Littelfuse 0232001.MXF34P Glass Cartridge Fuse 1A 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0232001.MXF34P is a 1 A 250 V AC/DC glass cartridge fuse with a 5mm x 20mm form factor, designed for applications requiring medium-blow response characteristics. This component is an active product with full compliance to CE, KC, and PSE standards. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and functional characteristics align with the original specification, enabling direct replacement in circuit protection applications.

Substiute Parts

0232001.MXF34P

Littelfuse Inc.In Stock: 8730232001.MXF34P Datasheet

Current PartRFQ

0232001.MXP

Littelfuse Inc.In Stock: 12330232001.MXP Datasheet

Parametric EquivalentRFQ

0234001.MXP

Littelfuse Inc.In Stock: 18700234001.MXP Datasheet

Parametric EquivalentRFQ

MSC-1A

OptiFuseIn Stock: 1961MSC-1A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0232001.MXF34P are qualified based on the following critical parameters:

• Current Rating: 1 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Medium Blow (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

All identified substitutes meet these core electrical and mechanical criteria. Variations in secondary parameters such as melting I²t, DC cold resistance, and approval agencies do not preclude substitution when primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

All four parts listed—0232001.MXF34P, 0232001.MXP, 0234001.MXP, and MSC-1A—are active products with ROHS3 compliance and meet the core electrical and mechanical requirements for direct substitution.

Littelfuse 0232001.MXP is a direct parametric equivalent to the main part, sharing identical current rating, voltage rating, package dimensions, response time, and DC cold resistance. Both parts carry CE, KC, and PSE certifications.

Littelfuse 0234001.MXP maintains all critical electrical and mechanical parameters but differs in melting I²t (1.975 versus 1.373) and DC cold resistance (0.175 Ohms versus 0.0923 Ohms). This part carries expanded approval agency certifications including CSA, K-MARK, and UL in addition to CE and PSE.

OptiFuse MSC-1A meets all core substitution criteria with identical current, voltage, package, and response time specifications. The melting I²t value is 2.112, and approval certifications include cULus and UL 248.

Selection among these substitutes depends on availability, approval agency requirements for the end application, and any specific thermal or resistance characteristics required by the circuit design.

Frequently Asked Questions (FAQ)

Q: Can 0232001.MXP be used as a direct replacement for 0232001.MXF34P?

A: Yes. Both parts share identical electrical ratings (1 A, 250 V AC), fuse type (cartridge, glass), package dimensions (5mm x 20mm), response time (medium blow), and DC cold resistance (0.0923 Ohms). Both are Littelfuse Series 232 products with CE, KC, and PSE certifications.

Q: What is the difference between 0234001.MXP and 0232001.MXF34P?

A: The parts are electrically equivalent in current rating, voltage, and package dimensions. The 0234001.MXP has a higher melting I²t value (1.975 versus 1.373) and higher DC cold resistance (0.175 Ohms versus 0.0923 Ohms). The 0234001.MXP is Littelfuse Series 234 and carries additional certifications (CSA, K-MARK, UL).

Q: Is MSC-1A from OptiFuse compatible with the Littelfuse 0232001.MXF34P?

A: Yes. MSC-1A meets all critical substitution parameters: 1 A current rating, 250 V AC voltage rating, 5mm x 20mm package, cartridge glass fuse type, and medium-blow response. MSC-1A carries cULus and UL 248 certifications.

Q: Do all substitute parts require the same holder?

A: Yes. All parts share the identical 5mm x 20mm package dimensions and require a compatible 5x20mm fuse holder. Mechanical compatibility is assured across all listed substitutes.

Q: What factors should determine which substitute to select?

A: Selection should be based on application-specific approval agency requirements, component availability, and any circuit-specific thermal or resistance characteristics. All listed parts are active products with full RoHS3 compliance.