Equivalent & Substitute Parts for 5HFP 1.6

Part Overview

The 5HFP 1.6 is a 1.6 A ceramic cartridge fuse rated for 250 V AC/DC operation in a 5mm x 20mm through-hole axial package. Manufactured by Bel Fuse Inc., this fast-blow fuse is designed for circuit protection applications requiring precise current limiting with a 1.5 kA breaking capacity. The main part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for seamless circuit board integration.

Substiute Parts

5HFP 1.6

Bel Fuse Inc.In Stock: 8335HFP 1.6 Datasheet

Current PartRFQ

5HF 2-R

Bel Fuse Inc.In Stock: 25195HF 2-R Datasheet

DirectRFQ

5HFP 1.6-R

Bel Fuse Inc.In Stock: 41475HFP 1.6-R Datasheet

DirectRFQ

021601.6MXEP

Littelfuse Inc.In Stock: 1619021601.6MXEP Datasheet

DirectRFQ

021601.6MXESPP

Littelfuse Inc.In Stock: 691021601.6MXESPP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5HFP 1.6 is determined by strict equivalence across the following critical parameters: current rating (1.6 A), voltage rating (250 V AC), fuse type (ceramic cartridge), package dimensions (5mm x 20mm axial), mounting configuration (through-hole), response characteristic (fast-blow), and breaking capacity (1.5 kA). Parts meeting all these criteria are classified as direct electrical and mechanical equivalents. The 5HFP 1.6-R (Bel Fuse Inc.) and 021601.6MXEP / 021601.6MXESPP (Littelfuse Inc.) satisfy these requirements and are listed as active alternatives to the obsolete main part.

Parameter Comparison

Engineering Selection Recommendations

For new designs and production restocking, the 5HFP 1.6-R (Bel Fuse Inc.) is the primary recommended substitute, offering identical electrical and mechanical specifications with active product status and ROHS3 compliance. The Littelfuse alternatives 021601.6MXEP and 021601.6MXESPP provide equivalent functional performance and are suitable where Littelfuse supply chain integration is preferred. All three substitutes maintain the same current rating, voltage rating, package geometry, and breaking capacity as the obsolete 5HFP 1.6, ensuring direct compatibility in existing circuit designs without modification to PCB layouts or holder specifications.

Frequently Asked Questions (FAQ)

Q: Can the 5HFP 1.6-R be used as a direct replacement for the 5HFP 1.6?

A: Yes. The 5HFP 1.6-R is electrically and mechanically identical to the 5HFP 1.6, with matching current rating (1.6 A), voltage rating (250 V AC), package dimensions (5mm x 20mm axial), and through-hole mounting configuration. The primary difference is product status: 5HFP 1.6-R is active and ROHS3 compliant.

Q: What is the difference between the Bel Fuse and Littelfuse alternatives?

A: All three substitutes meet the core electrical and mechanical requirements. The Bel Fuse 5HFP 1.6-R maintains the same series designation as the main part. The Littelfuse parts (021601.6MXEP and 021601.6MXESPP) are from different series (216 and 216SP respectively) but provide equivalent performance. Selection depends on supply chain availability and preferred manufacturer.

Q: Are there any dimensional differences between these parts?

A: Minor dimensional variations exist within tolerance. The 5HFP 1.6 and 5HFP 1.6-R measure 0.217" diameter x 0.827" length (5.50mm x 21.00mm). The Littelfuse 021601.6MXEP measures 0.228" diameter x 0.886" length (5.80mm x 22.50mm), and the 021601.6MXESPP measures 0.205" diameter x 0.787" length (5.20mm x 20.00mm). All fit standard 5mm x 20mm fuse holders designed for axial cartridge fuses.

Q: Do all substitutes carry the same regulatory approvals?

A: The main part 5HFP 1.6 carries CCC, CE, CSA, IMQ, PSE, SEMKO, and UL approvals. The 5HFP 1.6-R adds cURus and VDE. The Littelfuse 021601.6MXEP includes CCC, CE, CSA, KC, PSE, SEMKO, UL, and VDE. The 021601.6MXESPP carries CE, CSA, CQC, KC, PSE, UR, and VDE. Verify specific regulatory requirements for your application region.

Q: What is the melting I²t specification, and does it affect substitution?

A: Melting I²t indicates the thermal energy required to melt the fuse element. The 5HFP 1.6 specifies 2.1, the 5HFP 1.6-R specifies 2.1, while the Littelfuse parts specify 1.005. These variations reflect different fuse element designs but do not prevent substitution, as all parts maintain the same 1.6 A current rating and fast-blow response characteristic.