Type GSA

2 / 4

Bel Fuse Inc.

300 Executive Drive, Suite 300,

West Orange, NJ 07052 USA

+1 201.432.0463

Bel.US.CS@belf.com

belfuse.com/circuit-protection

© 2025 Bel Fuse, Inc.

Rev. GSA Feb2025

Environmental Specifications

Shock Resistance

MIL-STD-202G, Method 213B, Test Condition 1

(100 G's peak for 6 milliseconds; Sawtooth waveform)

Vibration Resistance

MIL-STD-202G, Method 201A (10-55 Hz, 0.06 inch, total excursion).

Salt Spray Resistance

MIL-STD-202G, Method 101E, Test Condition B (48 hrs.).

Insulation Resistance

MIL-STD-202G, Method 302, Test Condition A

(After Opening) 10,000 ohms minimum.

Solderability

MIL-STD-202G, Method 208H

Resistance to solder Heat

MIL-STD-202G, Method 210F, Test Condition B. (260+/-5

℃,10+/-1 sec)

Thermal Shock

MIL-STD-202G, Method 107G, Test Condition B(-65

℃ to +125℃).

Operating Temperature

-55

℃ to +125℃

Terminal Strength

IEC-68-2-21

Electrical Specifications

Consult manufacturer for other ratings

Catalog

Number

Ampere

Rating

Typical Cold

Resistance

(ohms)

Volt-drop

@100%In

(Volt) max.

Voltage and

Interrupting

Ratings

Melting I²T

<10 mSec

(A²Sec)

Melting I²T

@10 In

(A²Sec)

Maximum

Power

Dissipation

(W)

Agency Approvals

GSA 500-R

500mA

1.38

1.07

See Table of

Safety Approvals on

Page 1 for Voltage

and associated

Interrupting Ratings

4.4

5.4

0.78

Y

Y

GSA 600-R

600mA

1.05

0.98

6.9

8.5

0.82

Y

Y

GSA 700-R

700mA

0.648

0.69

8.5

11

0.84

Y

Y

GSA 750-R

750mA

0.642

0.68

10

12

0.85

Y

Y

GSA 1-R

1A

0.374

0.59

16

21

0.91

Y

Y

GSA 1.25-R

1.25A

0.248

0.43

25

32

0.96

Y

Y

GSA 1.6-R

1.6A

0.155

0.38

39

50

1.01

Y

Y

GSA 2-R

2A

0.115

0.36

61

79

1.06

Y

Y

GSA 2.5-R

2.5A

0.079

0.29

94

123

1.12

Y

Y

GSA 3-R

3A

0.058

0.27

146

192

1.18

Y

Y

GSA 4-R

4A

0.039

0.23

226

300

1.24

Y

Y

GSA 5-R

5A

0.029

0.22

349

469

1.31

Y

Y

GSA 6-R

6A

0.018

0.19

286

455

1.61

Y

Y

GSA 7-R

7A

0.016

0.18

372

592

1.81

Y

Y

GSA 8-R

8A

0.013

0.17

483

769

1.95

Y

Y

GSA 10-R

10A

0.010

0.17

817

1300

2.26

Y

Y

GSA 12-R

12A

0.008

0.15

1277

2031

2.56

Y

Y

GSA 15-R

15A

0.006

0.15

2123

3377

2.96

Y

Y

Specifications subject to change without notice