Littelfuse 023002.5HXSW Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 023002.5HXSW is a 2.5 A 250 V AC DC glass cartridge fuse with slow-blow response characteristics, designed for through-hole mounting in non-standard axial configuration. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and field replacement applications.

Key Parameters

Parameter	Value
Current Rating	2.5 A
Voltage Rating - AC	250 V
Voltage Rating - DC	Not specified
Response Time	Slow Blow
Fuse Type	Cartridge, Glass
Package / Case	Cartridge, Non-Standard (Axial)
Size / Dimension	0.177" Dia x 0.571" L (4.50mm x 14.50mm)
Mounting Type	Through Hole
Operating Temperature	-55°C ~ 125°C
Melting I²t	50
DC Cold Resistance	0.0498 Ohms
Breaking Capacity @ Rated Voltage	100A
Series	230
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 023002.5HXSW is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

Current Rating: 2.5 A
Voltage Rating - AC: 250 V
Response Time: Slow Blow
Fuse Type: Cartridge, Glass
Package / Case: Cartridge, Non-Standard (Axial)
Size / Dimension: 0.177" Dia x 0.571" L (4.50mm x 14.50mm)
Mounting Type: Through Hole
Operating Temperature Range: -55°C ~ 125°C
Melting I²t: 50
Series: 230

All identified substitute parts maintain these core electrical and mechanical parameters. Variations in breaking capacity, DC voltage rating, RoHS compliance status, and approval agencies are noted but do not preclude substitution where AC 250 V operation is the primary design requirement.

Parameter Comparison

Part Number	Current Rating (A)	Voltage AC (V)	Voltage DC (V)	Response Time	Breaking Capacity	DC Cold Resistance (Ohms)	Product Status	RoHS Status	Inventory (Pcs)
023002.5HXSW	2.5	250	Not specified	Slow Blow	100A	0.0498	Obsolete	RoHS non-compliant	949
023002.5HXSP	2.5	250	125	Slow Blow	35A AC, 10kA DC	0.0502	Active	ROHS3 Compliant	746
023002.5HXP	2.5	250	125	Slow Blow	35A AC, 10kA DC	0.0502	Active	ROHS3 Compliant	1166
023002.5MXF16P	2.5	250	125	Slow Blow	100A AC, 10kA DC	0.0502	Active	ROHS3 Compliant	1066
023002.5MXP	2.5	250	125	Slow Blow	35A AC, 10kA DC	0.0502	Active	ROHS3 Compliant	2100
023002.5MXSP	2.5	250	125	Slow Blow	35A AC, 10kA DC	0.0502	Active	ROHS3 Compliant	773
023002.5VXP	2.5	250	125	Slow Blow	100A AC, 10kA DC	0.0502	Active	ROHS3 Compliant	852

Engineering Selection Recommendations

All substitute parts listed maintain electrical and mechanical compatibility with the 023002.5HXSW across AC 250 V operation. Selection among active alternatives should prioritize:

Product Status: All substitute parts carry Active status, ensuring continued availability and manufacturing support, in contrast to the obsolete 023002.5HXSW.

Compliance Requirements: Substitute parts 023002.5HXSP, 023002.5HXP, 023002.5MXF16P, 023002.5MXP, 023002.5MXSP, and 023002.5VXP are ROHS3 compliant, meeting current regulatory requirements. The original part is RoHS non-compliant.

Approval Agencies: Substitute parts carry CE, CSA, PSE, and UL certifications. The original part carries CSA, METI, and UL certifications. Substitute parts provide expanded regulatory coverage.

Breaking Capacity Variants: Parts 023002.5MXF16P and 023002.5VXP provide 100A AC breaking capacity, matching the original specification. Parts 023002.5HXSP, 023002.5HXP, 023002.5MXP, and 023002.5MXSP provide 35A AC breaking capacity with enhanced 10kA DC capability.

DC Voltage Rating: All substitute parts specify 125 V DC rating, providing additional operational flexibility for dual-voltage applications.

Frequently Asked Questions (FAQ)

Q: Can 023002.5HXSP, 023002.5HXP, 023002.5MXP, or 023002.5MXSP be used as direct replacements for 023002.5HXSW?

A: Yes. These parts maintain identical current rating (2.5 A), AC voltage rating (250 V), response time (slow blow), fuse type (cartridge glass), package configuration (non-standard axial), physical dimensions (0.177" Dia x 0.571" L), and operating temperature range (-55°C ~ 125°C). The 35A AC breaking capacity is lower than the original 100A specification but remains within acceptable substitution parameters for AC 250 V circuits.

Q: What is the difference between 023002.5MXF16P and 023002.5MXP?

A: Both parts are electrically equivalent at 2.5 A 250 V AC with slow-blow response. The primary distinction is breaking capacity: 023002.5MXF16P provides 100A AC breaking capacity, matching the original part, while 023002.5MXP provides 35A AC breaking capacity. Selection depends on circuit protection requirements.

Q: Are the substitute parts physically interchangeable with the original 023002.5HXSW?

A: Yes. All substitute parts share identical physical dimensions (0.177" Dia x 0.571" L / 4.50mm x 14.50mm), package type (cartridge non-standard axial), and through-hole mounting configuration, ensuring mechanical compatibility in existing designs.

Q: Does the addition of 125 V DC rating on substitute parts affect AC-only applications?

A: No. The 125 V DC rating on substitute parts represents expanded operational capability and does not impact AC 250 V performance. These parts are fully compatible with designs requiring AC 250 V operation only.

Q: Which substitute part offers the best inventory availability?

A: Part 023002.5MXP provides the highest inventory level at 2100 pieces, followed by 023002.5HXP at 1166 pieces. Both are active products with ROHS3 compliance and full regulatory certifications.

Q: How does RoHS3 compliance on substitute parts differ from the non-compliant original?

A: RoHS3 compliance on substitute parts indicates conformance to current hazardous substance restrictions in electrical and electronic equipment. This compliance status is required for new designs and ongoing production in regulated markets. The original part's non-compliant status reflects its obsolete classification.

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