Littelfuse 02302.25VXP Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 02302.25VXP is a 2.25 A, 250 V AC / 125 V DC glass cartridge fuse with slow-blow response characteristics. This through-hole mounted component is designed for circuit protection in applications requiring non-standard axial cartridge form factors. The part maintains active product status with full compliance to CE, CSA, PSE, and UL approval agencies. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same series and packaging specifications.

Substiute Parts

02302.25VXP

Littelfuse Inc.In Stock: 88902302.25VXP Datasheet

Current PartRFQ

02302.25HXP

Littelfuse Inc.In Stock: 103202302.25HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 02302.25VXP are identified based on strict equivalence across the following critical parameters:

• Current Rating: 2.25 A
• Voltage Rating: 250 V AC / 125 V DC
• Response Time: Slow Blow
• Fuse Type: Cartridge, Glass
• Mounting Type: Through Hole
• Package / Case: Cartridge, Non-Standard (Axial)
• Physical Dimensions: 0.177" Dia x 0.571" L (4.50mm x 14.50mm)
• Series: 230
• Operating Temperature Range: -55°C ~ 125°C
• DC Cold Resistance: 0.0567 Ohms
• Melting I²t: 39

The substitute part 02302.25HXP maintains all electrical and mechanical parameters identical to the main part. Both components are manufactured by Littelfuse Inc., belong to the same 230 series, and carry equivalent regulatory approvals (CE, CSA, PSE, UL). The only variance is in breaking capacity at rated voltage, which does not affect substitution eligibility for standard circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 02302.25VXP and 02302.25HXP are active products with identical electrical specifications and regulatory certifications. Selection between these parts should be based on application-specific breaking capacity requirements. The 02302.25VXP provides 100 A AC breaking capacity, while the 02302.25HXP provides 35 A AC breaking capacity. Both maintain 10 kA DC breaking capacity. Component selection should align with the maximum prospective short-circuit current in the target application. Both parts carry ROHS3 compliance and are unaffected by REACH regulations, making them suitable for applications requiring environmental compliance.

Frequently Asked Questions (FAQ)

Q: Can 02302.25HXP be used as a direct replacement for 02302.25VXP?

A: Yes, for applications where the prospective short-circuit current does not exceed 35 A AC. Both parts share identical current ratings, voltage ratings, response time, physical dimensions, and operating temperature ranges. The primary difference is breaking capacity at rated voltage.

Q: What is the significance of breaking capacity in fuse selection?

A: Breaking capacity defines the maximum prospective short-circuit current the fuse can safely interrupt without rupturing or creating a hazard. The 02302.25VXP supports 100 A AC, while the 02302.25HXP supports 35 A AC. Selection must ensure the fuse breaking capacity exceeds the maximum prospective short-circuit current in the circuit.

Q: Are both parts compatible with the same PCB footprint and through-hole mounting?

A: Yes. Both parts are non-standard axial cartridge fuses with identical physical dimensions of 0.177" diameter by 0.571" length (4.50mm x 14.50mm). They are both through-hole mounted components and are mechanically interchangeable.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both 02302.25VXP and 02302.25HXP carry CE, CSA, PSE, and UL approvals. Both are ROHS3 compliant and REACH unaffected.

Q: What is the melting I²t value and why is it important?

A: The melting I²t value of 39 indicates the thermal energy required to melt the fuse element. This parameter is identical for both parts and determines the fuse's response to overcurrent conditions. It ensures consistent slow-blow protection characteristics across both substitute options.