Littelfuse 044707.5YP Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 044707.5YP is a 7.5 A board mount fuse rated for 350 V AC and 125 V DC operation. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing system support and procurement planning. The substitute part maintains identical electrical and mechanical specifications while offering current product availability.

Substiute Parts

044707.5YP

Littelfuse Inc.In Stock: 810044707.5YP Datasheet

Current PartRFQ

044707.5YXP

Littelfuse Inc.In Stock: 732044707.5YXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 044707.5YXP qualifies as a direct substitute for the 044707.5YP based on identical electrical and mechanical parameters. Substitution is determined by the following critical parameters:

• Current Rating: 7.5 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)
• Breaking Capacity @ Rated Voltage: 100 A AC, 50 A DC (exact match)
• Melting I²t: 68 (exact match)
• Operating Temperature Range: -40°C ~ 125°C (exact match)
• Physical Dimensions: 0.430" L x 0.150" W x 0.404" H (exact match)
• DC Cold Resistance: 0.011 Ohms (exact match)
• Approval Agency: CSA, UL (exact match)
• RoHS Status: ROHS3 Compliant (exact match)

The primary distinction between these parts is product status and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The 044707.5YXP is the direct replacement for the obsolete 044707.5YP. Both parts carry identical CSA and UL approvals and maintain ROHS3 compliance. The substitute part is currently in active production status with confirmed inventory availability. Selection of the 044707.5YXP eliminates obsolescence risk while preserving all electrical performance and safety certifications required for the application.

Frequently Asked Questions (FAQ)

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

A: Yes. The 044707.5YXP is electrically and mechanically identical to the 044707.5YP across all specified parameters, including current rating, voltage ratings, response time, physical dimensions, and thermal characteristics.

Q: What is the difference between the two part numbers?

A: The primary differences are product status and packaging configuration. The 044707.5YP is obsolete and supplied in box packaging, while the 044707.5YXP is an active product supplied in bulk packaging.

Q: Are the approval certifications the same?

A: Yes. Both parts carry CSA and UL approvals and are ROHS3 compliant.

Q: Do the physical dimensions match for PCB layout purposes?

A: Yes. Both parts have identical dimensions of 0.430" L x 0.150" W x 0.404" H (10.92 mm x 3.81 mm x 10.26 mm) and use the same through-hole radial mounting configuration.

Q: Is there a difference in electrical performance?

A: No. Both parts have identical current ratings (7.5 A), voltage ratings (350 V AC, 125 V DC), breaking capacity (100 A AC, 50 A DC), melting I²t (68), and DC cold resistance (0.011 Ohms).