September 2007 Rev 9 1/12
12
BTA12, BTB12, T12xx
12 A Snubberless™, logic level and standard triacs
Features
■Medium current triac
■Low thermal resistance with clip bonding
■Low thermal resistance insulation ceramic for
insulated BTA
■High commutation (4Q) or very high
commutation (3Q) capability
■BTA series UL1557 certified (File ref: 81734)
■Packages are RoHS ( 2002/95/EC) compliant
Applications
ON/OFF or phase angle function in applications
such as static relays, light dimmers and appliance
motors speed controllers.
The snubberless versions (BTA/BTB...W and T12
series) are especially recommended for use on
inductive loads, because of their high
commutation performances. The BTA series
provides an insulated tab (rated at 2500 V RMS).
Description
Available either in through-hole or surface-mount
packages, the BTA12, BTB12 and T12xx triac
series is suitable for general purpose mains
power AC switching.
Order code
See Ordering information on page 11
TM: Snubberless is a trademark of STMicroelectronics
A2
A1
G
A2
A2
A1
G
G
A2
A2
A1
G
A2
A1
G
A2
A2
A1
D2PAK
(T12-G)
TO-220AB Insulated
(BTA12)
TO-220AB
(BTB12)
I2PAK
(T12-R)
Table 1. Device summary
Symbol Parameter T12xx BTA12 (1) BTB12
IT(RMS) RMS on-state current 12 12 12
VDRM/VRRM Repetitive peak off-state voltage 600/800 600/800 600/800
IGT (Snubberless) Triggering gate current 10/35/50 5/10/35/50 5/10/35/50
IGT (Standard) Triggering gate current - 35/50 35/50
1. Insulated
www.st.com
Characteristics BTA12, BTB12, T12xx
2/12
1 Characteristics
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
IT(RMS)
RMS on-state current
(full sine wave)
I2PAK / D2PA K /
TO-220AB Tc = 105° C 12 A
TO-220AB Ins. Tc = 90° C
ITSM
Non repetitive surge peak on-state
current (full cycle, Tj initial = 25° C)
F = 50 Hz t = 20 ms 120 A
F = 60 Hz t = 16.7 ms 126
I2tI
2t Value for fusing tp = 10 ms 78 A²s
dI/dt Critical rate of rise of on-state current
IG = 2 x IGT , tr ≤ 100 ns F = 120 Hz Tj = 125° C 50 A/µs
VDSM/VRSM
Non repetitive surge peak off-state
voltage tp = 10 ms Tj = 25° C VDRM/VRRM
+ 100 V
IGM Peak gate current tp = 20 µs Tj = 125° C 4 A
PG(AV) Average gate power dissipation Tj = 125° C 1 W
Tstg
Tj
Storage junction temperature range
Operating junction temperature range
- 40 to + 150
- 40 to + 125 °C
Table 3. Electrical characteristics (Tj = 25°C, unless otherwise specified)
Snubberless and logic level (3 quadrants)
Symbol Test conditions Quadrant
T12xx BTA12 / BTB12
Unit
T1210 T1235 T1250 TW SW CW BW
IGT (1)
1. Minimum IGT is guaranted at 5% of IGT max
VD = 12 V
RL = 30 Ω
I - II - III MAX. 10 35 50 5 10 35 50 mA
VGT I - II - III MAX. 1.3 V
VGD
VD = VDRM
RL = 3.3 kΩ
Tj = 125° C
I - II - III MIN. 0.2 V
IH (2)
2. for both polarities of A2 referenced to A1
IT = 100 mA MAX. 15 35 50 10 15 35 50 mA
ILIG = 1.2 IGT
I - III MAX. 25 50 70 10 25 50 70 mA
II 30 60 80 15 30 60 80
dV/dt (2) VD = 67 %VDRM gate open
Tj = 125° C MIN. 40 500 1000 20 40 500 1000 V/µs
(dI/dt)c (2)
(dV/dt)c = 0.1 V/µs
Tj = 125° C
MIN.
6.5 3.5 6.5
A/ms
(dV/dt)c = 10 V/µs
Tj = 125° C 2.9 1 2.9
Without snubber
Tj= 125° C 6.5 12 6.5 12
BTA12, BTB12, T12xx Characteristics
3/12
Table 4. Electrical characteristics (Tj = 25°C, unless otherwise specified)
standard (4 quadrants)
Symbol Test Conditions Quadrant
BTA12 / BTB12
Unit
CB
IGT (1)
1. Minimum IGT is guaranted at 5% of IGT max.
VD = 12 V RL = 30 Ω
I - II - III
IV MAX. 25
50
50
100 mA
VGT ALL MAX. 1.3 V
VGD VD = VDRM RL = 3.3 kΩ Tj = 125° C ALL MIN. 0.2 V
IH (2)
2. for both polarities of A2 referenced to A1.
