Littelfuse 02173.15H Glass Cartridge Fuse 3.15A 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 02173.15H is a 3.15 A, 250 V AC/DC fast-blow glass cartridge fuse in 5mm x 20mm form factor, designed for applications requiring overcurrent protection in industrial and commercial equipment. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for direct replacement in existing designs and new production applications.

Key Parameters

Parameter	Value
Current Rating	3.15 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Fast Blow
Package / Case	5mm x 20mm
Breaking Capacity @ Rated Voltage	35 A
Mounting Type	Requires Holder
Operating Temperature Range	-55°C to 125°C

Substitute Part Grouping Explanation

Substitution of the 02173.15H is determined by strict equivalence across the following critical parameters: current rating (3.15 A), voltage rating (250 V AC), fuse type (cartridge glass), response time (fast blow), physical dimensions (5mm x 20mm), breaking capacity (35 A), and operating temperature range (-55°C to 125°C). All substitute parts listed maintain these specifications without deviation. Substitutes are grouped by manufacturer and product status: Littelfuse Series 217 and 617 active equivalents, Eaton GDB and S500 series alternatives, and Bel Fuse 5SF series options. Packaging variations (bulk vs. tape) do not affect electrical or mechanical compatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Current Rating (A)	Voltage (V AC)	Response Time	Package / Case	Breaking Capacity (A)	Melting I²t	DC Cold Resistance (Ω)	Product Status	RoHS Status
02173.15H	Littelfuse Inc.	217	3.15	250	Fast Blow	5mm x 20mm	35	17.722	0.022	Obsolete	RoHS Non-Compliant
02173.15HXP	Littelfuse Inc.	217	3.15	250	Fast Blow	5mm x 20mm	35	17.72	0.0224	Active	RoHS3 Compliant
02173.15MXBP	Littelfuse	217	3.15	250	Fast Blow	5mm x 20mm	35	17.72	0.0224	Active	RoHS3 Compliant
02173.15MXP	Littelfuse Inc.	217	3.15	250	Fast Blow	5mm x 20mm	35	17.72	0.0224	Active	RoHS3 Compliant
02173.15TXP	Littelfuse Inc.	217	3.15	250	Fast Blow	5mm x 20mm	35	17.72	0.0224	Active	RoHS3 Compliant
02173.15VXP	Littelfuse Inc.	217	3.15	250	Fast Blow	5mm x 20mm	35	17.72	0.0224	Active	RoHS3 Compliant
06173.15MXP	Littelfuse Inc.	617	3.15	250	Fast Blow	5mm x 20mm	35	17.71	0.0224	Active	RoHS3 Compliant
BK/GDB-3.15A	Eaton - Electronics Division	GDB	3.15	250	Fast Blow	5mm x 20mm	35	13	0.025	Active	RoHS3 Compliant
5SF 3.15-R	Bel Fuse Inc.	5SF	3.15	250	Fast Blow	5mm x 20mm	35	16	0.022	Active	RoHS3 Compliant
BK/S500-3.15-R	Eaton - Electronics Division	S500	3.15	250	Fast Blow	5mm x 20mm	35	13	0.025	Active	RoHS3 Compliant
BK1/S500-3.15-R	Eaton - Electronics Division	S500	3.15	250	Fast Blow	5mm x 20mm	35	13	0.025	Active	RoHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain electrical and mechanical compatibility with the 02173.15H across current rating, voltage, response time, and physical dimensions. The primary distinction between substitutes is product status and regulatory compliance.

Littelfuse Series 217 variants (02173.15HXP, 02173.15MXBP, 02173.15MXP, 02173.15TXP, 02173.15VXP) and Series 617 variant (06173.15MXP) are direct parametric equivalents with active product status and RoHS3 compliance. These parts are recommended for new designs and production applications requiring modern regulatory alignment.

Eaton GDB and S500 series (BK/GDB-3.15A, BK/S500-3.15-R, BK1/S500-3.15-R) provide alternative sourcing with active status and RoHS3 compliance. Bel Fuse 5SF 3.15-R offers additional sourcing diversity with active status and RoHS3 compliance.

All substitute parts carry identical approval agency certifications or equivalent standards coverage (BSI, CE, CCC, CSA, VDE, UL, IMQ, SEMKO, cURus). Selection between substitutes should be based on supply chain availability, inventory levels, and procurement preferences rather than electrical performance, as all maintain specification equivalence.

Frequently Asked Questions (FAQ)

Q: Can 02173.15HXP directly replace 02173.15H in existing applications?

A: Yes. The 02173.15HXP maintains identical electrical specifications (3.15 A, 250 V AC, fast-blow response) and physical dimensions (5mm x 20mm). The primary difference is product status (active vs. obsolete) and RoHS3 compliance. No circuit modifications are required.

Q: What is the difference between Littelfuse Series 217 and Series 617 variants?

A: Both series maintain identical electrical and mechanical parameters for the 3.15 A, 250 V specification. Series designation reflects internal manufacturing or design revision. Melting I²t values are equivalent (17.72 vs. 17.71). Selection between series is based on availability and procurement preference.

Q: Are Eaton and Bel Fuse alternatives electrically equivalent?

A: Yes. Eaton GDB, S500, and Bel Fuse 5SF series all maintain the specified 3.15 A, 250 V, fast-blow characteristics and 5mm x 20mm form factor. Melting I²t values differ slightly (13 for Eaton, 16 for Bel Fuse, 17.72 for Littelfuse), but all fall within acceptable tolerance for this current rating and are approved to the same standards.

Q: Does packaging type (bulk vs. tape) affect compatibility?

A: No. Packaging variations indicate distribution format only and do not affect electrical or mechanical performance. Bulk and tape-packaged parts are functionally identical and interchangeable in applications.

Q: Which substitute offers the best RoHS compliance?

A: All active substitute parts listed are RoHS3 compliant. The original 02173.15H is RoHS non-compliant. Any active substitute provides improved regulatory alignment for new production.

Q: Can I mix different manufacturers in the same application?

A: Yes. All listed substitutes meet identical electrical specifications, breaking capacity, and approval standards. Mixed sourcing across Littelfuse, Eaton, and Bel Fuse is acceptable from an engineering standpoint, though single-source procurement is typically preferred for supply chain consistency.

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