Littelfuse 0230.250HXSW Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0230.250HXSW is a 250 mA, 250 V AC glass cartridge fuse with slow-blow response characteristics, designed for through-hole mounting in axial configuration. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing system support and new designs.

Substiute Parts

0230.250HXSW

Littelfuse Inc.In Stock: 11430230.250HXSW Datasheet

Current PartRFQ

0230.250HXSP

Littelfuse Inc.In Stock: 12300230.250HXSP Datasheet

DirectRFQ

0230.250HXP

Littelfuse Inc.In Stock: 10240230.250HXP Datasheet

Parametric EquivalentRFQ

0230.250MXP

Littelfuse Inc.In Stock: 24260230.250MXP Datasheet

Parametric EquivalentRFQ

0230.250VXP

Littelfuse Inc.In Stock: 8580230.250VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0230.250HXSW is determined by strict equivalence across the following electrical and mechanical parameters:

• Current Rating: 250 mA (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Cartridge, Non-Standard (Axial) (exact match required)
• Size / Dimension: 0.177" Dia x 0.571" L (4.50mm x 14.50mm) (exact match required)
• Melting I²t: 0.216 (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

All substitute parts listed below meet these criteria. Additional DC voltage ratings and enhanced breaking capacity specifications in substitute parts do not preclude their use in AC-only applications.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts (0230.250HXSP, 0230.250HXP, 0230.250MXP, 0230.250VXP) are electrically and mechanically equivalent to the 0230.250HXSW for AC applications at 250 V, 250 mA. The primary distinctions are:

Product Status: All substitute parts are active products, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Regulatory Compliance: All substitute parts are ROHS3 compliant and carry CE certification in addition to CSA and UL approvals, providing enhanced compliance for modern applications and international markets.

DC Voltage Capability: Substitute parts include DC voltage ratings (125 V DC) not specified in the main part. This additional capability does not affect AC-only applications and provides design flexibility for mixed-mode circuits.

Breaking Capacity: The 0230.250HXP variant specifies 350A AC breaking capacity, compared to 35A AC in other variants. This enhanced specification does not preclude use in standard applications and may provide additional safety margin in high-fault-current environments.

Selection among the four active substitutes should be based on inventory availability and specific application requirements for DC voltage capability or enhanced breaking capacity.

Frequently Asked Questions (FAQ)

Q: Can the 0230.250HXSP, 0230.250HXP, 0230.250MXP, or 0230.250VXP be used as direct replacements for the 0230.250HXSW?

A: Yes. All four parts are electrically and mechanically equivalent for 250 V AC, 250 mA applications. They share identical current rating, voltage rating, response time, fuse type, mounting configuration, physical dimensions, and melting I²t characteristics.

Q: What is the significance of the DC voltage rating in the substitute parts?

A: The substitute parts include 125 V DC ratings, which the main part does not specify. For AC-only applications, this additional DC rating does not affect performance. The parts remain fully compatible with existing AC circuit designs.

Q: Are there differences in breaking capacity among the substitute parts?

A: The 0230.250HXP specifies 350A AC breaking capacity, while 0230.250HXSP, 0230.250MXP, and 0230.250VXP specify 35A AC breaking capacity. All values are within acceptable ranges for this fuse class. The higher breaking capacity in 0230.250HXP provides additional margin in high-fault-current applications.

Q: Why are all substitute parts ROHS3 compliant when the main part is not?

A: The main part is classified as obsolete, predating current RoHS3 requirements. All active substitute parts meet current regulatory standards for hazardous substance restrictions, ensuring compliance with modern procurement and environmental regulations.

Q: Do the substitute parts have identical physical dimensions?

A: Yes. All substitute parts maintain the same cartridge dimensions: 0.177" diameter x 0.571" length (4.50mm x 14.50mm). They are mechanically interchangeable in existing through-hole fuse holders.

Q: Which substitute part should be selected for new designs?

A: Any of the four active substitutes are suitable for new designs. Selection should consider inventory availability, specific DC voltage requirements if applicable, and desired breaking capacity specifications. All parts carry equivalent regulatory approvals (CE, CSA, UL).