IT = 500 mA MAX. 25 50 mA
ILIG = 1.2 IGT
I - III - IV MAX. 40 50 mA
II 80 100
dV/dt (2) VD = 67% VDRM gate open Tj = 125° C MIN. 200 400 V/µs
(dV/dt)c (2) (dI/dt)c = 5.3 A/ms Tj = 125° C MIN. 5 10 V/µs
Table 5. Static characteristics
Symbol Test conditions Value Unit
VT (1)
1. for both polarities of A2 referenced to A1
ITM = 17 A tp = 380 µs Tj = 25° C MAX. 1.55 V
Vt0 (1) Threshold voltage Tj = 125° C MAX. 0.85 V
Rd (1) Dynamic resistance Tj = 125° C MAX. 35 mΩ
IDRM
IRRM
VDRM = VRRM
Tj = 25° C MAX. 5µA
Tj= 125° C 1 mA
Table 6. Thermal resistance
Symbol Parameter Value Unit
Rth(j-c) Junction to case (AC) I2PAK / D2PAK / TO-220AB 1.4 °C/W
TO-220AB insulated 2.3
Rth(j-a)
Junction to ambient S(1) = 1 cm2
1. Copper surface under tab.
D2PA K 4 5
°C/W
TO-220AB / I2PA K
TO-220AB insulated 60
Characteristics BTA12, BTB12, T12xx
4/12
Figure 1. Maximum power dissipation versus
RMS on-state current (full cycle)
Figure 2. RMS on-state current versus case
temperature (full cycle)
P(W)
I (A)
T(RMS)
16
14
12
10
8
6
4
2
0
0 1 2 3 4 5 6 7 8 9 10 11 12
I (A)
T(RMS)
0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
25 50 75 100 125
T (°C)
C
BTA
BTB / T12
Figure 3. RMS on-state current versus
ambient temperature (printed
circuit board FR4, copper
thickness: 35µm) (full cycle)
Figure 4. Relative variation of thermal
impedance versus pulse duration
0 25 50 75 100 125
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
I (A)
T(RMS)
T (°C)
C
DPAK
(S=1cm )
2
2
1E-3 1E-2 1E-1 1E+0 1E+1 1E+2 5E+2
1E-2
1E-1
1E+0
K=[Z /R
th th]
t (s)
p
Zth(j-c)
Zth(j-a)
Figure 5. On-state characteristics (maximum
values)
Figure 6. Surge peak on-state current versus
number of cycles
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
1
10
100
I (A)
TM
V (V)
TM
T max.
V = 0.85V
R = 35 m
j
to
dΩ
T=
jT max.
j
T = 25°C
j.
110 100 1000
0
10
20
30
40
50
60
70
80
90
100
110
120
130
I (A)
TSM
Number of cycles
t=20ms
One cycle
Non repetitive
T initial=25°C
j
Repetitive
T =90°C
C
BTA12, BTB12, T12xx Characteristics
5/12
Figure 7. Non-repetitive surge peak on-state
current for a sinusoidal pulse with
width tp < 10 ms and corresponding
value of I2t
Figure 8. Figure 8: Relative variation of gate
trigger current, holding current and
latching current versus junction
temperature (typical values)
0.01 0.10 1.00 10.00
10
100
1000
I (A), I t (A s)
TSM 22
t (ms)
p
T initial=25°C
j
ITSM
dI/dt limitation:
50A/µs
I t
2
-40 -20 0 20 40 60 80 100 120 140
0.0
0.5
1.0
1.5
2.0
2.5
T (°C)
j
I,I,I[T] /
GT H L j I ,I ,I [T =25°C]
GT H L j
IGT
IH& IL
Figure 9. Relative variation of critical rate of
decrease of main current versus
(dV/dt)c (typical values)
(BW/CW/T1210/T1235)
Figure 10. Relative variation of critical rate of
decrease of main current versus
(dV/dt)c (typical values) (TW)
0.1 1.0 10.0 100.0
0.0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
T1210/SW
(dV/dt)c (V/µs)
(dI/dt)c [(dV/dt)c] / Specified (dI/dt)c
T1235/T1250/CW/BW
C
B
0.1
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
1.0 10.0 100.0
(dV/dt)c (V/µs)
(dI/dt)c [(dV/dt)c] / Specified (dI/dt)c
TW
Figure 11. Relative variation of critical rate of
decrease of main current versus
junction temperature
Figure 12. D2PAK thermal resistance junction
to ambient versus copper surface
under tab (printed circuit board
FR4, copper thickness: 35 µm)
0 25 50 75 100 125
0
1
2
3
4
5
6
(dI/dt)c [T ] / pecified]
j
(dI/dt)c [T s
j
T (°C)
j
