Littelfuse 0229.350MXP Fuse Cartridge: Equivalent & Substitute Parts

Part Overview

The Littelfuse 0229.350MXP is an active-status glass cartridge fuse rated for 350 mA at 250 V AC and 125 V DC. This slow-blow fuse is designed for 2AG holder applications with a 5mm x 15mm form factor. Substitute parts are identified when electrical ratings, mechanical dimensions, fuse type, response characteristics, and holder compatibility remain identical across the product line.

Substiute Parts

0229.350MXP

Littelfuse Inc.In Stock: 7820229.350MXP Datasheet

Current PartRFQ

0229.350HXP

Littelfuse Inc.In Stock: 12050229.350HXP Datasheet

Parametric EquivalentRFQ

0229.350MXSP

Littelfuse Inc.In Stock: 27450229.350MXSP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0229.350MXP are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitutability:

• Current Rating: 350 mA (exact match required)
• Voltage Ratings: 250 V AC and 125 V DC (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 2AG, 5mm x 15mm (exact match required)
• Breaking Capacity: 35A AC, 10kA DC (exact match required)
• Melting I²t: 0.49 (exact match required)
• Operating Temperature: -55°C ~ 125°C (exact match required)
• DC Cold Resistance: 1.31 Ohms (exact match required)
• Regulatory Compliance: CE, CSA, UL certifications (exact match required)

All substitute parts listed below meet these criteria and are manufactured by Littelfuse Inc. within the 229 series.

Parameter Comparison

Engineering Selection Recommendations

All three parts—0229.350MXP, 0229.350HXP, and 0229.350MXSP—are active-status products manufactured by Littelfuse Inc. with identical electrical and mechanical specifications. Each part carries CE, CSA, and UL certifications and maintains ROHS3 compliance. Selection between these parts may be based on inventory availability and lead time requirements, as all parts are functionally equivalent for 350 mA, 250 V AC / 125 V DC fuse applications requiring 2AG holder compatibility.

Frequently Asked Questions (FAQ)

Q: Can 0229.350HXP or 0229.350MXSP be used as direct replacements for 0229.350MXP?

A: Yes. All three parts share identical electrical ratings (350 mA, 250 V AC, 125 V DC), fuse type (cartridge, glass), response time (slow blow), mechanical dimensions (2AG, 5mm x 15mm), breaking capacity, melting I²t, operating temperature range, and regulatory certifications. They are direct functional equivalents.

Q: Are there any differences in holder compatibility?

A: No. All three parts require the same 2AG holder type and are mechanically identical at 5mm x 15mm dimensions.

Q: Do all substitute parts meet the same regulatory standards?

A: Yes. Each part carries CE, CSA, and UL certifications and is ROHS3 compliant.

Q: What determines whether a fuse can substitute for the 0229.350MXP?

A: Substitutability is determined by exact matching of current rating, AC/DC voltage ratings, fuse type, response time, package dimensions, breaking capacity, melting I²t, operating temperature range, DC cold resistance, and regulatory certifications.

Q: Are there inventory considerations when selecting between these parts?

A: Yes. The 0229.350MXSP has the highest inventory level at 2653 pieces, followed by 0229.350HXP at 1181 pieces, and 0229.350MXP at 681 pieces. Availability may influence procurement decisions.