M2
Lead Form Dimensions
M2
The TO-202AB, TO-220AB, and TO-92 package configurations,
because of their unique design, can be mounted in a variety of
methods, depending upon heat sink requirements and circuit
packaging methods. Any of the derived types shown in this sec-
tion are available as standard parts direct from the factory. Cus-
tom package variations are available. Consult the factory for
more information.
To designate lead form options, simply indicate the type number
at the end of the Teccor standard part number.
Example: Q2004F312 (Signifies Type 12)
Note: When ordering a TO-202 F package, include a 1 for stan-
dard full tab package. When ordering anything other than full tab,
remove the 1 and add the Lead Form Type.
See “Description of Part Numbers” in the Product Selection
Guide of this catalog for a complete description of Teccor part
numbers.
Lead Bending Specifications
Leads may be bent easily and may be bent to any desired angle,
provided that the bend is made at a minimum 0.063" (0.1 for
TO-218) away from the package body with a minimum radius of
0.032". DO-15X device leads may be bent with a minimum radius
of 0.050", and DO-35 device leads may be bent with a minimum
radius of 0.028". Leads should be held firmly between the pack-
age body and the bend, so that strain on the leads is not trans-
mitted to the package body.
When bending leads in the plane of the leads (spreading), bend
only the narrow part.
Sharp angle bends should be done only once, as repetitive bend-
ing will fatigue and break the leads.
©2004 Littelfuse, Inc.
Thyristor Product Catalog
M2 - 1
http://www.littelfuse.com
+1 972-580-7777
Lead Form Dimensions
Data Sheets
TO-202AB Type 11 — F Package
Tab Common to
MT2 / Anode
TO-202AB Type 2 — F Package
A
B
A
MT1 / Cathode
MT2 / Anode
Gate
MT1 / Cathode
MT2 / Anode
Gate
MT2 / Anode
B
C
Inches
Dimension
A
B
C
MIN
0.080
0.301
0.080
MAX
0.120
0.361
0.120
Millimeters
MIN
MAX
2.03
3.05
7.65
9.17
2.03
3.05
Inches
Dimension
A
B
MIN
0.240
0.030
MAX
0.260
0.050
Millimeters
MIN
MAX
6.100
6.60
0.762
1.27
TO-202AB Type 12 — F Package
TO-202AB Type 21 — F Package
Tab Common
to MT2 / Anode
B
A
B
C
MT1 / Cathode
MT2 / Anode
Gate
A
D
MT2 /
Anode
MT1 / Cathode
MT2 / Anode
Gate
E
Inches
Inches
Dimension
A
B
MIN
0.435
0.120
MAX
0.495
0.160
Millimeters
MIN
MAX
11.05
12.57
3.05
4.06
Dimension
A
B
C
D
E
MIN
0.030
0.240
0.080
0.301
0.080
MAX
0.050
0.260
0.120
0.361
0.120
Millimeters
MIN
MAX
0.762
1.27
6.100
6.60
2.030
3.05
7.650
9.17
2.030
3.05
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+1 972-580-7777
M2 - 2
©2004 Littelfuse, Inc.
Thyristor Product Catalog
Data Sheets
Lead Form Dimensions
TO-202AB Type 23 — F Package
Sidac Only
TO-202AB Type 3 — F Package
Non-isolated
MT2 / Anode
A
C
B
B
A
MT1 / Pin 1
MT2 / Pin 2
MT1 / Cathode
Gate
Inches
Dimension
A
B
C
MIN
0.240
0.030
0.030
MAX
0.260
0.050
0.050
Millimeters
MIN
MAX
6.100
6.60
0.762
1.27
0.762
1.27
Inches
Dimension
A
B
MIN
0.030
0.645
MAX
0.050
0.705
Millimeters
MIN
MAX
0.762
1.27
16.380
17.91
TO-202AB Type 26 — F Package
TO-202AB Type 32 — F Package
Non-isolated
MT2 / Anode
A
B
C
B
C
A
Gate
MT2 / Anode
MT1 / Cathode
D
E
MT1 / Cathode
Gate
Inches
Dimension
A
B
C
D
E
MIN
0.240
0.030
0.050
0.095
0.172
MAX
0.260
0.050
0.070
0.105
0.202
Millimeters
MIN
MAX
6.100
6.60
0.762
1.27
0.127
1.78
2.410
2.67
4.370
5.13
Inches
Dimension
A
B
C
MIN
0.030
0.435
0.120
MAX
0.050
0.495
0.160
Millimeters
MIN
MAX
0.762
1.27
11.050
12.57
3.050
4.06
©2004 Littelfuse, Inc.
