5STP 160 Equivalent & Substitute Parts

Part Overview

The 5STP 160 is a 160 mA, 250 V AC/DC slow-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. Direct replacements and functionally equivalent alternatives are available from active product lines that maintain identical electrical and mechanical specifications.

Substiute Parts

5STP 160

Bel Fuse Inc.In Stock: 10805STP 160 Datasheet

Current PartRFQ

5STP 160-R

Bel Fuse Inc.In Stock: 19955STP 160-R Datasheet

DirectRFQ

0034.3109.PT

SCHURTER Inc.In Stock: 41170034.3109.PT Datasheet

DirectRFQ

0218.160MXEP

Littelfuse Inc.In Stock: 9290218.160MXEP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5STP 160 is determined by strict equivalence across the following critical parameters: current rating (160 mA), voltage rating (250 V AC), fuse type (cartridge glass), response time (slow blow), package dimensions (5mm x 20mm axial), and mounting configuration (through hole). All identified substitute parts meet these core requirements. Secondary parameters including breaking capacity, melting I²t, DC cold resistance, and approval certifications are provided for engineering evaluation but do not disqualify substitution when primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

The 5STP 160-R is the primary direct replacement, manufactured by the same supplier (Bel Fuse Inc.) with identical electrical specifications and active product status. This part is ROHS3 compliant and carries expanded approval certifications (CCC, CE, CSA, cULus, IMQ, SEMKO, VDE) compared to the obsolete 5STP 160.

The 0034.3109.PT (SCHURTER Inc., FST 5x20 series) and 0218.160MXEP (Littelfuse Inc., 218 series) are functionally equivalent alternatives. Both are active products with ROHS3 compliance. Physical dimensions vary slightly: the SCHURTER part measures 5.40mm diameter x 22.50mm length, while the Littelfuse part measures 5.80mm diameter x 22.50mm length, compared to the original 5.50mm x 21.00mm. These dimensional variations remain within the 5mm x 20mm axial package classification and are compatible with standard through-hole mounting footprints. Melting I²t values differ (0.23 for SCHURTER, 0.219 for Littelfuse versus 0.08 for the original), reflecting different thermal response characteristics within the slow-blow classification.

Frequently Asked Questions (FAQ)

Q: Can the 5STP 160-R be used as a direct replacement for the 5STP 160?

A: Yes. The 5STP 160-R maintains identical current rating (160 mA), voltage rating (250 V AC), fuse type (cartridge glass), response time (slow blow), package classification (5mm x 20mm axial), and mounting configuration (through hole). It is the recommended replacement due to identical specifications and active product status.

Q: What are the physical dimension differences between substitute parts?

A: The original 5STP 160 measures 5.50mm diameter x 21.00mm length. The 5STP 160-R maintains these dimensions. The SCHURTER 0034.3109.PT measures 5.40mm diameter x 22.50mm length. The Littelfuse 0218.160MXEP measures 5.80mm diameter x 22.50mm length. All variants fit the 5mm x 20mm axial package classification and are compatible with standard through-hole PCB footprints.

Q: How do melting I²t values affect substitution?

A: Melting I²t indicates thermal energy required to melt the fuse element. The original 5STP 160 and 5STP 160-R both specify 0.08 I²t. The SCHURTER part specifies 0.23 I²t, and the Littelfuse part specifies 0.219 I²t. All parts are classified as slow-blow fuses and meet the 160 mA current rating and 250 V voltage rating. Differences in I²t reflect design variations within the slow-blow category but do not disqualify substitution when electrical ratings align.

Q: What compliance differences exist between the original and substitute parts?

A: The obsolete 5STP 160 is RoHS non-compliant. All active substitutes (5STP 160-R, 0034.3109.PT, 0218.160MXEP) are ROHS3 compliant. The 5STP 160-R and 0218.160MXEP carry broader approval certifications (CCC, CE, CSA, cULus, IMQ, SEMKO, UL, VDE) compared to the SCHURTER part (cURus only). Selection should consider regulatory requirements for the target application.

Q: Are there differences in DC cold resistance between substitute parts?

A: The original 5STP 160 and 5STP 160-R both specify 4.4 Ohms DC cold resistance. The Littelfuse 0218.160MXEP specifies 2.55 Ohms. The SCHURTER 0034.3109.PT does not specify this parameter. DC cold resistance affects voltage drop during normal operation; lower values result in reduced power dissipation.