Littelfuse 0337005.PX2S Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0337005.PX2S is a 5A automotive blade fuse rated for 32V DC operation. This MICRO2™ series fuse is designed for automotive electrical protection applications requiring a compact blade-type form factor. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same fuse category and packaging specification.

Substiute Parts

0337005.PX2S

Littelfuse Inc.In Stock: 15860337005.PX2S Datasheet

Current PartRFQ

0337005.LXS

Littelfuse Inc.In Stock: 8240337005.LXS Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0337005.PX2S is determined by strict equivalence across the following critical parameters:

• Current Rating: 5 A (exact match required)
• Voltage Rating (DC): 32 V (exact match required)
• Package / Case: Blade, Micro (exact match required)
• Fuse Type: Automotive (exact match required)
• Melting I²t: 17 (exact match required)
• Operating Temperature Range: -40°C ~ 125°C (exact match required)
• Physical Dimensions: 0.567" L x 0.165" W x 0.417" H (exact match required)

The substitute part 0337005.LXS meets all these criteria and is therefore classified as a parametric equivalent within the Littelfuse automotive fuse portfolio.

Parameter Comparison

Engineering Selection Recommendations

Both the 0337005.PX2S and 0337005.LXS are active production parts from Littelfuse Inc. with identical electrical and mechanical specifications. Selection between these parts may be based on packaging quantity requirements (bulk versus 50-piece packaging) and current inventory availability. Both parts maintain full RoHS3 compliance and REACH unaffected status, meeting automotive regulatory requirements. The DC cold resistance specification differs between parts (0.0174 Ohms versus 17.4 mOhms), which represents equivalent values expressed in different units and does not affect functional substitution.

Frequently Asked Questions (FAQ)

Q: Can 0337005.LXS be used as a direct replacement for 0337005.PX2S in automotive applications?

A: Yes. Both parts are parametric equivalents with identical current rating (5A), voltage rating (32V DC), package type (Blade, Micro), melting I²t (17), and operating temperature range (-40°C ~ 125°C). They are mechanically and electrically interchangeable.

Q: What is the difference between these two part numbers?

A: The primary difference is packaging configuration. The 0337005.PX2S is supplied in bulk packaging, while the 0337005.LXS is supplied in 50-piece packaging. All electrical and mechanical parameters are identical.

Q: Are both parts suitable for the same automotive fuse holder?

A: Yes. Both parts use the Blade, Micro package type and require a compatible fuse holder. The physical dimensions are identical (0.567" L x 0.165" W x 0.417" H), ensuring mechanical compatibility with the same holder assembly.

Q: Do these parts meet automotive compliance standards?

A: Yes. Both parts are RoHS3 compliant and REACH unaffected, meeting current automotive regulatory requirements. Both are classified as active production parts.

Q: What does the melting I²t value of 17 indicate?

A: The melting I²t of 17 specifies the thermal energy required to melt the fuse element. This value is identical for both parts and determines the fuse's response characteristics under overcurrent conditions.