Thyristors
25A Alternistor Triac
BTA25-600CW3G, BTA25-800CW3G
Pb
Description
Designed primarily for half-wave ac control applications,
such as motor controls, heating controls and power supply
crowbar circuits.
Features
• Blocking Voltage to 800 V
• On-State Current Rating
of 25 A RMS at 25°C
• Uniform Gate Trigger
Currents in Three
Quadrants
• High Immunity to dV/
dt − 500 V/µs minimum at
125°C
• Minimizes Snubber
Networks for Protection
• Industry Standard TO220AB Package
• High Commutating dI/
dt − 14 A/ms minimum at
125°C
• Internally Isolated (2500
VRMS)
• These are Pb−Free
Devices and are RoHS
Compliant
Functional Diagram
Pin Out
MT 2
MT 1
3
G
TO-220AB
Case 221 A
Style 4
1
2
3
Additional Information
Datasheet
Resources
Samples
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/20
Thyristors
25A Alternistor Triac
Maximum Ratings (TJ = 25°C unless otherwise noted)
Rating
Symbol
Value
Unit
VDRM,
VRRM
600
800
V
IT
25
A
BTA25−600CW3G
BTA25−800CW3G
Peak Repetitive Off-State Voltage (Note 1)
(Gate Open, Sine Wave 50 to 60 Hz, TJ = -40° to 125°C)
On-State RMS Current (Full Cycle Sine Wave, 60 Hz, TC = 95°C)
(RMS)
Peak Non-Repetitive Surge Current
(One Full Cycle Sine Wave, 60 Hz, TC = 25°C)
ITSM
Circuit Fusing Consideration (t = 8.3 ms)
Non−Repetitive Surge Peak Off−State Voltage (TJ = 25°C, t = 8.3 ms)
250
A
2
It
260
A²sec
VDSM/ VRSM
VDSM/ VRSM
+100
V
Peak Gate Current (TJ = 110°C, t ≤ 20μs)
IGM
4.0
W
Peak Gate Power (Pulse Width ≤ 20 µs, TC = 80°C)
PG(AV)
20
W
Average Gate Power (TJ = 110°C)
PG(AV)
1.0
W
Operating Junction Temperature Range
TJ
-40 to +125
°C
Storage Temperature Range
Tstg
-40 to +125
°C
RMS Isolation Voltage (t = 300 ms, R.H. ≤ 30%, TA = 25°C)
Viso
2500
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied.
Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
1. VDRM and VRRM for all types can be applied on a continuous basis. Ratings apply for zero or negative gate voltage; however, positive gate voltage shall not be applied concurrent with negative
potential on the anode. Blocking voltages shall not be tested with a constant current source such that the voltage ratings of the devices are exceeded.
Thermal Characteristics
Rating
Symbol
Value
Unit
RƟJC
RƟJA
2.13
60
°C/W
TL
260
°C
Junction−to−Case (AC)
Junction−to−Ambient
Thermal Resistance,
Maximum Lead Temperature for Soldering Purposes, 1/8” from case for
10 seconds
Electrical Characteristics - OFF (TJ = 25°C unless otherwise noted ; Electricals apply in both directions)
Characteristic
Peak Repetitive Blocking Current
(VD = VDRM = VRRM; Gate Open)
TJ = 25°C
TJ = 110°C
Symbol
Min
Typ
Max
IDRM,
IRRM
-
-
0.005
Unit
-
-
2.0
mA
Electrical Characteristics - ON (TJ = 25°C unless otherwise noted; Electricals apply in both directions)
Characteristic
Forward On-State Voltage (Note 2) (ITM = ±22.5 A Peak)
Symbol
Min
Typ
Max
Unit
VTM
−
−
1.55
V
2.0
−
35
2.0
−
35
2.0
−
35
−
−
50
−
−
75
−
−
75
−
−
75
MT2(+), G(+)
Gate Trigger Current (Continuous dc) (VD = 12 V, RL = 30 Ω)
MT2(+), G(−)
IGT
MT2(−), G(−)
Holding Current
(VD = 12 V, Gate Open, Initiating Current = ±500 mA)
IH
MT2(+), G(+)
Latching Current (VD = 12 V, IG = 12 mA)
MT2(+), G(−)
IL
MT2(−), G(−)
MT2(+), G(+)
Gate Trigger Voltage (VD = 12 V, RL = 30 Ω)
MT2(+), G(−)
VGT
MT2(−), G(−)
MT2(+), G(+)
Gate Non−Trigger Voltage (TJ = 110°C)
MT2(+), G(−)
MT2(−), G(−)
VGD
0.5
−
1.3
0.5
−
1.3
0.5
−
1.3
0.2
−
−
0.2
−
−
0.2
−
−
mA
mA
mA
V
V
2. Indicates Pulse Test: Pulse Width ≤ 2.0 ms, Duty Cycle ≤ 2%.
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/20
Thyristors
25A Alternistor Triac
Dynamic Characteristics
Characteristic
Symbol
Min
Typ
Max
Unit
(dI/dt)c
2.0
−
−
A/ms
Critical Rate of Rise of On−State Current
(TJ = 110°C, f = 120 Hz, IG = 20 mA, tr ≤100 ns)
dI/dt
−
−
50
A/µs
Critical Rate of Rise of Off-State Voltage
(VD = 0.66 x VDRM, Exponential Waveform, Gate Open, TJ = 110°C)
dV/dt
250
−
−
V/µs
Rate of Change of Commutating Current, See Figure 10.
