Littelfuse 0447005.YP Equivalent & Substitute Parts

Part Overview

The Littelfuse 0447005.YP is a 5 A, 350 V AC / 125 V DC board mount fuse with fast blow response characteristics, designed for through-hole radial mounting in electronic circuit protection applications. This part is classified as obsolete, making identification of active equivalent components essential for ongoing procurement and design continuity. The substitute part maintains identical electrical and mechanical specifications while offering improved availability through active product status.

Substiute Parts

0447005.YP

Littelfuse Inc.In Stock: 10150447005.YP Datasheet

Current PartRFQ

0447005.YXP

Littelfuse Inc.In Stock: 18010447005.YXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 0447005.YXP is classified as a direct equivalent based on the following criteria:

Electrical Parameters Match:

• Current Rating: 5 A (identical)
• Voltage Rating - AC: 350 V (identical)
• Voltage Rating - DC: 125 V (identical)
• Response Time: Fast Blow (identical)
• Breaking Capacity @ Rated Voltage: 100 A AC, 50 A DC (identical)
• Melting I²t: 25 (identical)
• DC Cold Resistance: 0.018 Ohms (identical)

Mechanical Parameters Match:

• Mounting Type: Through Hole (identical)
• Fuse Type: Board Mount (Cartridge Style Excluded) (identical)
• Package / Case: Radial, Box (identical)
• Size / Dimension: 0.430" L x 0.150" W x 0.404" H (identical)

Compliance & Certification Match:

• Approval Agency: CSA, METI, UL (identical)
• RoHS Status: ROHS3 Compliant (identical)
• Moisture Sensitivity Level: 2 (1 Year) (identical)

Distinction: The primary difference is product status: 0447005.YP is obsolete, while 0447005.YXP is active. The packaging differs (box vs. bulk), with the substitute available in bulk packaging and higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The 0447005.YXP is a direct functional and mechanical equivalent to the 0447005.YP. Selection between these parts is determined by availability and procurement requirements:

For New Designs and Ongoing Production: Use 0447005.YXP. This part carries active product status from Littelfuse Inc., ensuring long-term availability and supply chain continuity. It maintains identical electrical performance, mechanical compatibility, and regulatory compliance (CSA, METI, UL certifications; ROHS3 compliance).

For Legacy System Maintenance: The 0447005.YXP provides direct substitution for existing applications using 0447005.YP. The identical current rating (5 A), voltage ratings (350 V AC / 125 V DC), response time (fast blow), and physical dimensions ensure drop-in compatibility in through-hole radial mounting applications.

Compliance Considerations: Both parts meet identical regulatory requirements: CSA, METI, and UL approvals; ROHS3 compliance; EAR99 export classification; and HTSUS code 8536.10.0040. No compliance re-evaluation is required when substituting 0447005.YXP for 0447005.YP.

Frequently Asked Questions (FAQ)

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

A: Yes. The 0447005.YXP is a direct equivalent. All electrical parameters (5 A current rating, 350 V AC / 125 V DC voltage ratings, fast blow response, 100 A AC / 50 A DC breaking capacity), mechanical specifications (through-hole radial mounting, 0.430" L x 0.150" W x 0.404" H dimensions), and regulatory certifications (CSA, METI, UL) are identical. No circuit modifications are required.

Q: What is the primary reason to transition from 0447005.YP to 0447005.YXP?

A: The 0447005.YP is classified as obsolete, while 0447005.YXP maintains active product status. This ensures continued availability, supply chain reliability, and manufacturer support for new procurement and production requirements.

Q: Are there any differences in packaging between these two parts?

A: The primary packaging difference is that 0447005.YP is supplied in box packaging, while 0447005.YXP is available in bulk packaging. Both contain identical fuse components with the same electrical and mechanical specifications.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both 0447005.YP and 0447005.YXP carry identical approvals: CSA, METI, and UL certifications. Both are ROHS3 compliant, carry EAR99 export classification, and share the same HTSUS code (8536.10.0040). Moisture Sensitivity Level is 2 (1 Year) for both parts.

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

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

Q: Are there any inventory or lead time considerations when selecting between these parts?

A: The 0447005.YXP has higher inventory availability (1713 Pcs) compared to 0447005.YP (954 Pcs). Given the obsolete status of 0447005.YP, 0447005.YXP is the recommended choice for new procurement to ensure supply continuity.