Littelfuse 0891025.NXT Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0891025.NXT is a 25 A, 58 V DC automotive blade fuse with miniature (low profile) form factor, designed for fast-blow protection in automotive electrical systems. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new designs. Direct manufacturer equivalents from the LP MINI® 891 series provide functional interchangeability while maintaining identical electrical and mechanical specifications.

Substiute Parts

0891025.NXT

Littelfuse Inc.In Stock: 7410891025.NXT Datasheet

Current PartRFQ

0891025.NXS

Littelfuse Inc.In Stock: 52240891025.NXS Datasheet

DirectRFQ

0891025.H

Littelfuse Inc.In Stock: 11290891025.H Datasheet

Parametric EquivalentRFQ

0891025.U

Littelfuse Inc.In Stock: 11900891025.U Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0891025.NXT is determined by strict equivalence across the following critical parameters:

• Current Rating: 25 A (exact match required)
• Voltage Rating (DC): 58 V (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: Blade, Miniature (Low Profile) (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Physical Dimensions: 0.429" L x 0.150" W x 0.331" H (exact match required)
• DC Cold Resistance: 0.00256 Ohms (exact match required)
• Melting I²t: 613 (exact match required)
• Operating Temperature Range: -40°C ~ 125°C (exact match required)

All substitute parts listed below meet these criteria and are manufactured by Littelfuse Inc. within the LP MINI® 891 series. Differences in Breaking Capacity and product status do not affect functional interchangeability for the specified electrical and mechanical requirements.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the 0891025.NXT, the following active alternatives are available:

0891025.NXS - Direct equivalent with active product status and bulk packaging. Identical electrical and mechanical specifications. Recommended for standard replacement applications where the original part is no longer available.

0891025.H - Parametric equivalent with enhanced Breaking Capacity (10kA vs. 1kA). Active product status. Suitable for applications requiring higher breaking capacity while maintaining all other electrical and mechanical parameters.

0891025.U - Direct equivalent with active product status and bulk packaging. Identical electrical and mechanical specifications to the main part. Recommended for standard replacement applications.

All substitute parts are ROHS3 compliant and maintain the same operating temperature range, moisture sensitivity level, and DC cold resistance as the original part. Selection between alternatives should be based on availability, packaging requirements, and breaking capacity specifications for the target application.

Frequently Asked Questions (FAQ)

Q: Can 0891025.NXS be used as a direct replacement for 0891025.NXT?

A: Yes. Both parts share identical current rating (25 A), voltage rating (58 V DC), response time (Fast Blow), physical dimensions, DC cold resistance, melting I²t, and operating temperature range. The primary difference is product status: 0891025.NXT is obsolete while 0891025.NXS is active.

Q: What is the difference between 0891025.H and the other substitutes?

A: The 0891025.H has a Breaking Capacity of 10kA compared to 1kA for 0891025.NXT, 0891025.NXS, and 0891025.U. All other electrical and mechanical parameters are identical. The higher breaking capacity provides enhanced protection capability in the same form factor.

Q: Are all substitute parts compatible with existing fuse holders designed for 0891025.NXT?

A: Yes. All substitute parts use the identical Blade, Miniature (Low Profile) package with dimensions of 0.429" L x 0.150" W x 0.331" H (10.90mm x 3.80mm x 8.40mm). They require the same holder type and are mechanically interchangeable.

Q: What packaging options are available for these substitutes?

A: The main part (0891025.NXT) was supplied with standard packaging. Substitute parts 0891025.NXS, 0891025.H, and 0891025.U are available in bulk packaging.

Q: Are all these parts RoHS compliant?

A: Yes. All parts listed—0891025.NXT, 0891025.NXS, 0891025.H, and 0891025.U—are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: Which substitute should I choose if the original part is obsolete?

A: For standard applications, 0891025.NXS or 0891025.U are recommended as they maintain identical specifications to the original. If higher breaking capacity is required, 0891025.H is the appropriate choice. All three are active products with confirmed inventory availability.