Littelfuse 164.6185.5152 Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 164.6185.5152 is a 15 A, 32 V DC automotive blade fuse (ATO/ATC package) with fast-blow response characteristics. This part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing system maintenance and component procurement. The FKS ATO® series designation and fast-blow response profile define the functional requirements for direct substitution.

Substiute Parts

164.6185.5152

Littelfuse Inc.In Stock: 1031164.6185.5152 Datasheet

Current PartRFQ

0287015.PXCN

LittelfuseIn Stock: 2901000287015.PXCN Datasheet

DirectRFQ

0287015.PXS

Littelfuse Inc.In Stock: 27740287015.PXS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete Littelfuse 164.6185.5152 is determined by strict equivalence across the following parameters:

• Current Rating: 15 A (exact match required)
• Voltage Rating (DC): 32 V (exact match required)
• Package / Case: Blade, ATO/ATC (exact match required)
• Fuse Type: Automotive (exact match required)
• Mounting Type: Requires Holder (exact match required)

The identified substitute parts (0287015.PXCN and 0287015.PXS) satisfy all mandatory electrical and mechanical parameters. Both are active Littelfuse products from the ATOF® series, providing direct functional equivalence to the obsolete FKS ATO® original part.

Parameter Comparison

Engineering Selection Recommendations

Both 0287015.PXCN and 0287015.PXS are active Littelfuse products suitable for replacing the obsolete 164.6185.5152. Selection between the two substitutes should be based on the following criteria:

0287015.PXCN is recommended for applications requiring CSA and UL certification with an operating temperature range of -40°C to 105°C. This part is available in bulk packaging with substantial inventory (290,001 pieces).

0287015.PXS is suitable for applications with extended operating temperature requirements (-40°C to 125°C) and 1 kA breaking capacity specification. Inventory availability is 2,700 pieces in bulk packaging.

Both parts maintain ROHS3 compliance and are electrically equivalent at the 15 A, 32 V DC specification level. Dimensional variations between the original and substitutes are minor and do not affect ATO/ATC holder compatibility.

Frequently Asked Questions (FAQ)

Q: Can 0287015.PXCN and 0287015.PXS be used interchangeably?

A: Both parts meet the core electrical and mechanical requirements (15 A, 32 V DC, Blade ATO/ATC package). Selection depends on operating temperature range and certification requirements specific to the application.

Q: Are there dimensional differences between the original and substitute parts?

A: Minor dimensional variations exist. The original 164.6185.5152 measures 0.748" L x 0.197" W x 0.520" H, while both substitutes measure 0.752" L x 0.201" W x 0.484" H. These differences remain within ATO/ATC holder compatibility tolerances.

Q: What is the significance of the DC Cold Resistance difference in 0287015.PXS?

A: The DC Cold Resistance value of 4.8 Ohms for 0287015.PXS differs from the original (0.0045 Ohms) and 0287015.PXCN (0.0048 Ohms). This parameter is provided in the specification data and should be evaluated against application requirements.

Q: Which substitute has better certification coverage?

A: 0287015.PXCN carries CSA and UL approvals. 0287015.PXS does not list approval agencies in the provided data. For applications requiring specific certifications, 0287015.PXCN is the appropriate selection.

Q: What is the difference in Melting I²t between the original and substitutes?

A: The original 164.6185.5152 has a Melting I²t of 250, while both substitutes (0287015.PXCN and 0287015.PXS) have a Melting I²t of 340. This parameter is provided in the specification data and should be evaluated for circuit protection requirements.