Lead Form Dimensions

Teccor® brand Thyristors
Lead Form Dimensions
The TO-218, 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 section are available as
standard parts direct from the factory. Custom package
variations are available. Consult the factory for more
information.
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-15 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 package body and the
bend, so that strain on the leads is not transmitted to the
package body.
To designate lead form options, simply indicate the type
number at the end of the Teccor standard part number.
Example: Q4008L465 (Signifies Type 65)
When bending leads in the plane of the leads (spreading),
bend only the narrow part.
See “Description of Part Numbers” in the Product
Selection Guide of this catalog for a complete description
of Teccor part numbers.
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Sharp angle bends should be done only once, as repetitive
bending will fatigue and break the leads.
351
Lead Form Dimensions
Lead Dimensions
Lead Form Dimensions
Teccor® brand Thyristors
Lead Form Dimensions
TO-220 Type 51 — R or L Package
TO-220 Type 53 — R or L Package
Replaces RCA 6249
Mounting Tab
Common to
MT2 / Anode
for Non-isolated
R Package
Mounting Tab
Common to
MT2 / Anode
for Non-isolated
R Package
B
C
A
MT1 / Cathode
MT2 / Anode
MT2 / Anode
Gate / Trigger
MT2 / Anode
A
B
C
Gate
D
Ref Only
MT1 / Cathode
Dimension
Inches
Dimension
Millimeters
Min
Max
A
0.320
0.340
B
0.190
C
0.795
Millimeters
Max
Min
Max
Min
Max
A
0.175
8.13
8.64
B
0.542
0.582
13.77
14.78
C
0.167
0.207
4.24
5.26
D
0.355
0.395
9.02
10.03
4.83
0.850
Inches
Min
20.19
21.59
TO-220 Type 52 — R or L Package
4.45
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
C
D
A
Gate / Trigger
A
MT2 / Anode
Gate
MT1 / Cathode
B
MT1 / Cathode
Inches
Dimension
Min
Millimeters
Max
Min
Max
A
0.169
0.189
4.29
4.80
B
0.040
0.060
1.02
1.52
C
0.250
D
0.110
Lead Form Dimensions
Dimension
6.35
0.170
2.79
Inches
Millimeters
Min
Max
Min
Max
A
0.040
0.070
1.02
1.78
B
0.500
12.70
4.32
352
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Teccor® brand Thyristors
TO-220 Type 55 — R or L Package
TO-220 Type 57 — R Package
Replaces G.E. Type 5
Similar to TO-66, Gate-Cathode Reversed
Mounting Tab
Common to
MT2 / Anode
for Non-isolated
R Package
Lead Dimensions
Lead Form Dimensions
MT2 / Anode
A
B
MT1 / Cathode
MT2 / Anode
Gate / Trigger
B
Gate
A
C
MT1 / Cathode
MT2 / Anode
Dimension
Inches
C
Millimeters
Min
Max
Min
Dimension
Max
Inches
Millimeters
Min
Max
Min
Max
0.040
0.070
1.02
1.78
A
0.065
0.095
1.65
2.41
A
B
0.353
0.433
8.97
11.00
B
0.570
0.590
14.48
14.99
C
0.115
0.130
2.92
3.30
C
0.340
0.422
8.64
10.72
TO-220 Type 56 — R or L Package
TO-220 Type 58 — R or L Package
Replaces G.E. Type 6, Motorola Lead Form 3, RCA 6221
Mounting Tab
Common to
MT2 / Anode
for Non-isolated
R Package
Mounting Tab
Common to
MT2 / Anode
