Littelfuse 022904.6VXP Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 022904.6VXP is a 4.6 A slow-blow glass cartridge fuse rated for 250 V AC and 125 V DC operation. This fuse is designed for applications requiring overcurrent protection in circuits with inductive loads or startup transients. The part is active in production and widely stocked, with 629 units currently available. Equivalent substitute parts are necessary when primary inventory is depleted or when alternative packaging or sourcing from different distribution channels is required.

Key Parameters

Parameter	Value
Manufacturer Part Number	022904.6VXP
Manufacturer	Littelfuse Inc.
Current Rating	4.6 A
Voltage Rating (AC)	250 V
Voltage Rating (DC)	125 V
Fuse Type	Cartridge, Glass
Response Time	Slow Blow
Package / Case	2AG, 5mm x 15mm
Breaking Capacity (AC)	100 A
Breaking Capacity (DC)	10 kA
Melting I²t	110
Operating Temperature Range	-55°C to 125°C
DC Cold Resistance	0.0312 Ohms
Approval Agencies	CE, CSA, PSE, UL
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

All substitute parts for the 022904.6VXP are parametric equivalents manufactured by Littelfuse Inc. within the 229 series. Substitution is valid based on the following criteria:

Current Rating: 4.6 A (identical across all parts)
Voltage Rating: 250 V AC / 125 V DC (identical across all parts)
Fuse Type: Cartridge, Glass (identical across all parts)
Response Time: Slow Blow (identical across all parts)
Package / Case: 2AG, 5mm x 15mm (identical across all parts)
Breaking Capacity: 100 A AC / 10 kA DC (identical across all parts)
Melting I²t: 110 (identical across all parts)
Operating Temperature Range: -55°C to 125°C (identical across all parts)
DC Cold Resistance: 0.0312 Ohms (identical across all parts)
Approval Agencies: CE, CSA, PSE, UL (identical across all parts)
RoHS Status: ROHS3 Compliant (identical across all parts)

The substitute parts differ only in their specific part number designations (022904.6HXP, 022904.6HXSP, 022904.6MXP), which represent different packaging or distribution variants within the same electrical and mechanical specification.

Parameter Comparison

Parameter	022904.6VXP	022904.6HXP	022904.6HXSP	022904.6MXP
Current Rating (A)	4.6	4.6	4.6	4.6
Voltage Rating AC (V)	250	250	250	250
Voltage Rating DC (V)	125	125	125	125
Fuse Type	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass
Response Time	Slow Blow	Slow Blow	Slow Blow	Slow Blow
Package / Case	2AG, 5mm x 15mm	2AG, 5mm x 15mm	2AG, 5mm x 15mm	2AG, 5mm x 15mm
Breaking Capacity AC (A)	100	100	100	100
Breaking Capacity DC (kA)	10	10	10	10
Melting I²t	110	110	110	110
Operating Temperature Range	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C
DC Cold Resistance (Ohms)	0.0312	0.0312	0.0312	0.0312
Approval Agencies	CE, CSA, PSE, UL	CE, CSA, PSE, UL	CE, CSA, PSE, UL	CE, CSA, PSE, UL
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active
Inventory (Pcs)	629	1567	837	1604

Engineering Selection Recommendations

All substitute parts (022904.6HXP, 022904.6HXSP, 022904.6MXP) are direct parametric equivalents to the 022904.6VXP and are suitable for interchangeable use in applications requiring a 4.6 A slow-blow glass cartridge fuse with 250 V AC / 125 V DC ratings. Selection among these parts should be based on:

Inventory availability at the time of procurement
Distribution channel preference or supply chain requirements
Packaging or reel configuration needs for manufacturing processes

All parts maintain identical electrical performance, mechanical dimensions, and regulatory compliance certifications (CE, CSA, PSE, UL). All parts are ROHS3 compliant and active in production status.

Frequently Asked Questions (FAQ)

Q: Can 022904.6HXP, 022904.6HXSP, and 022904.6MXP be used interchangeably with 022904.6VXP?

A: Yes. All four parts are parametric equivalents with identical electrical ratings (4.6 A, 250 V AC, 125 V DC), fuse type (slow-blow glass cartridge), mechanical dimensions (2AG, 5mm x 15mm), breaking capacity, and regulatory approvals. They are direct substitutes.

Q: What determines whether a fuse can substitute for the 022904.6VXP?

A: Substitution is valid when the replacement part maintains identical current rating, voltage ratings (both AC and DC), response time (slow blow), package dimensions, breaking capacity, and regulatory certifications. All listed substitute parts meet these criteria.

Q: Are there any differences in performance between these substitute parts?

A: No. All parts have identical DC cold resistance (0.0312 Ohms), melting I²t (110), operating temperature range (-55°C to 125°C), and approval agencies. Performance is equivalent across all four part numbers.

Q: What is the 2AG package specification?

A: The 2AG package refers to a standardized glass cartridge fuse format with dimensions of 5mm diameter by 15mm length (0.177" Dia x 0.570" L). This fuse requires a compatible holder for installation.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four parts (022904.6VXP, 022904.6HXP, 022904.6HXSP, 022904.6MXP) are ROHS3 compliant and carry identical regulatory certifications (CE, CSA, PSE, UL).

Q: Which substitute part has the highest inventory availability?

A: The 022904.6MXP has the highest inventory with 1604 units in stock, followed by 022904.6HXP with 1567 units.

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