Littelfuse 0891015.NXT Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0891015.NXT is a 15A, 58V DC automotive blade fuse in the LP MINI® 891 series, designed for miniature (low profile) applications requiring fast-blow response characteristics. This part is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing procurement and system integration. Substitute parts maintain identical electrical and mechanical specifications while offering improved product status and availability.

Substiute Parts

0891015.NXT

Littelfuse Inc.In Stock: 11560891015.NXT Datasheet

Current PartRFQ

0891015.NXS

Littelfuse Inc.In Stock: 54190891015.NXS Datasheet

DirectRFQ

0891015.H

Littelfuse Inc.In Stock: 27110891015.H Datasheet

Parametric EquivalentRFQ

0891015.U

Littelfuse Inc.In Stock: 20980891015.U Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters:

• Current Rating: 15 A (exact match required)
• Voltage Rating (DC): 58 V (exact match required)
• Fuse Type: Automotive (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)
• Series: LP MINI® 891 (exact match required)
• Operating Temperature Range: -40°C to 125°C (exact match required)
• Size / Dimension: 0.429" L x 0.150" W x 0.331" H (exact match required)
• DC Cold Resistance: 0.0047 Ohms (exact match required)
• Melting I²t: 198 (exact match required)

All three substitute parts (0891015.NXS, 0891015.H, 0891015.U) meet these criteria. The primary distinction is product status: the main part is obsolete, while all substitutes are active. Secondary differences include breaking capacity ratings and packaging configurations.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are direct functional equivalents to the 0891015.NXT. Selection should be based on the following criteria:

0891015.NXS: Recommended as the primary substitute. Maintains identical breaking capacity (1kA) to the original part, ensuring circuit protection characteristics remain unchanged. Active product status with highest inventory availability (5400 pcs) supports long-term procurement continuity. Bulk packaging configuration is standard for production environments.

0891015.H and 0891015.U: Acceptable alternatives with enhanced breaking capacity (10kA). The increased breaking capacity provides superior fault current handling without affecting normal operation. Both parts maintain active product status with adequate inventory levels. Selection between these two variants depends on packaging requirements and supply chain preferences, as electrical and mechanical specifications are identical.

All substitute parts maintain ROHS3 compliance and identical operating temperature ranges, ensuring compatibility with existing thermal management and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can 0891015.NXS, 0891015.H, and 0891015.U be used interchangeably with 0891015.NXT?

A: Yes. All three parts are parametric equivalents meeting identical electrical and mechanical specifications: 15A current rating, 58V DC voltage rating, fast-blow response, miniature blade package, and -40°C to 125°C operating temperature range. The primary difference is product status—the original part is obsolete while all substitutes are active.

Q: What is the significance of the different breaking capacity ratings (1kA vs. 10kA)?

A: Breaking capacity defines the maximum fault current the fuse can safely interrupt. The 0891015.NXS maintains the original 1kA rating, while 0891015.H and 0891015.U provide 10kA capacity. For applications where fault current does not exceed 1kA, either variant is suitable. For systems with higher fault current potential, the 10kA variants provide enhanced protection margins.

Q: Are there any compliance or certification differences between the substitute parts?

A: No. All parts maintain identical ROHS3 compliance, MSL rating of 1 (Unlimited), and equivalent regulatory classifications (ECCN: EAR99, HTSUS: 8536.10.0040). The 0891015.NXS, 0891015.H, and 0891015.U additionally carry REACH Unaffected status.

Q: Does packaging configuration affect electrical performance?

A: No. Packaging (bulk vs. other configurations) affects only procurement and handling logistics, not electrical or mechanical performance. All parts are functionally identical regardless of packaging method.

Q: Which substitute should be selected for new designs?

A: For new designs, any of the three active substitutes are acceptable. Selection should prioritize 0891015.NXS for direct specification continuity with the original part, or 0891015.H/0891015.U if enhanced fault current protection is required by system specifications.