for Non-isolated
R Package
B
A
A
Gate / Trigger
MT2 / Anode
B
MT2 / Anode
MT1 / Cathode
C
Gate
MT2 / Anode
C
MT2 / Anode
D
MT1 / Cathode
Dimension
Inches
Dimension
Millimeters
Inches
Min
Millimeters
Max
Min
Max
Min
Max
Min
Max
A
0.175
A
0.570
0.590
14.48
14.99
B
0.542
0.582
13.77
14.78
B
0.120
0.130
3.05
3.30
C
0.167
0.207
4.24
5.26
C
0.172
0.202
4.37
5.13
D
0.355
0.395
9.02
10.03
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
353
4.45
Lead Form Dimensions
Teccor® brand Thyristors
Lead Form Dimensions
TO-220 Type 59 — R or L Package
TO-220 Type 67 — R Package
Surface Mount
Mounting Tab
Common to
MT2 / Anode
for Non-isolated
R Package
This Footprint
Optional
0.270
B
A
MT2 /
Anode
D
MT2 / Anode
0.460
A
0.170
0.860
0.115
0.230
B
MT1 / Cathode
C
0.150
Gate
D
MT2 / Anode
0.155
0.050 TYP
Gate
MT1 / Cathode
Pad Outline
C
Inches
Dimension
Millimeters
Min
Max
Min
Max
A
0.685
0.725
17.40
18.42
B
0.558
0.598
14.17
15.19
C
0.375
9.53
D
0.250
6.35
Dimension
Inches
Millimeters
Min
Max
Min
Max
A
0.780
0.850
19.05
21.59
B
0.080
0.100
2.03
2.54
C
0.110
0.130
2.79
3.30
D
0.013
0.33
TO-220 Type 65 — R or L Package
TO-220 Type 68 — R or L Package
Replaces RCA 6210
Surface Mount
Mounting Tab
Common to
MT2 / Anode
for Non-isolated
R Package
Mounting Tab
Common to
MT2 / Anode
for Non-isolated
R Package
0.460
B
This Footprint
Optional
0.270
A
0.170
0.860
D
0.115
0.230
MT1 / Cathode
MT2 / Anode
B
C
A
Gate / Trigger
MT2 / Anode
Gate / Trigger
0.045
0.055 TYP
Inches
MT2 / Anode
Pad Outline
Millimeters
Min
Max
Min
Max
A
0.550
0.580
12.70
14.27
B
0.820
0.260
14.73
15.75
C
0.530
0.570
7.62
D
0.080
0.120
2.03
Dimension
3.05
354
Inches
Millimeters
Min
Max
Min
Max
A
0.780
0.850
19.05
21.59
B
0.080
0.100
2.03
2.54
C
0.110
0.130
2.79
3.30
D
Lead Form Dimensions
0.050 TYP
MT1 / Cathode
D
Dimension
C
.150
0.013
0.33
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Teccor® brand Thyristors
TO-92 Type 70 — E Package
Lead Dimensions
Lead Form Dimensions
TO-218 Type 81 — K, M, J, or W Packages
SIDAC Only
Mounting Tab Common to
MT2 / Anode on W Package
Flat
Side
A
A
B
MT1 / Pin 1
MT1 / Cathode
MT2 / Pin 3
Inches
Dimension
Millimeters
Min
Max
A
Min
0.060
B
Dimension
0.50
MT2 / Anode
B
Gate
Inches
Millimeters
Min
Max
Min
Max
Max
A
0.080
0.120
2.03
3.05
1.52
B
0.580
0.640
14.73
16.26
12.7
TO-218 Type 82 — M and W Packages
TO-92 Type 75 — E Package
Replaces TO-5 Pinout
Mounting Tab
Common to
MT2 / Anode
Flat Side
D TYP
A
A
Gate / Pin 2
B
MT1 / Cathode / Pin 1
B
Gate / Pin 2
C
Gate
MT1 / Cathode
MT2 / Anode / Pin 3
F
C
E
Dimension
A
Inches
Min
Dimension
Millimeters
Max
0.400
Min
Max
Max
Min
Max
0.095
2.41
B
0.080
0.120
2.03
3.05
12.70
C
0.580
0.640
14.73
16.26
0.500
C
0.080
0.120
D
0.045
0.085
1.14
2.16
E
0.180
0.220
4.57
5.59
F
0.080
0.120
2.03
3.05
©2008 Littelfuse, Inc.
Min
A
Millimeters
10.16
B
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Inches
2.03
3.05
355
Lead Form Dimensions