August 2009 Doc ID 7469 Rev 8 1/9
9
BTA40, BTA41, BTB41
40 A standard TRIACs
Features
■High current TRIAC
■Low thermal resistance with clip bonding
■High commutation capability
■BTA series UL1557 certified (File ref: 81734)
■Packages are RoHS (2002/95/EC) compliant
Applications
■On/off function in static relays, heating
regulation, induction motor starting circuits
■Phase control operations in light dimmers,
motor speed controllers, and similar
Description
Available in high power packages, the
BTA/BTB40-41 series is suitable for general
purpose AC switching.
The BTA series provides an insulated tab (rated at
2500 V rms).
TOP3 insulated
(BTA41)
TOP3
(BTB41)
RD91 insulated
(BTA40)
A2
A1
G
GA2
A1
G
A2
A2
A1
G
A2
A1
Table 1. Device summary
Symbol Parameter BTA40(1)
1. Insulated package
BTA41(1) BTB41 Unit
IT(RMS) On-state rms current 40 41 41 A
VDRM/VRRM Repetitive peak off-state voltage 600 and 800 600 and 800 600 and 800 V
IGT Triggering gate current 50 50 50 mA
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Characteristics BTA40, BTA41, BTB41
2/9 Doc ID 7469 Rev 8
1 Characteristics
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
IT(RMS)
On-state rms current
(full sine wave)
TOP3 Tc = 95 °C 40 A
RD91 / TOP ins. Tc = 80 °C
ITSM
Non repetitive surge peak on-state
current (full cycle, Tj initial = 25 °C)
F = 50 Hz t = 20 ms 400 A
F = 60 Hz t = 16.7 ms 420
I²tI
²t Value for fusing tp = 10 ms 1000 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 VDSM/VRSM +
100 V
IGM Peak gate current tp = 20 µs Tj = 125 °C 8 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)
Symbol Parameter Value Unit
IGT (1)
VD = 12 V RL = 33 Ω
I - II - III
IV MAX. 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) IT = 500 mA MAX. 80 mA
ILIG = 1.2 IGT
I - III - IV MAX. 70 mA
II 160
dV/dt(2) VD = 67% VDRM gate open Tj = 125 °C MIN. 500 V/µs
(dV/dt)c(2) (dI/dt)c = 20 A/ms Tj = 125 °C MIN. 10 V/µs
1. Minimum IGT is guaranted at 5% of IGT max.
2. for both polarities of A2 referenced to A1
BTA40, BTA41, BTB41 Characteristics
Doc ID 7469 Rev 8 3/9
Table 4. Static characteristics
Symbol Test conditions Value Unit
VT (1) ITM = 60 A tp = 380 µs Tj = 25 °C MAX. 1.55 V
Vt0 (2) Threshold voltage Tj = 125 °C MAX. 0.85 V
Rd (2) Dynamic resistance Tj = 125 °C MAX. 10 mΩ
IDRM
IRRM
VDRM = VRRM
Tj = 25 °C MAX. 5µA
Tj = 125 °C 5 mA
1. Minimum IGT is guaranted at 5% of IGT max.
2. for both polarities of A2 referenced to A1
Table 5. Thermal resistance
Symbol Test conditions Value Unit
Rth(j-c) Junction to case (AC) RD91 (insulated) / TOP3 insulated 0.9 °C/W
TOP3 0.6
Rth(j-a) Junction to ambient TOP3 / TOP3 insulated 50 °C/W
Figure 1. Maximum power dissipation versus
on-state rms current (full cycle)
Figure 2. On-state rms current versus case
temperature (full cycle)
0 5 10 15 20 25 30 35 40
0
10
20
30
40
50
P(W)
I (A)
T(RMS)
180°
α
α
I (A)
T(RMS)
0
5
10
15
20
25
30
35
40
45
0 25 50 75 100 125
α=180°
BTA40
BTA41
BTB41
T (°C)
C
Figure 3. Relative variation of thermal
impedance versus pulse duration
Figure 4. On-state characteristics (maximum
values)
1.E-03 1.E-02 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03
1.E-03
1.E-02
1.E-01
1.E+00
K=[Z /R
th th]
t (s)
p
Z
BTA / BTB41
th(j-a)
Zth(j-c)
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
1
10
100
400
I (A)
TM
V (V)
TM
T = 25°C
j.
