5SFP 160-R Equivalent & Substitute Parts

Part Overview

The 5SFP 160-R is a 160 mA, 250 V AC/DC fast-blow glass cartridge fuse with a 5mm x 20mm axial form factor, manufactured by Bel Fuse Inc. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. Substitute parts must maintain identical electrical ratings, mechanical dimensions, and approval certifications to ensure direct compatibility in existing circuit designs.

Substiute Parts

5SFP 160-R

Bel Fuse Inc.In Stock: 7445SFP 160-R Datasheet

Current PartRFQ

0034.1508.PT

SCHURTER Inc.In Stock: 37810034.1508.PT Datasheet

DirectRFQ

BK/S500-V-160-R

Eaton - Electronics DivisionIn Stock: 1008BK/S500-V-160-R Datasheet

DirectRFQ

0217.160MXEP

Littelfuse Inc.In Stock: 8530217.160MXEP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5SFP 160-R are classified based on the degree of electrical and mechanical compatibility:

Direct Substitutes maintain all critical parameters within acceptable tolerances:

• Current Rating: 160 mA (exact match)
• Voltage Rating: 250 V AC (exact match)
• Fuse Type: Cartridge, Glass (exact match)
• Response Time: Fast Blow (exact match)
• Package: 5mm x 20mm (exact match)
• Breaking Capacity: 35 A (exact match)
• Mounting: Through Hole (exact match)

Similar Substitutes meet all electrical requirements and mechanical form factor but may have minor dimensional or performance variations within acceptable engineering tolerances.

The following parts satisfy these criteria: 0034.1508.PT (SCHURTER Inc.), BK/S500-V-160-R (Eaton - Electronics Division), and 0217.160MXEP (Littelfuse Inc.).

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are active products with current manufacturing availability, addressing the obsolescence of the 5SFP 160-R.

0034.1508.PT (SCHURTER Inc., FSF 5x20 Series) is approved by cURus and maintains ROHS3 compliance. This part exhibits the lowest melting I²t value (0.0113) among the substitutes, indicating the fastest thermal response. Inventory availability is 3770 units.

BK/S500-V-160-R (Eaton - Electronics Division, S500 Series) carries the broadest approval agency coverage, including BSI, CCC, CSA, cULus, IMQ, SEMKO, and VDE. This part has the highest DC cold resistance (9.1 Ohms) and the lowest melting I²t (0.008), providing the most sensitive thermal protection. Inventory availability is 925 units.

0217.160MXEP (Littelfuse Inc., 217 Series) is approved by CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE, with UL certification included. DC cold resistance (2.525 Ohms) closely matches the original 5SFP 160-R (2.5 Ohms). Inventory availability is 787 units.

Selection should prioritize the substitute part whose approval certifications align with the target application's regulatory requirements and the system's thermal protection strategy.

Frequently Asked Questions (FAQ)

Q: Can 0034.1508.PT, BK/S500-V-160-R, and 0217.160MXEP be used interchangeably with the 5SFP 160-R?

A: All three parts meet the core electrical specifications (160 mA, 250 V AC, fast-blow response, 35 A breaking capacity) and mechanical form factor (5mm x 20mm through-hole). However, differences in melting I²t and DC cold resistance may affect thermal response characteristics. Selection should be based on the specific thermal protection requirements of the application and required approval certifications.

Q: What is the significance of melting I²t variation among these parts?

A: Melting I²t defines the thermal energy required to melt the fuse element. Lower values indicate faster thermal response. The 5SFP 160-R has a melting I²t of 0.017, while substitutes range from 0.008 to 0.0113. This variation may impact circuit protection timing and should be evaluated against application requirements.

Q: Are there dimensional differences between these parts?

A: All parts conform to the 5mm x 20mm package specification. Minor dimensional variations exist: the 5SFP 160-R measures 0.217" Dia x 0.827" L, while substitutes range from 0.213" to 0.236" Dia and 0.831" to 0.886" L. These variations remain within standard cartridge fuse tolerances and do not affect mechanical compatibility in standard fuse holders.

Q: Which substitute has the closest DC cold resistance to the original 5SFP 160-R?

A: The 0217.160MXEP (Littelfuse) has a DC cold resistance of 2.525 Ohms, which closely matches the original 5SFP 160-R at 2.5 Ohms. The 0034.1508.PT does not specify DC cold resistance. The BK/S500-V-160-R has a significantly higher resistance of 9.1 Ohms.

Q: What approval certifications should I prioritize for my application?

A: Certification requirements depend on the target market and application. The BK/S500-V-160-R offers the broadest coverage (BSI, CCC, CSA, cULus, IMQ, SEMKO, VDE). The 0217.160MXEP includes UL certification. The 0034.1508.PT carries cURus approval. Verify that the selected substitute meets the specific regulatory requirements for your application region and industry.