Littelfuse 0447002.Y Equivalent & Substitute Parts

Part Overview

The Littelfuse 0447002.Y is a 2 A, 350 V AC / 125 V DC board mount fuse with fast blow response time, designed for through-hole radial mounting in electronic circuits. This part is classified as obsolete, making identification of active equivalent components essential for ongoing production and maintenance applications. The substitute part maintains identical electrical and mechanical specifications while offering improved availability and compliance status.

Substiute Parts

0447002.Y

Littelfuse Inc.In Stock: 8380447002.Y Datasheet

Current PartRFQ

0447002.YXP

Littelfuse Inc.In Stock: 51360447002.YXP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0447002.YXP is a direct substitute for the 0447002.Y based on identical electrical and mechanical parameters. Substitution is valid when the following criteria are met:

• Current rating: 2 A (exact match)
• Voltage rating AC: 350 V (exact match)
• Voltage rating DC: 125 V (exact match)
• Response time: Fast Blow (exact match)
• Mounting type: Through Hole (exact match)
• Package / Case: Radial, Box (exact match)
• Physical dimensions: 0.430" L x 0.150" W x 0.404" H (exact match)
• Breaking capacity: 100 A AC, 50 A DC (exact match)
• Melting I²t: 2.8 (exact match)
• Operating temperature range: -40°C ~ 125°C (exact match)
• DC cold resistance: 0.056 Ohms (exact match)

The primary distinction between these parts is product status and packaging configuration, not electrical or mechanical performance.

Parameter Comparison

Engineering Selection Recommendations

The 0447002.YXP is the recommended substitute for the obsolete 0447002.Y. Both parts are manufactured by Littelfuse Inc. and carry identical electrical and mechanical specifications, ensuring direct functional equivalence in circuit applications.

The 0447002.YXP offers the following advantages:

• Active product status with established supply chain availability
• ROHS3 compliance, meeting current environmental and regulatory requirements
• Bulk packaging option for production environments
• Identical performance characteristics across all rated parameters

Selection of the 0447002.YXP eliminates obsolescence risk while maintaining full compatibility with existing circuit designs and PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the 0447002.YXP be used as a direct replacement for the 0447002.Y in existing designs?

A: Yes. Both parts share identical electrical ratings (2 A, 350 V AC, 125 V DC), response time (fast blow), mounting configuration (through-hole radial), physical dimensions, and breaking capacity. No circuit modifications are required.

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

A: Box packaging (0447002.Y) is typically used for smaller quantity orders or legacy inventory. Bulk packaging (0447002.YXP) is standard for production environments and offers improved cost efficiency for higher volume applications.

Q: Does the RoHS3 compliance of the 0447002.YXP affect its electrical performance?

A: No. RoHS3 compliance reflects material composition and environmental standards only. Electrical and mechanical performance parameters remain identical to the non-compliant version.

Q: Are the physical dimensions identical between these two parts?

A: Yes. Both parts measure 0.430" L x 0.150" W x 0.404" H (10.92 mm x 3.81 mm x 10.26 mm) and use identical through-hole radial mounting, ensuring PCB compatibility without layout modifications.

Q: What certifications apply to both parts?

A: Both the 0447002.Y and 0447002.YXP carry CSA, METI, and UL approvals, meeting international safety and performance standards for board mount fuses.