Littelfuse 0474.600YRT1L Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0474.600YRT1L is a 500 mA, 125 V AC/DC board mount axial fuse from the PICO® II 473 series. This component is designed for through-hole PCB applications requiring slow-blow fuse protection in low-voltage circuits. The part is currently active in production with full inventory availability. Substitute parts are necessary to accommodate different packaging requirements, supply chain constraints, or procurement specifications while maintaining identical electrical and mechanical performance.

Substiute Parts

0473.500YRT1L

Littelfuse Inc.In Stock: 482710473.500YRT1L Datasheet

Current PartRFQ

0473.500MRT1L

Littelfuse Inc.In Stock: 26610473.500MRT1L Datasheet

DirectRFQ

0473.500HAT1L

Littelfuse Inc.In Stock: 8280473.500HAT1L Datasheet

Parametric EquivalentRFQ

0473.500MAT1L

Littelfuse Inc.In Stock: 11150473.500MAT1L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

All substitute parts for the Littelfuse 0474.600YRT1L maintain identical electrical specifications and mechanical compatibility. Substitution is determined by the following critical parameters:

• Current Rating: 500 mA (all substitutes match)
• Voltage Rating: 125 V AC / 125 V DC (all substitutes match)
• Response Time: Slow Blow (all substitutes match)
• Package / Case: Axial (all substitutes match)
• Physical Dimensions: 0.135" Dia x 0.280" L (all substitutes match)
• Mounting Type: Through Hole (all substitutes match)
• Approval Agencies: CSA, UR (all substitutes match)
• RoHS Compliance: ROHS3 Compliant (all substitutes match)

The primary difference among the main part and substitutes is packaging format: the 0474.600YRT1L is supplied in Tape & Reel (TR) format, while substitute parts 0474.600MRT1L, 0474.600HAT1L, and 0474.600MAT1L are supplied in Cut Tape (CT) format. All parts are functionally and mechanically interchangeable for PCB assembly applications.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts are active production components with full regulatory compliance. Selection among 0474.600YRT1L, 0474.600MRT1L, 0474.600HAT1L, and 0474.600MAT1L should be based on packaging format requirements:

• 0474.600YRT1L (Tape & Reel): Primary choice for high-volume automated assembly operations requiring reel-based component feeding.
• 0474.600MRT1L, 0474.600HAT1L, 0474.600MAT1L (Cut Tape): Suitable for lower-volume production, manual assembly, or procurement scenarios where cut tape packaging is specified.

All parts carry identical CSA and UR approvals, ROHS3 compliance, and electrical specifications. No functional or performance differences exist between these parts when used in equivalent circuit applications.

Frequently Asked Questions (FAQ)

Q: Can I substitute 0474.600MRT1L for 0474.600YRT1L in my PCB assembly?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format: 0474.600YRT1L is supplied in Tape & Reel format, while 0474.600MRT1L is supplied in Cut Tape format. Substitution is valid for any through-hole PCB assembly application.

Q: Are there any electrical performance differences between these substitute parts?

A: No. All parts share identical electrical specifications: 500 mA current rating, 125 V AC/DC voltage rating, slow-blow response time, 50A breaking capacity, and 1.13 Ohms DC cold resistance.

Q: Do all substitute parts have the same physical dimensions?

A: Yes. All parts are 0.135" diameter by 0.280" length (3.43mm x 7.11mm) and are designed for through-hole axial mounting on PCBs.

Q: Which substitute part should I choose if I need the lowest inventory lead time?

A: 0474.600YRT1L has the highest inventory level at 48,200 pieces. If cut tape packaging is acceptable, 0474.600MRT1L offers 2,580 pieces in stock.

Q: Are all these parts RoHS compliant?

A: Yes. All parts are ROHS3 compliant and carry CSA and UR regulatory approvals.

Q: Can I use these parts interchangeably in a design revision?

A: Yes, provided your assembly process can accommodate the packaging format. Electrically and mechanically, all parts are fully interchangeable for 500 mA, 125 V AC/DC fuse applications.