(Gate Open, TJ = 110°C, No Snubber)
Voltage Current Characteristic of SCR
+Current
Symbol
Parameter
VDRM
Peak Repetitive Forward Off State Voltage
V TM
IDRM
Peak Forward Blocking Current
VRRM
Peak Repetitive Reverse Off State Voltage
IRRM
Peak Reverse Blocking Current
VTM
Maximum On State Voltage
IH
Holding Current
on stat e
IRR M at V RR M
IH
Quadrant 3
Main Terminal 2
Quadrant Definitions for a Triac
Quadrant 1
Main Terminal 2 +
IH
of f stat e
+V oltage
IDR M at V DR M
V TM
MT2 POSITIVE
(Positive Half Cycle)
+
(+) MT 2
(+) MT 2
Q u a d r a n t II
Q u ad ran t I
(+) IGT
GA TE
( ) IGT
GA TE
MT 1
MT 1
RE F
RE F
( ) MT 2
( ) MT 2
IGT
Q u a d r a n t III
+I GT
Q u a d r a n t IV
(+) IGT
GA TE
( ) IGT
GA TE
MT 1
MT 1
RE F
RE F
MT2 NEGA TIVE
(Negative Half Cycle)
All polarities are referenced to MT1
Witn in-phase signals (using standard AC lines) quadrants I and III are used.
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/20
Thyristors
25A Alternistor Triac
Figure 1. RMS Current Derating
Figure 2. On-State Power Dissipation
30
125
PAV, AVERAGE POWER (W)
115
110
105
100
95
90
85
80
0
5
10
15
20
IT(RMS), RMS ON-STATE CURRENT (A)
Figure 3. On−State Characteristics
25
20
15
10
5
0
25
0
5
10
15
20
IT(RMS), ON-STATE CURRENT (A)
25
Figure 4. Thermal Response
r(t), TRANSIEN T THERMAL RESIST ANCE (NORMALIZED)
TC, CASE TEMPERATURE (ϒC)
120
1
0. 1
0.01
0. 1
1
10
100
1000
1· 10 4
t, TIME (ms)
Figure 5. Hold Current Variation
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/20
Thyristors
25A Alternistor Triac
Figure 6. Gate Trigger Current Variation
Figure 7. Gate Trigger Voltage Variation
Figure 8. Critical Rate of Rise of Off-State Voltage
(Exponential Waveform)
Figure 9. Latching Current Variation
Figure 10. Simplified Test Circuit to Measure the Critical Rate of Rise of Commutating Current (di/dt)
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/20
Thyristors
25A Alternistor Triac
Dimensions
Part Marking System
4
SEATING
PLANE
B
F
4
Q
12
C
T
S
A
U
3
1
H
2
3
BTA25-xCWG
YMAXX
TO 220AB
CASE 221A
STYLE 12
K
Z
x =6 or 8
Y =Year
M =Month
A =Assembly Site
XX =Lot Serial Code
G =Pb-Free Package
R
L
V
J
G
D
N
Dim
Inches
Millimeters
Pin Assignment
Min
Max
Min
Max
1
Main Terminal 1
A
0.590
0.620
14.99
15.75
2
Main Terminal 2
B
0.380
0.420
9.65
10.67
3
Gate
C
0.178
0.188
4.52
4.78
4
No Connection
D
0.025
0.035
0.64
0.89
F
0.142
0.147
3.61
3.73
G
0.095
0.105
2.41
2.67
H
0.110
0.130
2.79
3.30
J
0.018
0.024
0.46
0.61
K
0.540
0.575
13.72
14.61
L
0.060
0.075
1.52
1.91
N
0.195
0.205
4.95
5.21
Q
0.105
0.115
2.67
2.92
R
0.085
0.095
2.16
2.41
S
0.045
0.060
1.14
1.52
T
0.235
0.255
5.97
6.47
U
0.000
0.050
0.00
1.27
V
0.045
---
1.15
---
Z
---
0.080
---
2.04
Ordering Information
Device
Package
Shipping
BTA25−600SW3G
TO−220AB
(Pb−Free)
500 Units / Rail
BTA25−800SW3G
TO−220AB
(Pb−Free)
500 Units / Rail
1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION Z DEFINES A ZONE WHERE ALL BODY AND LEAD IRREGULARITIES ARE
ALLOWED.
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are
not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at http://www.littelfuse.com/disclaimer-electronics.
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/20
