5ST 160 Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Bel Fuse Inc. 5ST 160 is a 160 mA, 250 V AC/DC slow-blow glass cartridge fuse in 5mm x 20mm form factor, designed for circuit protection in industrial and commercial applications. This part is classified as obsolete. Equivalent and substitute parts are available from active manufacturers including Littelfuse Inc., SCHURTER Inc., and Eaton Electronics Division, offering direct functional replacement with improved availability and compliance status.

Key Parameters

Parameter	Value
Current Rating	160 mA
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Slow Blow
Package / Case	5mm x 20mm
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	35A
Operating Temperature Range	-55°C ~ 125°C

Substitute Part Grouping Explanation

Substitution eligibility for the 5ST 160 is determined by strict equivalence across the following critical parameters:

Current Rating: 160 mA (exact match required)
Voltage Rating (AC): 250 V (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Response Time: Slow Blow (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Mounting Type: Requires Holder (exact match required)
Breaking Capacity @ Rated Voltage: 35A (exact match required)

All substitute parts listed below meet these criteria. Secondary parameters such as melting I²t, DC cold resistance, and approval agencies may vary within acceptable engineering tolerances for this product category but do not affect functional substitutability.

Parameter Comparison

Part Number	Manufacturer	Current Rating	Voltage (AC)	Response Time	Package	Breaking Capacity	Melting I²t	DC Cold Resistance (Ω)	Product Status	RoHS Status
5ST 160	Bel Fuse Inc.	160 mA	250 V	Slow Blow	5mm x 20mm	35A	0.08	4.4	Obsolete	RoHS Non-Compliant
5ST 160-R	Bel Fuse Inc.	160 mA	250 V	Slow Blow	5mm x 20mm	35A	0.08	4.4	Active	RoHS3 Compliant
0034.3109	SCHURTER Inc.	160 mA	250 V	Slow Blow	5mm x 20mm	35A	0.23	—	Active	RoHS3 Compliant
0218.160MXP	Littelfuse Inc.	160 mA	250 V	Slow Blow	5mm x 20mm	35A	0.219	2.55	Active	RoHS3 Compliant
0218.160TXP	Littelfuse Inc.	160 mA	250 V	Slow Blow	5mm x 20mm	35A	0.144	3.7	Active	RoHS3 Compliant
0218.160VXP	Littelfuse Inc.	160 mA	250 V	Slow Blow	5mm x 20mm	35A	0.144	3.7	Active	RoHS3 Compliant
0218.160HXP	Littelfuse Inc.	160 mA	250 V	Slow Blow	5mm x 20mm	35A	0.219	2.55	Active	RoHS3 Compliant
GDC-160MA	Eaton - Electronics Division	160 mA	250 V	Slow Blow	5mm x 20mm	35A	0.093	1.27	Active	RoHS3 Compliant

Engineering Selection Recommendations

For applications currently using the obsolete 5ST 160, the following selection criteria apply:

Direct Replacement (Highest Compatibility): The 5ST 160-R from Bel Fuse Inc. is the primary substitute, offering identical electrical and mechanical specifications with active product status and RoHS3 compliance. This part maintains the same melting I²t and DC cold resistance characteristics as the original.

Active Manufacturer Alternatives: Littelfuse 0218.160MXP and 0218.160HXP provide functionally equivalent substitution with broader international approval certifications (CCC, CE, CSA, K-MARK, SEMKO, UL, VDE). These parts are suitable for new designs and high-volume applications.

Alternative Sourcing: SCHURTER 0034.3109 and Eaton GDC-160MA are functionally equivalent alternatives with active status and RoHS3 compliance. Selection between these options depends on supply chain requirements and regional certification needs.

All listed substitutes maintain the required 35A breaking capacity, 5mm x 20mm physical form factor, and slow-blow response characteristic. Melting I²t and DC cold resistance variations are within acceptable engineering tolerances for this fuse category and do not affect circuit protection performance when applied within rated electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can I directly replace a 5ST 160 with any of the listed substitute parts?

A: Yes. All listed parts meet the critical substitution parameters: 160 mA current rating, 250 V AC voltage rating, slow-blow response, 5mm x 20mm package, and 35A breaking capacity. Physical and electrical compatibility is confirmed.

Q: What is the difference between the Littelfuse 0218.160MXP and 0218.160TXP?

A: Both parts are functionally equivalent for circuit protection. The primary difference is melting I²t (0.219 vs. 0.144) and DC cold resistance (2.55 Ω vs. 3.7 Ω). These variations reflect different internal construction but do not affect substitutability when applied within rated electrical parameters.

Q: Is the 5ST 160-R a direct equivalent to the original 5ST 160?

A: Yes. The 5ST 160-R maintains identical electrical specifications (current, voltage, breaking capacity, melting I²t, DC cold resistance) and physical dimensions. The primary difference is product status (active vs. obsolete) and RoHS compliance (RoHS3 vs. non-compliant).

Q: Do all substitute parts require the same holder as the original 5ST 160?

A: Yes. All substitute parts are cartridge-type fuses in 5mm x 20mm form factor and require a compatible fuse holder. Mechanical compatibility is confirmed across all listed parts.

Q: Which substitute part has the broadest international certification coverage?

A: Littelfuse parts 0218.160MXP and 0218.160HXP carry the most comprehensive approval agency certifications: CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE. These certifications support global market applications.

Q: Are there any compliance differences between the original 5ST 160 and the substitutes?

A: Yes. The original 5ST 160 is RoHS non-compliant. All active substitute parts listed are RoHS3 compliant. For applications subject to RoHS regulations, any of the listed substitutes is appropriate. For legacy systems without RoHS requirements, all parts remain functionally equivalent.

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