300

Revised: December 9, 2010 02:31 PM

©2010 Littelfuse, Inc

Specifications are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

55 Amp Standard SCRs

Sxx55x Series

Physical Specifications

Environmental Specifications

Test

Specifications and Conditions

AC Blocking

MIL-STD-750, M-1040, Cond A Applied

Peak AC voltage @ 125°C for 1008 hours

Temperature Cycling

MIL-STD-750, M-1051,

100 cycles; -40°C to +150°C;

15-min dwell-time

Temperature/

Humidity

EIA / JEDEC, JESD22-A101

1008 hours; 320V - DC: 85°C;

85% rel humidity

High Temp Storage

MIL-STD-750, M-1031,

1008 hours; 150°C

Low-Temp Storage

1008 hours; -40°C

Thermal Shock

MIL-STD-750, M-1056

10 cycles; 0°C to 100°C; 5-min dwelltime

at each temperature; 10 sec (max) transfer

time between temperature

Autoclave

EIA / JEDEC, JESD22-A102

168 hours (121°C at 2 ATMs) and

100% R/H

Resistance to

Solder Heat

MIL-STD-750 Method 2031

Solderability

ANSI/J-STD-002, category 3, Test A

Lead Bend

MIL-STD-750, M-2036 Cond E

Terminal Finish

100% Matte Tin-plated

Body Material

UL recognized epoxy meeting flammability

classification 94V-0

Lead Material

Copper Alloy

Design Considerations

Careful selection of the correct device for the application’s

operating parameters and environment will go a long way

toward extending the operating life of the Thyristor. Good

design practice should limit the maximum continuous

current through the main terminals to 75% of the device

rating. Other ways to ensure long life for a power discrete

semiconductor are proper heat sinking and selection of

voltage ratings for worst case conditions. Overheating,

overvoltage (including dv/dt), and surge currents are

the main killers of semiconductors. Correct mounting,

soldering, and forming of the leads also help protect

against component damage.

Dimensions — TO-220AB (R-Package) — Non-Isolated Mounting Tab Common with Center Lead

Dimension

Inches

Millimeters

Min

Max

Min

Max

A

0.380

0.420

9.65

10.67

B

0.105

0.115

2.67

2.92

C

0.230

0.250

5.84

6.35

D

0.590

0.620

14.99

15.75

E

0.142

0.147

3.61

3.73

F

0.110

0.130

2.79

3.30

G

0.540

0.575

13.72

14.61

H

0.025

0.035

0.64

0.89

J

0.195

0.205

4.95

5.21

K

0.095

0.105

2.41

2.67

L

0.060

0.075

1.52

1.91

M

0.085

0.095

2.16

2.41

N

0.018

0.024

0.46

0.61

O

0.178

0.188

4.52

4.78

P

0.045

0.060

1.14

1.52

R

0.038

0.048

0.97

1.22

K

J

A

H

G

B

F

E

C

D

L

R

T

ANODE

O

P

N

M

.276

7.01

.526

13.36

.320

8.13

NOTCH IN

GATE LEAD

TO ID.

NON-ISOLATED

TAB

GATE

CATHODE

ANODE

Note: Maximum torque to

be applied to mounting tab

is 8 in-lbs. (0.904 Nm).