Littelfuse 0891005.NXT Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0891005.NXT is a 5A, 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 maintenance. Substitute parts maintain identical electrical and mechanical specifications while offering improved availability through active product status designations.

Substiute Parts

0891005.NXT

Littelfuse Inc.In Stock: 7770891005.NXT Datasheet

Current PartRFQ

0891005.NXS

Littelfuse Inc.In Stock: 92740891005.NXS Datasheet

DirectRFQ

0891005.H

Littelfuse Inc.In Stock: 10290891005.H Datasheet

Parametric EquivalentRFQ

0891005.U

Littelfuse Inc.In Stock: 17310891005.U Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0891005.NXT is determined by strict equivalence across the following critical parameters: current rating (5 A), voltage rating (58 V DC), fuse type (automotive), response time (fast blow), package configuration (blade, miniature low-profile), and physical dimensions (10.90mm x 3.80mm x 8.40mm). All identified substitutes maintain these core specifications without deviation.

The substitute parts are grouped into two categories based on breaking capacity at rated voltage:

Direct Equivalent (1kA Breaking Capacity): 0891005.NXS maintains identical breaking capacity to the main part.

Parametric Equivalent (10kA Breaking Capacity): 0891005.H and 0891005.U provide enhanced breaking capacity while preserving all other electrical and mechanical parameters. These parts are suitable for applications where higher fault current handling is required or beneficial.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: 0891005.NXS is the direct functional equivalent with matching 1kA breaking capacity and active product status. This part is suitable for direct replacement in applications where the original 1kA specification is required.

Alternative Selection: 0891005.H and 0891005.U are parametric equivalents offering 10kA breaking capacity. These parts are appropriate for applications where enhanced fault current handling provides system benefits or where higher breaking capacity is specified in updated design requirements. Both parts maintain active product status and full ROHS3 compliance.

All substitute parts are manufactured by Littelfuse Inc. within the LP MINI® 891 series and are ROHS3 compliant with MSL rating of 1 (unlimited moisture sensitivity).

Frequently Asked Questions (FAQ)

Q: Can 0891005.NXS be used as a direct replacement for 0891005.NXT?

A: Yes. The 0891005.NXS maintains identical electrical specifications (5A, 58V DC, fast-blow response), mechanical dimensions, and breaking capacity (1kA). The primary difference is product status: 0891005.NXS is active while 0891005.NXT is obsolete.

Q: What is the difference between the 1kA and 10kA breaking capacity variants?

A: Breaking capacity defines the maximum fault current the fuse can safely interrupt at rated voltage. The 0891005.NXS maintains the original 1kA specification. The 0891005.H and 0891005.U provide 10kA breaking capacity, offering enhanced performance in high fault-current environments. All other electrical and mechanical parameters remain identical.

Q: Are the physical dimensions identical across all substitute parts?

A: Yes. All parts measure 0.429" L x 0.150" W x 0.331" H (10.90mm x 3.80mm x 8.40mm) and are classified as blade, miniature (low-profile) configuration. They are mechanically interchangeable within the same fuse holder.

Q: Do all substitute parts require a fuse holder?

A: Yes. All parts in this comparison are automotive blade fuses requiring a dedicated holder for mounting. They are not panel-mount or solder-in configurations.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The 0891005.NXS, 0891005.H, and 0891005.U are all ROHS3 compliant with MSL rating of 1 (unlimited).