Littelfuse 0891010.NXT Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0891010.NXT is a 10A, 58V DC automotive blade fuse in the LP MINI® 891 series, designed for miniature (low profile) applications requiring fast-blow protection. This part is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing procurement and system maintenance. Substitute parts must maintain identical electrical ratings, mechanical dimensions, and performance characteristics to ensure direct interchangeability in automotive fuse holder applications.

Substiute Parts

0891010.NXT

Littelfuse Inc.In Stock: 8500891010.NXT Datasheet

Current PartRFQ

0891010.NXS

Littelfuse Inc.In Stock: 118310891010.NXS Datasheet

DirectRFQ

0891010.H

Littelfuse Inc.In Stock: 18230891010.H Datasheet

Parametric EquivalentRFQ

0891010.U

Littelfuse Inc.In Stock: 9090891010.U Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0891010.NXT is determined by strict equivalence across the following parameters:

• Current Rating: 10 A (exact match required)
• Voltage Rating (DC): 58 V (exact match required)
• Response Time: Fast Blow (exact match required)
• Package Type: Blade, Miniature (Low Profile) (exact match required)
• Physical Dimensions: 0.429" L x 0.150" W x 0.331" H (exact match required)
• Melting I²t: 102 (exact match required)
• DC Cold Resistance: 0.00759 Ohms (exact match required)
• Operating Temperature Range: -40°C ~ 125°C (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required)

All identified substitute parts meet these criteria. Variations in Breaking Capacity and product status (Active vs. Obsolete) do not affect substitution eligibility when all other parameters are identical.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the obsolete 0891010.NXT, direct substitution is supported by three active alternatives: 0891010.NXS, 0891010.H, and 0891010.U. All three parts maintain full electrical and mechanical equivalence with the original specification.

0891010.NXS is supplied in bulk packaging and represents the most direct replacement, maintaining identical breaking capacity (1kA) and all electrical parameters.

0891010.H is supplied in bulk packaging with an elevated breaking capacity of 10kA, providing enhanced fault current handling while maintaining all other electrical and thermal characteristics. This variant is suitable for applications requiring higher fault current protection margins.

0891010.U is supplied in bulk packaging with breaking capacity matching the original specification (1kA) and represents an alternative active source for the same electrical performance profile.

All three substitutes are ROHS3 compliant and carry active product status, ensuring long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can 0891010.NXS, 0891010.H, and 0891010.U be used interchangeably with 0891010.NXT?

A: Yes. All three parts are parametric equivalents meeting the core substitution criteria: 10A current rating, 58V DC voltage rating, fast-blow response, miniature blade package, identical dimensions, matching melting I²t value, and equivalent DC cold resistance. Physical interchangeability in automotive fuse holders is confirmed.

Q: What is the difference between 0891010.H and the other substitutes?

A: The 0891010.H variant features a breaking capacity of 10kA compared to 1kA in 0891010.NXS and 0891010.U. This higher breaking capacity provides enhanced protection in circuits with elevated fault current potential. All other electrical and mechanical parameters remain identical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. 0891010.NXS, 0891010.H, and 0891010.U are all ROHS3 compliant, matching the compliance status of the original 0891010.NXT.

Q: What packaging options are available for the substitute parts?

A: All three substitute parts are supplied in bulk packaging, differing from the original 0891010.NXT which was supplied with standard packaging designation.

Q: Why is the original 0891010.NXT classified as obsolete?

A: Product obsolescence reflects Littelfuse manufacturing and distribution decisions. Active alternatives with identical specifications ensure continued availability for replacement and new applications.

Q: Are there any thermal or performance differences between the substitutes?

A: No. All substitutes maintain the identical operating temperature range (-40°C ~ 125°C), melting I²t value (102), and DC cold resistance (0.00759 Ohms) as the original part.