Littelfuse 0447005.Y Equivalent & Substitute Parts

Part Overview

The Littelfuse 0447005.Y is a 5 A board mount fuse rated for 350 V AC and 125 V DC operation. Designed for through-hole radial mounting in a box package configuration, this component provides fast-blow protection in electronic circuits requiring reliable overcurrent interruption. The part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

0447005.Y

Littelfuse Inc.In Stock: 11470447005.Y Datasheet

Current PartRFQ

0447005.YXP

Littelfuse Inc.In Stock: 18010447005.YXP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete Littelfuse 0447005.Y is based on electrical and mechanical parameter equivalence within the 447 series fuse family. The substitute part 0447005.YXP maintains identical electrical specifications: 5 A current rating, 350 V AC / 125 V DC voltage ratings, fast-blow response time, and 100 A AC / 50 A DC breaking capacity. Mechanical compatibility is preserved through identical through-hole radial mounting configuration and box package dimensions (0.430" L x 0.150" W x 0.404" H). Both parts share the same melting I²t value of 25, DC cold resistance of 0.018 Ohms, and operating temperature range of -40°C to 125°C. The primary distinction is product status and packaging format: the substitute part is active and available in bulk packaging, whereas the original part is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0447005.YXP is the direct active equivalent for the obsolete 0447005.Y. Both parts are manufactured by Littelfuse Inc. within the 447 series and maintain complete electrical and mechanical parameter equivalence. The substitute part offers improved regulatory compliance status: it is ROHS3 compliant and REACH unaffected, whereas the original part is RoHS non-compliant. For new designs and production applications requiring the electrical and mechanical specifications of the 0447005.Y, the 0447005.YXP provides full functional compatibility with enhanced environmental compliance. The active product status of the substitute part ensures continued availability and supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can the 0447005.YXP be used as a direct replacement for the 0447005.Y in existing circuit designs?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical current ratings (5 A), voltage ratings (350 V AC / 125 V DC), response time (fast blow), breaking capacity (100 A AC / 50 A DC), and physical dimensions (0.430" L x 0.150" W x 0.404" H). Through-hole radial mounting configuration and box package specifications are identical.

Q: What is the primary difference between these two parts?

A: The 0447005.Y is obsolete, while the 0447005.YXP is an active product. Additionally, the substitute part is ROHS3 compliant and REACH unaffected, whereas the original part is RoHS non-compliant.

Q: Are there any packaging differences between the main part and substitute?

A: The electrical and mechanical specifications are identical. The main part was available in standard packaging, while the substitute part is supplied in bulk packaging format.

Q: Do both parts carry the same regulatory approvals?

A: Yes. Both the 0447005.Y and 0447005.YXP carry CSA, METI, and UL approvals, ensuring compliance with international safety standards.

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

A: Both parts operate across the temperature range of -40°C to 125°C, providing consistent performance across industrial and commercial applications.