
328
Revised: 09/23/13
©2013 Littelfuse, Inc
Specifications are subject to change without notice.
Teccor
®
brand Thyristors
55 Amp Standard SCRs
Sxx55x Series
Dimensions – TO-218AC (M Package) — Non-isolated Mounting Tab Common with Center Lead
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 0.211 0.219 5.36 5.56
L 0.422 0.437 10.72 11.10
M 0.058 0.068 1.47 1.73
N 0.045 0.055 1.14 1.40
P 0.095 0.115 2.41 2.92
Q 0.008 0.016 0.20 0.41
R 0.008 0.016 0.20 0.41
U 0.164 0.165 4.10 4.20
W 0.085 0.095 2.17 2.42
C
D
H
G
F
B
A
E
T
c
Measurement Point
U (diameter)
ANODE
P
GATE
J
ANODE
CATHODE
M
N
K
L
R
Q
Note: Maximum torque
to be applied to mounting
tab is 8 in-lbs. (0.904 Nm).
W
Product Selector
Part Number
Voltage
Gate Sensitivity Type Package
400V 600V 800V 1000V
Sxx55R XXXX 40mA Standard SCR TO-220R
Sxx55N XXXX 40mA Standard SCR TO-263
Sxx55W X X X 40mA Standard SCR TO-218X
Sxx55M XXXX 40mA Standard SCR TO-218AC
Note: xx = Voltage
Packing Options
Part Number Marking Weight Packing Mode Base Quantity
Sxx55R Sxx55R 2.2g Bulk 500
Sxx55RTP Sxx55R 2.2g Tube 500 (50 per tube)
Sxx55NTP Sxx55N 1.6g Tube 500 (50 per tube)
Sxx55NRP Sxx55N 1.6g Embossed Carrier 500
Sxx55WTP Sxx55W 5.23g Tube 250 (25 per tube)
Sxx55MTP Sxx55M 4.40g Tube 250 (25 per tube)
Note: xx = Voltage
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