Littelfuse 0473.750YRT1 Equivalent & Substitute Parts

Part Overview

The Littelfuse 0473.750YRT1 is a 750 mA, 125 V AC/DC board mount axial fuse with slow blow response characteristics, designed for through-hole PCB applications. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for seamless design substitution.

Substiute Parts

0473.750YRT1

Littelfuse Inc.In Stock: 11360473.750YRT1 Datasheet

Current PartRFQ

0473.750MRT1L

Littelfuse Inc.In Stock: 39480473.750MRT1L Datasheet

DirectRFQ

0473.750PF006L

Littelfuse Inc.In Stock: 10970473.750PF006L Datasheet

Parametric EquivalentRFQ

0473.750YRT1L

Littelfuse Inc.In Stock: 322150473.750YRT1L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0473.750YRT1 is determined by strict equivalence across all critical electrical and mechanical parameters: current rating (750 mA), AC/DC voltage ratings (125 V each), response time classification (Slow Blow), breaking capacity (50 A), melting I²t value (0.76), physical dimensions (0.135" Dia x 0.280" L), DC cold resistance (0.46 Ohms), and thermal operating range (-55°C ~ 125°C). All identified substitutes maintain these specifications identically. Packaging format differences (Cut Tape, Tape & Reel) represent logistics variations only and do not affect electrical or mechanical compatibility. The primary distinction between the obsolete main part and active substitutes is product status and RoHS compliance level.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (0473.750MRT1L, 0473.750PF006L, 0473.750YRT1L) are direct functional equivalents to the obsolete 0473.750YRT1, with identical electrical and mechanical specifications. Selection among these active alternatives should be based on procurement requirements and packaging format availability:

0473.750MRT1L and 0473.750YRT1L are supplied in Cut Tape format, suitable for manual assembly or small-volume production runs. 0473.750PF006L is supplied in Tape & Reel format, optimized for automated pick-and-place assembly processes and high-volume manufacturing.

All three substitutes carry ROHS3 compliance and REACH Unaffected status, providing regulatory advantage over the non-compliant main part. Inventory availability varies: 0473.750YRT1L offers the highest stock level (32,200 pcs), followed by 0473.750MRT1L (3,894 pcs) and 0473.750PF006L (1,067 pcs).

Frequently Asked Questions (FAQ)

Q: Can 0473.750MRT1L, 0473.750PF006L, and 0473.750YRT1L be used interchangeably with 0473.750YRT1?

A: Yes. All three parts are parametrically equivalent across all critical electrical and mechanical specifications: current rating, voltage ratings, response time, breaking capacity, melting I²t, physical dimensions, resistance, and thermal operating range. Substitution is direct without circuit modification.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Packaging format affects supply and assembly methodology only. Cut Tape (CT) is suitable for manual assembly or low-volume production. Tape & Reel (TR) is optimized for automated assembly equipment. Electrical and mechanical performance is identical across all packaging formats.

Q: Why is the main part 0473.750YRT1 marked as obsolete?

A: Product obsolescence typically reflects manufacturer discontinuation decisions. Active equivalents with improved compliance status (ROHS3) are available as direct replacements.

Q: Are there RoHS compliance differences between the substitutes?

A: No. All three active substitutes (0473.750MRT1L, 0473.750PF006L, 0473.750YRT1L) are ROHS3 Compliant and REACH Unaffected, providing consistent regulatory compliance across all alternatives.

Q: Which substitute should be selected for high-volume automated assembly?

A: 0473.750PF006L in Tape & Reel format is optimized for automated pick-and-place assembly processes typical of high-volume manufacturing environments.

Q: Do all substitutes maintain the same thermal operating range?

A: Yes. All substitutes operate across the identical temperature range of -55°C to 125°C, ensuring thermal compatibility in all application environments.