTANCES
S: Copper surface under tab
PRODUCT SELECTOR
BTB: Non insulated TO-220AB package
ORDERING INFORMATION
Symbol
Parameter
Value
Unit
R
th(j-c)
Junction to case (AC)
D
PAK
TO-220AB
0.8
C/W
RD91 (Insulated)
TOP3 Insulated
1.1
TO-220AB Insulated
1.7
R
th(j-a)
Junction to ambient
S = 1 cm
D
PAK
45
C/W
TOP3 Insulated
50
TO-220AB
60
TO-220AB Insulated
Part Number
Voltage (xxx)
Sensitivity
Type
Package
600 V
800 V
BTB24-xxxB
X
X
50 mA
Standard
TO-220AB
BTA/BTB24-xxxBW
X
X
50 mA
Snubberless
TO-220AB
BTA/BTB24-xxxCW
X
X
35 mA
Snubberless
TO-220AB
BTA25-xxxB
X
X
50 mA
Standard
RD-91
BTA25-xxxBW
X
X
50 mA
Snubberless
RD-91
BTA25-xxxCW
X
X
35 mA
Snubberless
RD-91
BTA26-xxxB
X
X
50 mA
Standard
TOP3 Ins.
BTA26-xxxBW
X
X
50 mA
Snubberless
TOP3 Ins.
BTA26-xxxCW
X
X
35 mA
Snubberless
TOP3 Ins.
T2535-xxxG
X
X
35 mA
Snubberless
D
PAK
BT A 24 - 600 BW (RG)
TRIAC
SERIES
INSULATION:
A: insulated
B: non insulated
CURRENT:
24: 25A in TO-220AB
25: 25A in Rd91
26: 25A in TOP3
SENSITIVITY & TYPE
B: 50mA STANDARD
BW: 50mA SNUBBERLESS
CW: 35mA SNUBBERLESS
VOLTAGE:
600: 600V
800: 800V
PACKING MODE
Blank: Bulk
RG: Tube
BTA/BTB24, BTA25, BTA26 and T25 Series
4/9
OTHER INFORMATION
Note: xxx= voltage, y = sensitivity, z = type
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
T 25 35 - 600 G (-TR)
TRIAC
SERIES
SENSITIVITY:
35: 35mA
VOLTAGE:
600: 600V
800: 800V
CURRENT: 25A
PACKAGE:
G: D PAK
2
PACKING MODE:
Blank: Tube
-TR: Tape & Reel
BTA/BTB24, BTA25, BTA26 and T25 Series
5/9
Fig. 1: Maximum power dissipation versus RMS
on-state current (full cycle).
Fig. 2-1: RMS on-state current versus case
temperature (full cycle).
Fig. 2-2: DPAK RMS on-state current versus
ambient temperature (printed circuit board FR4,
copper thickness: 35
m), full cycle.
Fig. 3: Relative variation of thermal impedance
versus pulse duration.
Fig. 4: On-state characteristics (maximum
values).
Fig. 5: Surge peak on-state current versus
number of cycles.
0
5
10
15
20
25
0
5
10
15
20
25
30
IT(RMS) (A)
P (W)
0
25
50
75
100
125
0
5
10
15
20
25
30
Tc(C)
IT(RMS) (A)
BTA24
BTB/T25
BTA25/26
0
25
50
75
100
125
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Tamb(C)
IT(RMS) (A)
D PAK
(S=1cm )
2
2
1E-3
1E-2
1E-1
1E+0
1E+1
1E+2 5E+2
1E-3
1E-2
1E-1
1E+0
tp (s)
K=[Zth/Rth]
Zth(j-c)
Zth(j-a)
BTA/BTB24/T25
Zth(j-a)
BTA26
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
1
10
100
300
VTM (V)
ITM (A)
Tj=25C
Tj max
Tj max.
Vto = 0.85 V
Rd = 16 m
1
10
100
1000
0
50
100
150
200
250
300
Number of cycles
ITSM (A)
Non repetitive
Tj initial=25C
Repetitive
Tc=75C
One cycle
t=20ms
BTA/BTB24, BTA25, BTA26 and T25 Series
6/9
Fig. 6: Non-repetitive surge peak on-state
current for a sinusoidal pulse with width
tp < 10ms, and corresponding value of It.
Fig. 7: Relative variation of gate trigger current,
holding current and latching current versus
junction temperature (typical values).
Fig. 8: Relative variation of critical rate of
decrease of main current versus (dV/dt)c (typical
values).
Fig. 9: Relative variation of critical rate of
decrease of main current versus junction
temperature.
Fig. 10: DPAK Thermal resistance junction to
ambient versus copper surface under tab (printed
circuit board FR4, copper thickness: 35
m).
0.01
0.10
1.00
10.00
100
1000
3000
tp (ms)
ITSM (A), It (As)
Tj initial=25C
ITSM
It
dI/dt limitation:
50A/s
-40
-20
0
20
40
60
80
100
120
140
0.0
0.5
1.0
1.5
2.0
2.5
Tj(C)
IGT,IH,IL[Tj] / IGT,IH,IL [Tj=25C]
IGT
IH & IL
0.1
1.0
10.0
100.0
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
(dV/dt)c (V/s)
(dI/dt)c [(dV/dt)c] / Specified (dI/dt)c
BW/CW/T2535
B
0
25
50
75
100
125
0
1
2
3
4
5
6
Tj (C)
(dI/dt)c [Tj] / (dI/dt)c [Tj specified]
0
4
8
12
16
20
24
28
32
36
40
0
10
20
30
40
50
60
70
80
S(cm)
Rth(j-a) (C/W)
DPAK
BTA/BTB24, BTA25, BTA26 and T25 Series
7/9
PACKAGE MECHANICAL DATA
DPAK (Plastic)
REF.
DIMENSIONS
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
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
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
A
C2
D
R
2.0 MIN.
FLAT ZONE
A2
V2
C
A1
G
L
L3
L2
B
B2
E
FOOTPRINT DIMENSIONS (in millimeters)
DPAK (Plastic)
8.90
3.70
1.30
5.08
16.90
10.30
BTA/BTB24, BTA25, BTA26 and T25 Series
8/9
PACKAGE MECHANICAL DATA
RD91 (Plastic)
REF.
DIMENSIONS
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
A2
L2
L1
B2
C
C2
A1
C1
B1
N1
B
F
I
A
E3
N2
PACKAGE MECHANICAL DATA
TOP3 (Plastic)
REF.
DIMENSIONS
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
BTA/BTB24, BTA25, BTA26 and T25 Series
9/9
PACKAGE MECHANICAL DATA
TO-220AB (Plastic)
REF.
DIMENSIONS
Millimeters
Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
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
b1
0.61
0.88
0.024
0.034
b2
1.23
1.32
0.048
0.051
C
4.40
4.60
0.173
0.181
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
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
M
B
l4
C
b2
a2
l2
c2
l3
b1
a1
A
F
L
I
e
c1
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