Revised: 12/09/15

Specifications are subject to change without notice.

©2015 Littelfuse, Inc

40 Amp Low T

S4040xQx Series

Dimension

Inches

Millimeters

Min

Max

Min

Max

A

0.360

0.370

9.14

9.40

B

0.380

0.420

9.65

10.67

C

0.178

0.188

4.52

4.78

D

0.025

0.035

0.63

0.89

E

0.048

0.055

1.22

1.40

F

0.060

0.075

1.52

1.91

G

0.095

0.105

2.41

2.67

H

0.083

0.093

2.11

2.36

J

0.018

0.024

0.46

0.61

K

0.090

0.110

2.29

2.79

S

0.590

0.625

14.99

15.87

V

0.035

0.045

0.89

1.14

U

0.002

0.010

0.05

0.25

W

0.040

0.070

1.02

1.78

G

B

A

W

D

F

V

S

CATHODE

ANODE

T

C

E

K

H

J

U

.320

8.13

.276

7.01

.331

8.41

GATE

.460

11.68

.665

16.89

.260

6.60

.150

3.81

.080

2.03

.085

2.16

.055

1.40

.350

8.89

.276

7.01

.276

7.01

AREA: 0.11 in 2

Part Numbering System

Part Marking System

Date Code Marking

Y:Year Code

M: Month Code

XXX: Lot Trace Code

TO-220 AB - (R Package)

TO-263 (N Package)

®

M

Y

S4040RQ

56

DEVICE TYPE

S: SCR

xx: Lead Form Option

PACKAGE TYPE

R: TO-220 (Non-isolated)

N: TO-263 (D

CURRENT RATING

Lead Form Dimensions

40: 40A

VOLTAGE RATING

40: 400V

TURN-OFF TIME

S 4040 R

[blank]: 15s

2 - Pak)

Q

2: 12s

3: 5s

LOW TURN OFF TIME TYPE

7