Littelfuse 0225005.H Glass Cartridge Fuse 5A 125VAC 2AG Equivalent & Substitute Parts

Part Overview

The Littelfuse 0225005.H is a 5A 125VAC fast-blow glass cartridge fuse in 2AG package format (5mm x 15mm). This component is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing procurement and system maintenance. The part requires a dedicated fuse holder for installation and operates across a temperature range of -55°C to 125°C.

Key Parameters

Parameter	Value
Current Rating	5 A
Voltage Rating (AC)	125 V
Fuse Type	Cartridge, Glass
Package / Case	2AG, 5mm x 15mm
Response Time	Fast Blow
Mounting Type	Requires Holder
Operating Temperature Range	-55°C ~ 125°C
Melting I²t	17

Substitute Part Grouping Explanation

Substitution eligibility for the 0225005.H is determined by strict equivalence across the following critical parameters:

Current Rating: 5 A (exact match required)
Voltage Rating (AC): 125 V (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Package / Case: 2AG, 5mm x 15mm (exact match required)
Response Time: Fast Blow (exact match required)
Melting I²t: 17 (exact match required)

Both identified substitute parts—0225005.HXUP and 0225005.MXUP—meet all critical electrical and mechanical parameters. The primary distinction between these alternatives and the main part is product status: both substitutes are active components, whereas the main part is obsolete.

Parameter Comparison

Parameter	0225005.H (Main)	0225005.HXUP (Substitute)	0225005.MXUP (Substitute)
Manufacturer	Littelfuse Inc.	Littelfuse	Littelfuse Inc.
Current Rating (Amps)	5 A	5 A	5 A
Voltage Rating - AC	125 V	125 V	125 V
Fuse Type	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass
Package / Case	2AG, 5mm x 15mm	2AG, 5mm x 15mm	2AG, 5mm x 15mm
Response Time	Fast Blow	Fast Blow	Fast Blow
Mounting Type	Requires Holder	Requires Holder	Requires Holder
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Melting I²t	17	17	17
DC Cold Resistance	0.0179 Ohms	0.0186 Ohms	0.0186 Ohms
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Approval Agency	CSA, METI, UL	CE, CSA, UL	CE, CSA, UL

Engineering Selection Recommendations

Both 0225005.HXUP and 0225005.MXUP are direct functional equivalents to the obsolete 0225005.H. Selection between these two active alternatives should be based on the following factors:

0225005.HXUP is supplied in bulk packaging and carries CSA, CE, and UL certifications with ROHS3 compliance.

0225005.MXUP is supplied in bulk packaging and carries identical certifications (CSA, CE, UL) with ROHS3 compliance. This part maintains REACH Unaffected status and has higher current inventory availability (1677 pcs vs. 797 pcs).

Both parts exhibit identical electrical performance and mechanical compatibility. The choice between them depends on procurement requirements, inventory availability, and supply chain considerations rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can 0225005.HXUP or 0225005.MXUP be used as direct replacements for 0225005.H?

A: Yes. Both substitute parts are electrically and mechanically equivalent. They share identical current ratings (5A), voltage ratings (125VAC), fuse type (cartridge glass), package format (2AG, 5mm x 15mm), response time (fast blow), and melting I²t values (17). All three parts require the same fuse holder for installation.

Q: What is the difference between the two substitute parts?

A: 0225005.HXUP and 0225005.MXUP are parametrically identical. Both are active products with ROHS3 compliance and equivalent certifications. The primary difference is inventory availability, with 0225005.MXUP having higher stock levels.

Q: Why is the main part (0225005.H) marked as obsolete?

A: The 0225005.H is classified as obsolete, meaning it is no longer in active production. The active equivalents 0225005.HXUP and 0225005.MXUP should be used for new designs and ongoing procurement.

Q: Are there any compliance differences between the main part and the substitutes?

A: Yes. The main part (0225005.H) is RoHS non-compliant, while both substitutes (0225005.HXUP and 0225005.MXUP) are ROHS3 compliant. The substitutes also carry CE certification in addition to CSA and UL certifications held by the main part.

Q: Will the substitutes fit in existing fuse holders designed for 0225005.H?

A: Yes. All three parts use the identical 2AG package format (5mm x 15mm) and require the same holder type. Physical and electrical compatibility is maintained.

Q: What is the significance of the DC Cold Resistance difference?

A: The main part has a DC cold resistance of 0.0179 Ohms, while both substitutes measure 0.0186 Ohms. This minor variation (approximately 3.9% difference) falls within normal manufacturing tolerances for glass cartridge fuses and does not affect functional performance or circuit protection characteristics.

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