Bel Fuse Inc. 5HFP 250 Ceramic Fuse - Equivalent & Substitute Parts

Part Overview

The Bel Fuse Inc. 5HFP 250 is a 250 mA, 250 V AC/DC ceramic cartridge fuse with fast-blow response characteristics, designed for through-hole mounting in 5mm x 20mm axial package configuration. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. Substitute parts must maintain identical electrical ratings and mechanical compatibility to ensure proper circuit protection without redesign requirements.

Substiute Parts

5HFP 250

Bel Fuse Inc.In Stock: 11035HFP 250 Datasheet

Current PartRFQ

0216.250MXEP

Littelfuse Inc.In Stock: 56400216.250MXEP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5HFP 250 is determined by strict equivalence across the following critical parameters:

• Current Rating: 250 mA (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Fast Blow (exact match required)
• Package Dimensions: 5mm x 20mm axial configuration (exact match required)
• Mounting Type: Through Hole (exact match required)
• Breaking Capacity: 1.5 kA minimum (exact match required)
• Operating Temperature: -55°C ~ 125°C (exact match required)

Substitute parts must satisfy all parameters listed above without exception. Physical dimensions, electrical characteristics, and thermal performance must align precisely to ensure direct replacement capability without circuit modification or performance degradation.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse Inc. 0216.250MXEP qualifies as a direct functional equivalent to the obsolete Bel Fuse Inc. 5HFP 250 based on complete electrical and mechanical parameter alignment. All critical specifications—current rating, voltage rating, fuse type, response time, package configuration, mounting type, breaking capacity, and operating temperature range—are identical between the two components.

The 0216.250MXEP offers additional advantages for new designs and ongoing procurement: active product status ensures long-term availability, ROHS3 compliance satisfies current regulatory requirements, and expanded certification coverage (SEMKO, UR, VDE) provides broader market acceptance. The substitute part is suitable for direct replacement in existing applications without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0216.250MXEP be used as a direct replacement for the Bel Fuse 5HFP 250?

A: Yes. Both components share identical electrical ratings (250 mA, 250 V AC), fuse type (ceramic cartridge), response characteristics (fast blow), package dimensions (5mm x 20mm axial), and breaking capacity (1.5 kA). Direct substitution is supported without design changes.

Q: Are there physical dimension differences between these parts?

A: The nominal package specification is 5mm x 20mm for both parts. The 5HFP 250 measures 0.217" diameter x 0.827" length (5.50mm x 21.00mm), while the 0216.250MXEP measures 0.236" diameter x 0.886" length (6.00mm x 22.50mm). These minor dimensional variations remain within standard axial cartridge fuse tolerances and do not affect through-hole mounting compatibility.

Q: What is the difference in DC cold resistance between these parts?

A: The 5HFP 250 has a DC cold resistance of 1.05 Ohms, while the 0216.250MXEP has 2.35 Ohms. This difference does not affect circuit protection performance, as fuse selection is based on current and voltage ratings, not cold resistance.

Q: Does the Littelfuse substitute meet current compliance standards?

A: Yes. The 0216.250MXEP is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The obsolete 5HFP 250 is RoHS non-compliant, making the substitute preferable for new designs and long-term procurement.

Q: Are the approval certifications equivalent?

A: The 0216.250MXEP carries expanded certifications (CCC, CE, CSA, SEMKO, UR, VDE) compared to the 5HFP 250 (CCC, CE, CSA, UL). The substitute meets or exceeds all certifications of the original part.