Littelfuse 0891025.H Automotive Miniature Blade Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0891025.H is a 25 A, 58 V DC automotive miniature blade fuse designed for fast-blow protection in automotive electrical systems. This component is part of the LP MINI® 891 series and requires a compatible fuse holder for installation. The part maintains active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified based on identical electrical ratings, mechanical dimensions, and performance characteristics within the LP MINI® 891 series.

Key Parameters

Parameter	Value
Current Rating	25 A
Voltage Rating (DC)	58 V
Response Time	Fast Blow
Package Type	Blade, Miniature (Low Profile)
Mounting Type	Requires Holder
Fuse Type	Automotive
Physical Dimensions	0.429" L x 0.150" W x 0.331" H (10.90mm x 3.80mm x 8.40mm)
Melting I²t	613
DC Cold Resistance	0.00256 Ohms
Operating Temperature Range	-40°C to 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 0891025.H are 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 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: 613 (exact match required)
DC Cold Resistance: 0.00256 Ohms (exact match required)
Operating Temperature Range: -40°C to 125°C (exact match required)
Series: LP MINI® 891 (exact match required)

The identified substitutes—0891025.U and 0891025.NXS—meet all these criteria. These parts differ only in breaking capacity specifications and inventory availability, which do not affect functional interchangeability in standard automotive fuse holder applications.

Parameter Comparison

Parameter	0891025.H	0891025.U	0891025.NXS
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.
Current Rating (Amps)	25 A	25 A	25 A
Voltage Rating - DC	58 V	58 V	58 V
Response Time	Fast Blow	Fast Blow	Fast Blow
Package / Case	Blade, Miniature (Low Profile)	Blade, Miniature (Low Profile)	Blade, Miniature (Low Profile)
Mounting Type	Requires Holder	Requires Holder	Requires Holder
Fuse Type	Automotive	Automotive	Automotive
Size / Dimension	0.429" L x 0.150" W x 0.331" H (10.90mm x 3.80mm x 8.40mm)	0.429" L x 0.150" W x 0.331" H (10.90mm x 3.80mm x 8.40mm)	0.429" L x 0.150" W x 0.331" H (10.90mm x 3.80mm x 8.40mm)
Melting I²t	613	613	613
DC Cold Resistance	0.00256 Ohms	0.00256 Ohms	0.00256 Ohms
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Color	Clear	Clear	Clear
Series	LP MINI® 891	LP MINI® 891	LP MINI® 891
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All three parts—0891025.H, 0891025.U, and 0891025.NXS—maintain active product status and full compliance with RoHS3 and REACH requirements. Selection between these equivalents should be based on inventory availability and application-specific breaking capacity requirements. The 0891025.H features a breaking capacity of 10 kA at rated voltage, while both 0891025.U and 0891025.NXS specify 1 kA breaking capacity. For applications requiring higher breaking capacity performance, the 0891025.H is the appropriate selection. For standard automotive fuse applications within normal operating parameters, all three parts are functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Can 0891025.U or 0891025.NXS be used as direct replacements for 0891025.H?

A: Yes, both parts are parametric equivalents with identical electrical ratings (25 A, 58 V DC), response time (Fast Blow), physical dimensions, and thermal characteristics. The primary difference is breaking capacity: 0891025.H provides 10 kA, while 0891025.U and 0891025.NXS provide 1 kA. For standard automotive applications, all three are interchangeable.

Q: What is the significance of the breaking capacity difference?

A: Breaking capacity defines the maximum fault current the fuse can safely interrupt without rupturing or creating a hazard. The 0891025.H (10 kA) is rated for higher fault current environments. Selection depends on the maximum prospective short-circuit current in the specific application circuit.

Q: Are these fuses compatible with all LP MINI® 891 series holders?

A: Yes. All three parts share identical physical dimensions (0.429" L x 0.150" W x 0.331" H) and mounting type (Requires Holder), ensuring compatibility with any fuse holder designed for the LP MINI® 891 series miniature blade configuration.

Q: Do all three parts meet automotive compliance standards?

A: All three parts are classified as Automotive fuses with active product status. All maintain ROHS3 compliance and REACH unaffected designation, meeting current automotive regulatory requirements.

Q: What is the operating temperature range for these fuses?

A: All three parts operate across -40°C to 125°C, suitable for standard automotive underhood and interior applications.

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