ISO9001 Certified
P O W E R C O M P O N E N T S
>
Suitable for General Purpose AC Switching
>
Alternistor/No Snubber Versions
for Inductive Loads
>
Logic Level Available for use with
Microcontrollers and Low Level Devices
>
IGT Range 35-50 mA (Q1)
>
V
DRM
/V
RMM
400, 600, 800, 1000V
G
A2
A1
TO-220AB Isolated
(CTA24)
TO-220AB Non-Isolated
(CTB24)
G
A2
A2
A1
G
A2
A1
Applications
Phase Control
Static Switching
Light Dimming
Motor Speed Control
Kitchen Equipment
Power Tools
Solenoid Valve Controls:
Dishwashers
Washing Machines
GENERAL NOTES
1. Minimum IGT is guaranted at 5% of IGT max.
2. For both polarities of A2 referenced to A1
3. All parameters at 25 degrees C unless otherwise specified.
CTA/CTB24
25Amp - 400/600/800/1000V -
TRIAC
Absolute Maximum Ratings
CONDITIONS
SYMBOL
RATING
RMS On-State Current (full sine wave)
Tc = 100C
TO-220AB
I
T(RMS)
25A
Tc = 75C
TO-220AB Iso
Non Repetitive Surge Peak On-State Current
F =50 Hz
250A
(Full Cycle, Tj Initial = 25C)
F =60 Hz
I
TSM
260A
I
2
t Value for fusing
tp = 10 ms
I
2
t
340A
2
s
Critical rate of rise of on-state current
I
G
=2 x I
GT
, tr<100 ns, Tj = 125C
di/dt
100A/s
Peak Gate Current @ Tj = 125C
tp = 20 s
I
GM
4A
Average Gate Power Dissipation @ Tj = 125C
P
G(AV)
1W
Storage Temperature Range
Tstg
-40 to +150C
Operating Junction Temperature Range
Tj
-40 to +125C
Isolation Voltage (CTA Series only)
V
ISO
2500 V
RMS
Electrical Characteristics
ALTERNISTOR/NO SNUBBER AND LOGIC LEVEL (3 Quadrants)
CW
BW
I
GT
MAX @ V
D
=12 V, R
L
= 30
NOTE 1
QI-II-III
35mA
50mA
V
GT
MAX @ V
D
=12 V, R
L
= 30
QI-II-III
1.3V
1.3V
V
GD
MIN @ V
D
=V
DRM
, R
L
= 3.3k
Tj = 125C
QI-II-III
0.2V
0.2V
I
H
MAX @ I
T
= 500 mA
NOTE 2
50mA
75mA
I
L
MAX @ I
G
= 1.2 I
GT
QI-III
50mA
70mA
I
L
MAX @ I
G
= 1.2 I
GT
Q-II
80mA
100mA
dv/dt MIN @ V
D
= 67%V
DRM
(gate open)
NOTE 2
Tj = 125C
500V/s
1000V/s
(di/dt)c MIN without Snubber
NOTE 2
Tj = 125C
13A/ms
22A/ms
STANDARD (4 Quadrants)
B
I
GT
MAX @ V
D
=12 V, R
L
= 30
NOTE 1
QI-II-III
50mA
I
GT
MAX @ V
D
=12 V, R
L
= 30
NOTE 1
QIV
100mA
V
GT
MAX @ V
D
=12 V, R
L
= 30
Q-All
1.3V
V
GD
MIN @ V
D
=V
DRM
, R
L
= 3.3k
Tj = 125C
Q-All
0.2V
I
H
MAX @ I
T
= 500 mA
NOTE 2
80mA
I
L
MAX @ I
G
= 1.2 I
GT
QI-III-IV
70mA
I
L
MAX @ I
G
= 1.2 I
GT
Q-II
160mA
dv/dt MIN @ V
D
= 67%V
DRM
(gate open)
NOTE 2
Tj = 125C
500V/s
(dv/dt)c MIN @ (di/dt)c = 13.3 A/ms
NOTE 2
Tj = 125C
10V/s
Dimensions
Millimeters
Inches
REF. Min.
Typ.
Max.
Min.
Typ.
Max.