Thyristor Product Catalog
M2 - 3
http://www.littelfuse.com
+1 972-580-7777
Lead Form Dimensions
Data Sheets
TO-202AB Type 4 — F Package
TO-202AB Type 43 — F Package
Surface Mount
A
MT2 / Anode
B
C
G
0.150
MT2 / Anode
D
G
C
D
0.450
A
Gate
B
E
E
F
0.050
Five
PLCs
0.150
MT1 / Cathode
F
MT1 / Cathode
Pad Outline
Gate
Inches
Dimension
A
B
C
D
E
F
G
MIN
0.240
0.114
0.023
0.030
0.297
0.030
0.297
MAX
0.260
0.134
0.029
0.050
0.327
0.050
0.327
Millimeters
MIN
MAX
6.100
6.600
2.900
3.400
0.584
0.737
0.762
1.270
7.540
8.310
0.765
1.270
7.540
8.310
Inches
Dimension
A
B
C
D
E
F
G
MIN
0.030
0.680
0.110
0.080
0.080
0.110
0.000
MAX
0.050
0.760
0.130
0.100
0.100
0.130
0.013
Millimeters
MIN
MAX
0.762
1.270
17.270
19.300
2.800
3.300
2.030
2.540
2.030
2.540
2.800
3.300
0.000
0.330
TO-202AB Type 41 — F Package
TO-220 Type 51 — R or L Package
Replaces RCA 6249
MT2 / Anode
Mounting Tab
Common to
MT2 / Anode
for Non-isolated
R Package
A
C
B
Gate
MT1 / Cathode
A
B
MT2 / Anode
Gate
Ref Only
MT1 / Cathode
Inches
Dimension
A
B
MIN
0.380
0.180
MAX
0.420
0.220
Millimeters
MIN
MAX
9.65
10.67
4.57
5.59
Inches
Dimension
A
B
C
MIN
0.320
0.190
0.795
MAX
0.340
0.850
Millimeters
MIN
MAX
8.13
8.64
4.83
20.19
21.59
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M2 - 4
©2004 Littelfuse, Inc.
Thyristor Product Catalog
Data Sheets
Lead Form Dimensions
TO-220 Type 52 — R or L Package
TO-220 Type 54 — R Package
Replaces Motorola Form 4, G.E. Type 4, RCA 6206
Mounting Tab
Common to
MT2 / Anode
for Non-isolated
R Package
MT2 / Anode
B
Gate / Trigger
MT2 / Anode
MT1 / Cathode
A
D
C
A
Gate
MT1 / Cathode
B
Inches
Dimension
A
B
C
D
MIN
0.169
0.040
0.250
0.110
MAX
0.189
0.060
0.170
Millimeters
MIN
MAX
4.29
4.80
1.02
1.52
6.35
2.79
4.32
Inches
Dimension
A
B
MIN
0.040
0.500
MAX
0.070
Millimeters
MIN
MAX
1.02
1.78
12.70
TO-220 Type 55 — R or L Package
TO-220 Type 53 — R or L Package
Replaces G.E. Type 5
Mounting Tab
Common to
MT2 / Anode
for Non-isolated
R Package
Mounting Tab
Common to
MT2 / Anode
for Non-isolated
R Package
B
A
MT1 / Cathode
MT2 / Anode
A
MT2 / Anode
Gate / Trigger
MT1 / Cathode
MT2 / Anode
Gate / Trigger
B
C
MT2 / Anode
D
C
Inches
Dimension
A
B
C
D
MIN
0.175
0.542
0.167
0.355
MAX
0.582
0.207
0.395
Millimeters
MIN
MAX
4.45
13.77
14.78
4.24
5.26
9.02
10.03
Inches
Dimension
A
B
C
MIN
0.065
0.353
0.115
MAX
0.095
0.433
0.130
Millimeters
MIN
MAX
1.65
2.41
8.97
11.00
2.92
3.30
©2004 Littelfuse, Inc.
Thyristor Product Catalog
M2 - 5
http://www.littelfuse.com
+1 972-580-7777
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