Teccor, Brand thyristors – Littelfuse Qxx25xx Series User Manual
Page 9
139
Revised: 09/23/13
©2013 Littelfuse, Inc
Specifications are subject to change without notice.
Teccor
®
brand Thyristors
25 Amp Standard & Alternistor (High Commutation) Triacs
Qxx25xx & Qxx25xHx Series
Dimensions — TO-218X (J Package) — Isolated Mounting Tab
Dimensions — TO-3 (P Package) Fastpak — Isolated Mounting Tab
G
R
Y
H
D
C
K
B
A
E
F
N
T
M
P
J
L
S
V
U
(diameter)
W
X
MT1
MT2
T
c
Measurement
Point
Gate
Note: Maximum torque to
be applied to mounting tab
is 8 in-lbs. (0.904 Nm).
Z
MT2
Gate
MT1
Φ G
5 -
Φ N
Φ J (MT1, MT2)
F
H
E
C
B
A
D
Q
O
R
S
P
U
T
I
M L
T
C
Measuring Point
Thickness off all three copper-alloy terminals is .032" (0.81 mm).
W
V
Φ K (Gate)
Dimension
Inches
Millimeters
Min
Max
Min
Max
A 0.810
0.835
20.57
21.21
B 0.610
0.630
15.49
16.00
C 0.178
0.188
4.52 4.78
D 0.055
0.070
1.40 1.78
E 0.487
0.497
12.37
12.62
F 0.635
0.655
16.13
16.64
G 0.022
0.029
0.56 0.74
H 0.075
0.095
1.91 2.41
J 0.575
0.625
14.61
15.88
K 0.256
0.264
6.50 6.71
L 0.220
0.228
5.58 5.79
M 0.080
0.088
2.03 2.24
N 0.169
0.177
4.29 4.49
P 0.034
0.042
0.86 1.07
R 0.113
0.121
2.87 3.07
S 0.086
0.096
2.18 2.44
T 0.156
0.166
3.96 4.22
U 0.164
0.165
0.410
0.420
V 0.603
0.618
15.31
15.70
W 0.000
0.005 0.00 0.13
X 0.003
0.012
0.07 0.30
Y 0.028
0.032
0.71 0.81
Z
0.085 0.095 2.17 2.42
Dimension
Inches
Millimeters
Min
Max
Min
Max
A
1.531
1.543
38.90
39.20
B
1.177
1.185
29.90
30.10
C
0.843
0.850
21.40
21.60
D
0.780
0.795
19.80
20.20
E
0.783
0.791
19.90
20.10
F
0.874
0.906
22.20
23.00
G
0.161
0.169
4.10
4.30
H
0.386
0.465
9.80
11.80
I
0.508
0.587
12.90
14.90
J
0.079
0.087
2.00
2.20
K
0.047
0.055
1.20
1.40
L
0.307
0.319
7.80
8.10
M
0.372
0.396
9.45
10.05
N
0.043
0.059
1.10
1.50
O
0.315
0.331
8.00
8.40
P
0.098
0.106
2.50
2.70
Q
0.846
0.886
21.50
22.50
R
0.244
0.256
6.20
6.50
S
0.106
0.130
2.70
3.30
T (MT1)
0.321
0.329
8.15
8.35
T (MT2)
0.321
0.329
8.15
8.35
T (Gate)
0.220
0.228
5.60
5.80
U (MT1)
0.246
0.254
6.25
6.45
U (MT2)
0.246
0.254
6.25
6.45
U (Gate)
0.183
0.191
4.65
4.85
V
0.120
0.130
3.05
3.30
W
0.175
0.185
4.45
4.70
Maximum torque to be applied to mounting tab is 8 in-lbs (0.904Nm).