Type MRT

2 / 4

Bel Fuse Inc.

206 Van Vorst Street

Jersey City, NJ 07302 USA

+1 201.432.0463

Bel.US.CS@belf.com

belfuse.com/circuit-protection

© 2021 Bel Fuse, Inc.

Rev. MRT Oct2021

Environmental Specifications

High temperature storage

MIL-STD-202 Method 108

Temperature cycling

JESD22 Method JA-104,Test Condition B

Biased humidity

MIL-STD-202 Method 103, 85C/85% RH with

10% operating power for 1000 hrs.

Operational life

MIL-STD-202 Method 108, Test Condition D

Resistance to solvents

MIL-STD-202 Method 215

Mechanical shock

MIL-STD-202 Method 213,Test Condition C

Vibration

MIL-STD-202 Method 204

Resistance to soldering

heat

MIL-STD-202 Method 210,Test condition B

Thermal shock

MIL-STD-202 Method 107

Solderability

J-STD-002

Board flex(SMD)

AEC-Q200-005

Terminal strength

AEC-Q200-006

Electrical characterization

3 temperature electrical

Electrical Specifications

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

MRT 80

80mA

3.5

0.398

See Table

of Safety

Approvals

on Page 1

for Voltage

and

associated

Interrupting

Ratings

0.01

0.01

0.10

Y

Y

Y

Y

Y

MRT 100

100mA

2.3

0.329

0.02

0.02

0.11

Y

Y

Y

Y

Y

MRT 125

125mA

1.6

0.295

0.04

0.04

0.13

Y

Y

Y

Y

Y

MRT 160

160mA

1.1

0.252

0.07

0.06

0.15

Y

Y

Y

Y

Y

MRT 200

200mA

0.73

0.200

0.12

0.11

0.17

Y

Y

Y

Y

Y

MRT 250

250mA

0.55

0.188

0.38

0.41

0.19

Y

Y

Y

Y

Y

MRT 315

315mA

0.36

0.152

0.60

0.66

0.22

Y

Y

Y

Y

Y

MRT 400

400mA

0.25

0.129

0.90

1.0

0.25

Y

Y

Y

Y

Y

MRT 500

500mA

0.18

0.114

1.5

1.7

0.29

Y

Y

Y

Y

Y

MRT 630

630mA

0.13

0.109

2.4

2.6

0.33

Y

Y

Y

Y

Y

MRT 800

800mA

0.095

0.103

3.7

4.2

0.38

Y

Y

Y

Y

Y

MRT 1

1A

0.070

0.090

6

7

0.44

Y

Y

Y

Y

Y

Y

MRT 1.25

1.25A

0.053

0.087

9

11

0.51

Y

Y

Y

Y

Y

Y

MRT 1.6

1.6A

0.038

0.085

15

17

0.58

Y

Y

Y

Y

Y

Y

MRT 2

2A

0.029

0.084

23

27

0.67

Y

Y

Y

Y

Y

Y

MRT 2.5

2.5A

0.022

0.084

37

43

0.77

Y

Y

Y

Y

Y

Y

MRT 3.15

3.15A

0.017

0.074

58

69

0.88

Y

Y

Y

Y

Y

Y

MRT 4

4A

0.013

0.073

92

110

1.02

Y

Y

Y

Y

Y

Y

MRT 5

5A

0.010

0.073

145

175

1.17

Y

Y

Y

Y

Y

Y

MRT 6.3

6.3A

0.008

0.072

230

281

1.34

Y

Y

Y

Y

Y

MRT 8

8A

0.006

0.073

280

350

2.40

Y

Y

Y

MRT 10

10A

0.0042

0.070

300

400

1.60

Y

Y

Y

Consult manufacturer for other ratings

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 X 3 axis / no load).

Salt Spray

Resistance

MIL-STD-202G, Method 101E, Test

Condition B (48 hrs.).

Solderability

MIL-STD-202G, Method 208H

Resistance to solder

Heat

MIL-STD-202G, Method 210F, Test

Condition C. Top Side. (260

℃,20 sec)

Moisture Resistance

MIL-STD-202G, Method 202G, Method

106G

Operating

Temperature

-55

℃ to +125℃

Specifications subject to change without notice