T max.
V = 0.85V
R = 10 m
j
to
dΩ
T=
jT max.
j
Characteristics BTA40, BTA41, BTB41
4/9 Doc ID 7469 Rev 8
Figure 9. Relative variation of critical rate of decrease of main current versus (dV/dt)c
Figure 5. Surge peak on-state current versus
number of cycles
Figure 6. Non-repetitive surge peak on-state
current for a sinusoidal pulse and
corresponding value of I2t
1 10 100 1000
0
50
100
150
200
250
300
350
400
450
I (A)
TSM
Number of cycles
t=20ms
One cycle
Non repetitive
T initial=25°C
j
Repetitive
T =70°C
C
0.01 0.10 1.00 10.0
0
100
1000
10000
I (A), I t (A s)
TSM
22
t (ms)
p
T initial=25 °C
Pulse width tp < 10 ms
j
I
TSM
dI/dt limitation:
50A/µs
I t
2
Figure 7. Relative variation of gate trigger,
holding and latching current versus
junction temperature
Figure 8. Relative variation of critical rate of
decrease of main current versus
(dV/dt)c (typical values)
-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
I
GT
I
H
& I
L
Typical values
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
(dV/dt)c (V/µs)
(dI/dt)c [(dV/dt)c] / specified (dI/dt)c
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
BTA40, BTA41, BTB41 Ordering information scheme
Doc ID 7469 Rev 8 5/9
2 Ordering information scheme
Figure 10. Ordering information scheme
BT A 40 - 600 B RG
TRIAC series
Insulation
Current
Voltage
Sensitivity and type
Packing mode
A = insulated
B = non-insulated
40 = 40 A in RD91
600 = 600 V
800 = 800 V
B = 50 mA standard
RG = Tube
Blank = Bulk
Package information BTA40, BTA41, BTB41
6/9 Doc ID 7469 Rev 8
3 Package information
●Epoxy meets UL94, V0
●Lead-free packages
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Table 6. TOP3 insulated and non-insulated dimensions
Ref.
Dimensions
Millimeters Inches
Min. Max. Min. 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
ØL 4.08 4.17 0.161 0.164
P 1.20 1.40 0.047 0.055
R 4.60 typ. 0.181 typ.
R
H
K
G
F
E
D
B
A
C
JJ
P
ØL
BTA40, BTA41, BTB41 Package information
Doc ID 7469 Rev 8 7/9
Table 7. RD91 dimensions
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°
A
E3
N2 N1
B
F
I
A1
B1
L1
A2
L2
B2
C
C2 C1
Ordering information BTA40, BTA41, BTB41
8/9 Doc ID 7469 Rev 8
4 Ordering information
5 Revision history
Table 8. Ordering information
Order code(1)
1. xxx = voltage
Marking Package Weight Base qty Delivery mode
BTA40-xxxB BTA40xxxB RD91 20 g 25 Bulk
BTA41-xxxBRG BTA41xxxB TOP3 Ins. 4.5 g 30 Tube
BTB41-xxxBRG BTB41xxxB TOP3 4.5 g 30 Tube
Table 9. Document revision history
Date Revision Changes
Sep-2003 5 Last update.
25-Mar-2005 6 TOP3 delivery mode changed from bulk to tube.
14-Oct-2005 7 Tc values for IT changed in Table 3. ECOPACK
statement added.
10-Aug-2009 8
Updated Ta b l e 2 to correctly place packages. Updated
Figure 2. Ta b l e 5 changed to correctly place TOP3.
Updated ECOPACK statement.
BTA40, BTA41, BTB41
Doc ID 7469 Rev 8 9/9
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