0 4 8 1216202428323640
0
10
20
30
40
50
60
70
80
S(cm²)
R (°C/W)
th(j-a)
DPAK
2
Ordering information scheme BTA12, BTB12, T12xx
6/12
2 Ordering information scheme
Figure 13. BTA12 and BTB12 series
Figure 14. T12xx series
BT A 12 - 600 BW RG
Triac series
Insulation
Current
Voltage
Sensitivity and type
Packing mode
A = insulated
B = non insulated
12 = 12A
600 = 600V
800 = 800V
B = 50mA Standard BW = 50mA Snubberless
C = 25mA Standard CW = 35mA
RG = Tube
Snubberless
SW = 10mA Logic Level TW = 5mA Logic Level
T 12 35 - 600 G (-TR)
Triac series
Sensitivity
Voltage
Package
Packing mode
Current
12 = 12 A
50 = 50 mA
35 = 35 mA
10 = 10 mA
600 = 600 V
800 = 800 V
G = D PAK
R = I PAK
Blank = Tube
-TR = Tape & Reel
2
2
BTA12, BTB12, T12xx Ordering information scheme
7/12
Table 7. Product selector
Order code(1)
1. BTB: non insulated TO-220AB package
Voltage (xxx)
Sensitivity Type Package
600 V 800 V
BTA/BTB12-xxxBRG X X 50 mA Standard TO-220AB
BTA/BTB12-xxxBWRG X X 50 mA Snubberless TO-220AB
BTA/BTB12-xxxCRG X X 25 mA Standard TO-220AB
BTA/BTB12-xxxCWRG X X 35 mA Snubberless TO-220AB
BTA/BTB12-xxxSWRG X X 10 mA Logic Level TO-220AB
BTA/BTB12-xxxTWRG X X 5 mA Logic Level TO-220AB
T1210-800G - X 10 mA Logic Level D2PA K
T1235-xxxG X X 35 mA Snubberless D2PA K
T1235-xxxR X X 35 mA Snubberless I2PA K
T1250-600G X - 50 mA Snubberless D2PA K
Packaging information BTA12, BTB12, T12xx
8/12
3 Packaging information
●Epoxy meets UL94, V0
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a lead-free second level interconnect. The category of
second level interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
Figure 15. Footprint (dimensions in mm)
Table 8. D2PAK dimensions
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°
G
L
L3
L2
B
B2
E
2mm min.
FLAT ZONE
A
C2
D
R
A2
V2
C
A1
16.90
10.30
8.90 3.70
5.08
1.30
BTA12, BTB12, T12xx Packaging information
9/12
Table 9. I2PAK dimensions
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
b 0.70 0.93 0.028 0.037
b1 1.20 1.38 0.047 0.054
b2 1.25 1.40 0.049 0.055
c 0.45 0.60 0.018 0.024
c2 1.21 1.36 0.048 0.054
D 8.95 9.35 0.352 0.368
e 2.44 2.64 0.096 0.104
E 10.00 10.28 0.394 0.405
L 13.10 13.60 0.516 0.535
L1 3.75 0.148
L2 1.27 1.40 0.050 0.055
V5° 5°
V4 45° 45°
E
L2
L1
b1
b2
D
A1
c
c2
V
V
V4
A
b
e
V4
L
Packaging information BTA12, BTB12, T12xx
10/12
Table 10. TO-220AB dimensions (insulated and non-insulated)
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
ØI 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
M2.60 0.102
C
b2
c2
F
Ø I
L
A
a1
a2
B
e
b1
I4
l3
l2
c1
M
BTA12, BTB12, T12xx Ordering information
11/12
4 Ordering information
5 Revision history
Table 11. Ordering information
Order code Marking Package Weight Base qty Delivery
mode
BTA/BTB12-xxxyzRG BTA/BTB12-xxxyz TO-220AB 2.3 g 50 Tube
T1210-xxxG-TR T1210-xxxG D2PAK 1.5 g 1000 Tape and reel
T1235-xxxG T1235xxxG D2PAK 1. 5 g 50 Tube
T1235-xxxG-TR T1235xxxG 1000 Tape and reel
T1235-xxxR T1235-xxxR I2PAK 1.5 g 50 Tube
T1250-xxxG-TR T1250xxxG D2PAK 1.5 g 1000 Tape and reel
Note: xxx = voltage, y = sensitivity, z = type
Table 12. Revision history
Date Revision Changes
Sep-2002 6A Last update.
25-Mar-2005 7 1. I2PAK package added.
2. TO-220AB delivery mode changed from bulk to tube.
27-May-2005 8 T1210 added
28-Sep-2007 9 Reformatted to current standards. T1250 added
BTA12, BTB12, T12xx
12/12
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