Type 5HT / 5HTP

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. 5HT 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 B

(After Opening) 100,000 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

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

5HT(P) 250-R

250mA

3.41

1.16

See Table of

Safety

Approvals on

Page 1 for

Voltage and

associated

Interrupting

Ratings

0.10

0.12

0.34

Y

Y

Y

5HT(P) 315-R

315mA

2.08

0.90

0.18

0.22

0.38

Y

Y

Y

5HT(P) 400-R

400mA

1.47

0.73

0.28

0.34

0.41

Y

Y

Y

5HT(P) 500-R

500mA

1.03

0.66

0.46

0.58

0.48

Y

Y

Y

5HT(P) 630-R

630mA

0.63

0.51

0.70

0.90

0.55

Y

Y

Y

5HT(P) 800-R

800mA

0.39

0.40

1.1

1.5

0.64

Y

Y

Y

5HT(P) 1-R

1A

0.20

0.25

1.7

1.7

0.73

Y

Y

Y

Y

5HT(P) 1.25-R

1.25A

0.14

0.24

3

3

0.81

Y

Y

Y

Y

5HT(P) 1.6-R

1.6A

0.095

0.19

5

6

0.91

Y

Y

Y

Y

5HT(P) 2-R

2A

0.069

0.18

10

11

1.00

Y

Y

Y

Y

5HT(P) 2.5-R

2.5A

0.047

0.16

17

20

1.10

Y

Y

Y

Y

5HT(P) 3.15-R

3.15A

0.031

0.13

31

38

1.20

Y

Y

Y

Y

5HT(P) 4-R

4A

0.020

0.10

56

69

1.40

Y

Y

Y

Y

5HT(P) 5-R

5A

0.015

0.10

101

128

1.50

Y

Y

Y

Y

5HT(P) 6.3-R

6.3A

0.012

0.10

181

237

1.70

Y

Y

Y

Y

5HT(P) 8-R

8A

0.008

0.09

330

439

2.70

Y

Y

Y

Y

5HT(P) 10-R

10A

0.007

0.09

601

812

2.90

Y

Y

Y

Y

Consult manufacturer for other ratings

Specifications subject to change without notice