Littelfuse 044707.5Y Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 044707.5Y is a 7.5 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 industrial and commercial applications. The part is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations.

Substiute Parts

044707.5Y

Littelfuse Inc.In Stock: 1145044707.5Y Datasheet

Current PartRFQ

044707.5YXP

Littelfuse Inc.In Stock: 732044707.5YXP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Littelfuse 044707.5Y is determined by strict equivalence across the following critical parameters:

• Current Rating: 7.5 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)
• Package / Case: Radial, Box (exact match required)
• Breaking Capacity @ Rated Voltage: 100 A AC, 50 A DC (exact match required)
• Melting I²t: 68 (exact match required)
• Physical Dimensions: 0.430" L x 0.150" W x 0.404" H (exact match required)
• DC Cold Resistance: 0.011 Ohms (exact match required)

The Littelfuse 044707.5YXP meets all substitution criteria as a direct functional equivalent within the 447 series fuse family.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 044707.5YXP is the direct substitute for the obsolete 044707.5Y. Both components are manufactured by Littelfuse Inc. within the 447 series and maintain identical electrical and mechanical specifications across all critical parameters.

The 044707.5YXP offers the advantage of active product status, ensuring continued availability and supply chain reliability. Additionally, the substitute part achieves ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements for new equipment designs and system upgrades.

For applications requiring the 044707.5Y, the 044707.5YXP provides full functional equivalence with improved compliance posture and ongoing manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the 044707.5YXP be used as a direct replacement for the 044707.5Y in existing designs?

A: Yes. The 044707.5YXP is electrically and mechanically identical to the 044707.5Y across all specified parameters, including current rating, voltage ratings, response time, breaking capacity, melting I²t, physical dimensions, and DC cold resistance. Through-hole mounting compatibility is maintained.

Q: What is the difference between the 044707.5Y and 044707.5YXP?

A: The primary differences are product status and regulatory compliance. The 044707.5Y is obsolete, while the 044707.5YXP is active. The substitute part is ROHS3 compliant and REACH unaffected, whereas the main part is RoHS non-compliant. All electrical and mechanical specifications remain identical.

Q: Are there packaging differences between these parts?

A: The 044707.5Y is supplied in box packaging, while the 044707.5YXP is supplied in bulk packaging. Both maintain the same radial, box case configuration for board mount installation.

Q: What certifications apply to both parts?

A: Both the 044707.5Y and 044707.5YXP carry CSA and UL approval agency certifications, confirming compliance with recognized safety standards for fuse components.

Q: Is the 044707.5YXP suitable for new equipment designs?

A: Yes. The 044707.5YXP is the recommended choice for new designs due to its active product status, ROHS3 compliance, and REACH unaffected designation, ensuring long-term availability and regulatory alignment.