Littelfuse 0447010.YP Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0447010.YP is a 10 A, 350 V AC / 125 V DC board mount fuse with fast blow response characteristics, designed for through-hole radial mounting in electronic assemblies. This part carries an obsolete product status, making identification of active equivalent alternatives essential for ongoing production support and component procurement.

The primary reason for identifying substitute parts is the obsolete classification of the original part number. Active equivalent models ensure continued availability and supply chain reliability for new designs or replacement inventory requirements.

Substiute Parts

0447010.YP

Littelfuse Inc.In Stock: 10570447010.YP Datasheet

Current PartRFQ

0447010.YXP

Littelfuse Inc.In Stock: 8630447010.YXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Littelfuse 0447010.YP is determined by strict equivalence across the following critical parameters:

• Current Rating: 10 A (exact match required)
• Voltage Rating - AC: 350 V (exact match required)
• Voltage Rating - DC: 125 V (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Fuse Type: Board Mount (Cartridge Style Excluded) (exact match required)
• Package / Case: Radial, Box (exact match required)
• Breaking Capacity @ Rated Voltage: 100 A AC, 50 A DC (exact match required)
• Melting I²t: 93 (exact match required)
• Physical Dimensions: 0.430" L x 0.150" W x 0.404" H (exact match required)
• DC Cold Resistance: 0.0073 Ohms (exact match required)

The substitute part 0447010.YXP meets all substitution criteria and represents the active equivalent within the Littelfuse 447 series.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0447010.YXP is the direct active equivalent for the obsolete 0447010.YP. Both parts are manufactured by Littelfuse Inc. within the 447 series and maintain identical electrical, mechanical, and thermal specifications.

The primary distinction is product status: 0447010.YP is classified as obsolete, while 0447010.YXP carries active status with confirmed inventory availability (846 pcs in stock). Both parts hold CSA and UL approvals and comply with ROHS3 requirements, ensuring regulatory compliance for new designs and replacement applications.

For procurement of new inventory or design revisions, 0447010.YXP is the appropriate selection. The packaging difference (box versus bulk) does not affect functional equivalence and reflects standard distribution variations.

Frequently Asked Questions (FAQ)

Q: Can 0447010.YXP be used as a direct replacement for 0447010.YP in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including current rating, voltage ratings, response time, physical dimensions, and thermal characteristics. The substitution is direct with no circuit modifications required.

Q: What is the difference between the box and bulk packaging options?

A: Packaging format does not affect component performance or electrical characteristics. Box packaging typically includes individual component packaging, while bulk packaging consolidates units for higher-volume procurement. Selection depends on inventory management and assembly process requirements.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both 0447010.YP and 0447010.YXP are ROHS3 compliant and hold CSA and UL approvals. The active status of 0447010.YXP ensures ongoing compliance with current regulatory requirements.

Q: Why is 0447010.YP classified as obsolete?

A: Obsolete classification indicates that the part is no longer in active production. The active equivalent 0447010.YXP provides continued supply chain support for applications requiring this fuse specification.

Q: Are the physical dimensions identical between both parts?

A: Yes. Both parts share identical dimensions of 0.430" L x 0.150" W x 0.404" H (10.92mm x 3.81mm x 10.26mm), ensuring mechanical compatibility in through-hole radial mounting applications.