A
15.24
15.75
0.6
0.62
B
3.23
0.127
C
12.78
13.79
0.503
0.543
D
9.96
10.36
0.392
0.408
E
0.69
0.94
0.027
0.037
F
1.22
1.32
0.048
0.052
G
4.62
4.83
0.182
0.19
H
0.46
0.61
0.018
0.024
I
2.49
2.84
0.098
0.112
J
2.39
2.69
0.094
0.106
K
6.48
6.88
0.255
0.271
L
3.78
3.89
0.149
0.153
M
15.49
16
16.51
0.61
0.63
0.65
N
2.59
2.9
0.102
0.114
O
0.99
1.55
0.039
0.061
P
0.99
1.55
0.039
0.061
Q
2.67
0.105
Weight: 2.3g (0.08 oz)
Q
D
M
G
F
C
O
I
P
E
B
A
K
N
L
J
H
CTA/CTB24
25Amp - 400/600/800/1000V - TRIAC
USA
Sales Support (877) 502-5500
Tech Support (877) 702-7700
Fax (619) 710-8540
Email: sales@crydom.com
Crydom Corp
2320 Paseo de las Americas, Suite 201
San Diego, CA 92154
EUROPE - UK
Telephone +44 (0) 1202 365070
Fax +44 (0) 1202 365090
Email: intsales@crydom.com
Crydom International Ltd.
7 Cobham Road
Ferndown Industrial Estate
Wimborne, Dorset BH21 7PE
Germany
Telephone +49 (0) 180 3000 506
ASIA - Thailand
Telephone +66 (0)2 665 2517
Fax +66 (0)2 665 2588
Crydom Asia
18/8 Fico Place 12th Floor
Soi Sukhumvit 21 (Asoke)
Klongtoey Nua, Wattana
Bangkok, Thailand 10110
ISO9001 Certified
2005 Crydom Corp, All Rights Reserved. Specifications are subject to change without prior notice. Crydom and the Crydom logo are trademarks of Crydom Corp. CrydomCT24_C2205.pdf
Static Characteristics
V
T
MAX @ I
TM
= 35 A, tp = 380s
NOTE 2
Tj = 25C
1.55V
Vto MAX @ Threshold Voltage
NOTE 2
Tj = 125C
0.85V
Rd MAX @ Dynamic Resistance
NOTE 2
Tj = 125C
16m
I
DRM
MAX @ V
DRM
= V
RRM
Tj = 25C
5A
I
RRM
MAX @ V
DRM
= V
RRM
Tj = 125C
3mA
Thermal Resistances
SYMBOL
RATING
Junction to Case (AC)
TO-220AB
Rth(j-c)
0.8C/W
Junction to Case (AC)
TO-220AB Isolated
Rth(j-c)
1.7C/W
Junction to Ambient
TO-220AB
Rth(j-a)
60C/W
Junction to Ambient
TO-220AB Isolated
Rth(j-a)
60C/W
SERIES
Isolation Type
A: Isolated
B: Non-Isolated
Rated Current
Packaging
Blank: Bulk
PT: Plastic Tube
Maximum
Blocking Voltage
400: 400Vpk
600: 600Vpk
800: 800Vpk
1000: 1000Vpk
Type
B: Standard (I
GT
=50mA)
BW: Alternistor/No Snubber (I
GT
=50mA)
CW: Alternistor/No Snubber (I
GT
=35mA)
CT
CW
24
0
3
6
9
12
15
18
21
24
27
I
T(RMS)
[A]
Fig. 1: Power dissipation versus RMS on-state current (full cycle).
P
]
W
[
30
25
20
15
10
5
0
30
25
20
15
10
5
0
75
80
100
120
140
150
T
C
[C]
Fig. 2: RMS on-state current versus
case temperature (full cycle)
I
)
S
M
R
(
T
]
A
[
V
TM
[V]
Fig. 3: On-state current versus
on-state voltage (instantaneous values)
160
100
10
80
120
60
50
40
30
20
250
1
10
100
1000
Number of Cycles
Fig. 4: Non-repetitive surge peak on-state
current versus number of cycles.
Isolated
Non-Isolated
Non-Repetitive
Tj initial = 25C
I
M
T
]
A
[
I
M
S
T
]
A
[
1.0
10.0
100.0
1000.0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Part Number Selection
Part Number
Voltage [Vpk]
I
GT
[mA]
Type
Package
CTA/CTB24-xxxB
400, 600, 800, 1000
50mA
Standard
TO-220AB
CTA/CTB24-xxxBW
400, 600, 800, 1000
50mA
Alternistor/No Snubber TO-220AB
CTA/CTB24-xxxCW
400, 600, 800, 1000
35mA
Alternistor/No Snubber TO-220AB
Part Number Designation
Approvals
UL - E72445
24: 25 Amp
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