5HF 800 Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The 5HF 800 is an 800 mA, 250 V AC/DC ceramic cartridge fuse manufactured by Bel Fuse Inc. in a 5mm x 20mm form factor. This part is classified as obsolete and requires a holder for installation. Due to its obsolete status, equivalent and substitute parts from active product lines are necessary for ongoing system maintenance and new designs requiring compatible fuse protection.

Key Parameters

Parameter	Value
Current Rating	800 mA
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Ceramic
Package / Case	5mm x 20mm
Response Time	Fast Blow
Breaking Capacity @ Rated Voltage	1.5 kA
Mounting Type	Requires Holder
Operating Temperature Range	-55°C to 125°C

Substitute Part Grouping Explanation

Substitution of the 5HF 800 is determined by strict equivalence in the following parameters:

Current Rating: 800 mA (exact match required)
Voltage Rating: 250 V AC (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Fuse Type: Cartridge, Ceramic (exact match required)
Response Time: Fast Blow (exact match required)
Breaking Capacity: 1.5 kA (exact match required)
Mounting Type: Requires Holder (exact match required)

All substitute parts listed maintain these core electrical and mechanical parameters. Variations in secondary parameters such as melting I²t, DC cold resistance, and approval agencies do not preclude substitution when primary parameters are identical.

Parameter Comparison

Part Number	Manufacturer	Current Rating	Voltage Rating (AC)	Package	Response Time	Breaking Capacity	Mounting Type	Product Status	RoHS Status
5HF 800	Bel Fuse Inc.	800 mA	250 V	5mm x 20mm	Fast Blow	1.5 kA	Requires Holder	Obsolete	RoHS non-compliant
5HF 800-R	Bel Fuse Inc.	800 mA	250 V	5mm x 20mm	Fast Blow	1.5 kA	Requires Holder	Active	ROHS3 Compliant
5HFP 800-R	Bel Fuse Inc.	800 mA	250 V	5mm x 20mm (Axial)	Fast Blow	1.5 kA	Through Hole	Active	ROHS3 Compliant
0216.800HXP	Littelfuse Inc.	800 mA	250 V	5mm x 20mm	Fast Blow	1.5 kA	Requires Holder	Active	ROHS3 Compliant
0216.800MXP	Littelfuse Inc.	800 mA	250 V	5mm x 20mm	Fast Blow	1.5 kA	Requires Holder	Active	ROHS3 Compliant
0216.800TXP	Littelfuse Inc.	800 mA	250 V	5mm x 20mm	Fast Blow	1.5 kA	Requires Holder	Active	ROHS3 Compliant
0216.800VXP	Littelfuse Inc.	800 mA	250 V	5mm x 20mm	Fast Blow	1.5 kA	Requires Holder	Active	ROHS3 Compliant
GDA-800MA	Eaton - Electronics Division	800 mA	250 V	5mm x 20mm	Fast Blow	1.5 kA	Requires Holder	Active	Not specified
S501-800-R	Eaton - Electronics Division	800 mA	250 V	5mm x 20mm	Fast Blow	1.5 kA	Requires Holder	Active	ROHS3 Compliant

Engineering Selection Recommendations

For direct replacement of the obsolete 5HF 800, the 5HF 800-R from Bel Fuse Inc. is the primary equivalent. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance.

Littelfuse 216 series parts (0216.800HXP, 0216.800MXP, 0216.800TXP, 0216.800VXP) provide functionally equivalent substitution with active status and ROHS3 compliance. All maintain the required holder-based mounting configuration.

The 5HFP 800-R from Bel Fuse Inc. differs in mounting type (through hole vs. requires holder) and package designation (axial), making it suitable only for applications where PCB-mounted through-hole installation is required.

Eaton parts GDA-800MA and S501-800-R are functionally equivalent with active status. The S501-800-R offers ROHS3 compliance and broader approval agency coverage.

Frequently Asked Questions (FAQ)

Q: Can the 5HFP 800-R replace the 5HF 800 directly?

A: The 5HFP 800-R differs in mounting type and package configuration. The 5HF 800 requires a holder for installation, while the 5HFP 800-R is designed for through-hole PCB mounting. Direct substitution is not possible without circuit board redesign.

Q: Are all Littelfuse 216 series 800 mA fuses interchangeable?

A: The 0216.800HXP, 0216.800MXP, 0216.800TXP, and 0216.800VXP all meet the electrical and mechanical parameters of the 5HF 800. They are interchangeable within the same holder-based mounting configuration.

Q: What is the difference between Bel Fuse 5HF 800 and 5HF 800-R?

A: Both parts are identical in electrical and mechanical specifications. The primary difference is product status: 5HF 800 is obsolete, while 5HF 800-R is active. The 5HF 800-R also carries ROHS3 compliance.

Q: Can I use Eaton GDA-800MA or S501-800-R as replacements?

A: Yes. Both Eaton parts maintain all required electrical and mechanical parameters. The S501-800-R offers additional advantage of ROHS3 compliance and broader approval agency certifications.

Q: Are there any compatibility concerns with different manufacturers?

A: No. All substitute parts listed maintain identical current rating, voltage rating, package dimensions, response time, and breaking capacity. Holder compatibility is determined by the 5mm x 20mm package standard.

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