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
Static Characteristics
VT MAX @ ITM = 35 A, tp = 380µs NOTE 2
Tj = 25˚C
1.55V
Vto MAX @ Threshold Voltage NOTE 2
Tj = 125˚C
0.85V
Rd MAX @ Dynamic Resistance NOTE 2
Tj = 125˚C
16mΩ
IDRM MAX @ VDRM = VRRM
Tj = 25˚C
5µA
IRRM MAX @ VDRM = VRRM
Tj = 125˚C
3mA
Thermal Resistances
SYMBOL
RATING
Junction to Case (AC)
TO-220AB
Rth(j-c)
0.8˚C/W
Junction to Case (AC)
TO-220AB Isolated
Rth(j-c)
1.7˚C/W
Junction to Ambient
TO-220AB
Rth(j-a)
60˚C/W
Junction to Ambient
TO-220AB Isolated
Rth(j-a)
60˚C/W
SERIES
Isolation Type
A: Isolated
B: Non-Isolated
Rated Current
24: 25 Amp
Packaging
Blank: Bulk
PT: Plastic Tube
Maximum
Blocking Voltage
400: 400Vpk
600: 600Vpk
800: 800Vpk
1000: 1000Vpk
Type
B: Standard (IGT=50mA)
BW: Alternistor/No Snubber (IGT=50mA)
CW: Alternistor/No Snubber (IGT=35mA)
CT
CW
24
036912
15
18
21
24
27
IT(RMS) [A]
Fig. 1: Power dissipation versus RMS on-state current (full cycle).
30
25
20
15
10
5
0
30
25
20
15
10
5
0
130
120
TC [˚C]
Fig. 2: RMS on-state current versus
case temperature (full cycle)
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.
Non-Repetitive
Tj initial = 25˚C
1.0
10.0
100.0
1000.0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
110
100
90
80
70
60
Non-Isolated
Isolated
Part Number Selection
Part Number
Voltage [Vpk]
IGT [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
CTA/CTB 24
24Amp - 400/600/800/1000V - TRIAC
USA
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Email: sales@cynergy3.com
Cynergy3 Components
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San Diego, CA 92154
EUROPE - UK
Telephone +44 (0) 1202 897969
Fax +44 (0) 1202 891918
Email: sales@cynergy3.com
Cynergy3 Components Ltd.
7 Cobham Road
Ferndown Industrial Estate
Wimborne, Dorset BH21 7PE
ASIA - Thailand
Telephone +66 (0)2 665 2517
Fax +66 (0)2 665 2588
Cynergy 3 Components, Asia
18/8 Fico Place 12th Floor
Soi Sukhumvit 21 (Asoke)
Klongtoey Nua, Wattana
Bangkok, Thailand 10110
ISO
9001 CERTIFIED
TM
Approvals
UL Recognized Component - E72445 (CTA Series)
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