Littelfuse 0232002.MXF5P Glass Cartridge Fuse 2A 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0232002.MXF5P is a 2A 250VAC glass cartridge fuse with a 5mm x 20mm form factor, designed for AC/DC applications requiring medium-blow response characteristics. This Active product is widely used in industrial and commercial equipment where reliable overcurrent protection is essential. Substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining identical electrical and mechanical performance specifications.

Key Parameters

Parameter	Value
Current Rating	2 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Package / Case	5mm x 20mm
Response Time	Medium Blow
Breaking Capacity @ Rated Voltage	100A
Operating Temperature Range	-55°C ~ 125°C
Mounting Type	Requires Holder
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 0232002.MXF5P are qualified based on the following critical parameters that must remain constant:

Current Rating: 2 A (exact match required)
Voltage Rating (AC): 250 V (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Response Time: Medium Blow (exact match required)
Breaking Capacity @ Rated Voltage: 100A (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)
Mounting Type: Requires Holder (exact match required)

All substitute parts listed below meet these mandatory electrical and mechanical parameters. Variations in secondary characteristics such as melting I²t, DC cold resistance, and approval agency certifications do not affect functional interchangeability within the specified application envelope.

Parameter Comparison

Parameter	0232002.MXF5P (Main)	0232002.MXP	0234002.MXBP	0234002.MXP	MSC-2A
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	OptiFuse
Current Rating (Amps)	2 A	2 A	2 A	2 A	2 A
Voltage Rating - AC	250 V	250 V	250 V	250 V	250 V
Fuse Type	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass
Package / Case	5mm x 20mm	5mm x 20mm	5mm x 20mm	5mm x 20mm	5mm x 20mm
Response Time	Medium Blow	Medium Blow	Medium Blow	Medium Blow	Medium Blow
Breaking Capacity @ Rated Voltage	100A	100A	100A	100A	100A
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Mounting Type	Requires Holder	Requires Holder	Requires Holder	Requires Holder	Requires Holder
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active
Melting I²t	8.25	8.25	9.97	9.97	4.888
DC Cold Resistance (Ohms)	0.037	0.037	0.0684	0.0684	Not specified
Approval Agency	CE, KC, PSE	CE, KC, PSE	CE, CSA, K-MARK, PSE, UL	CE, CSA, K-MARK, PSE, UL	cULus, UL 248
Inventory (Pcs)	787	1967	1749	2351	3495

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and full compliance with RoHS3 and REACH requirements. Selection among equivalent parts should be based on:

Littelfuse Series 232 (0232002.MXF5P, 0232002.MXP): These parts share identical electrical characteristics including melting I²t (8.25) and DC cold resistance (0.037 Ohms). Approval agencies include CE, KC, and PSE. The 0232002.MXP variant offers higher inventory availability (1967 pcs vs. 787 pcs).

Littelfuse Series 234 (0234002.MXBP, 0234002.MXP): These parts feature higher melting I²t (9.97) and increased DC cold resistance (0.0684 Ohms) compared to Series 232. Approval certifications expand to include CSA, K-MARK, and UL. The 0234002.MXP variant provides the highest inventory level (2351 pcs) among Littelfuse options.

OptiFuse MSC-2A: This alternative manufacturer part carries cULus and UL 248 certifications. The melting I²t (4.888) is lower than both Littelfuse series. This part offers the largest inventory stock (3495 pcs).

All parts are suitable for direct substitution in applications where the specified electrical and mechanical parameters are the controlling design criteria.

Frequently Asked Questions (FAQ)

Q: Can I substitute 0232002.MXF5P with 0234002.MXP?

A: Yes. Both parts meet the mandatory substitution criteria: 2A current rating, 250V AC voltage rating, glass cartridge fuse type, 5mm x 20mm package, medium-blow response, 100A breaking capacity, and -55°C to 125°C operating temperature. The Series 234 variant offers expanded UL and CSA certifications and higher inventory availability.

Q: What is the difference between Littelfuse Series 232 and Series 234?

A: Series 232 (0232002.MXF5P, 0232002.MXP) and Series 234 (0234002.MXBP, 0234002.MXP) differ in melting I²t (8.25 vs. 9.97) and DC cold resistance (0.037 Ohms vs. 0.0684 Ohms). Series 234 includes additional approval certifications (CSA, K-MARK, UL). Both series are electrically and mechanically interchangeable for the specified application parameters.

Q: Can I use OptiFuse MSC-2A as a substitute?

A: Yes. The MSC-2A meets all mandatory electrical and mechanical parameters. It carries cULus and UL 248 certifications and offers the highest inventory availability. The lower melting I²t (4.888) does not affect interchangeability within the specified application envelope.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: What does "Requires Holder" mean for mounting type?

A: All listed parts are cartridge fuses that require a separate fuse holder for installation. They are not panel-mount or surface-mount components and must be installed in a compatible 5mm x 20mm fuse holder.

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

A: Yes. All substitute parts meet identical electrical and mechanical specifications. However, verify that your fuse holder is compatible with the specific part dimensions and that any application-specific certifications (CE, UL, CSA, PSE, K-MARK) align with your equipment requirements.

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