Littelfuse 0473003.PARL Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0473003.PARL is a 3A 125VAC/VDC board mount fuse with axial through-hole configuration, designed for circuit protection in electronic applications. This PICO® II 473 series fuse features slow-blow response characteristics and is actively manufactured. Substitute parts are identified when packaging or inventory requirements necessitate alternative sourcing while maintaining identical electrical and mechanical specifications.

Substiute Parts

0473003.PARL

Littelfuse Inc.In Stock: 9200473003.PARL Datasheet

Current PartRFQ

0473003.MAT1L

Littelfuse Inc.In Stock: 18940473003.MAT1L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 0473003.MAT1L is classified as a parametric equivalent based on identical electrical and mechanical specifications. Substitution is valid when the following criteria are met:

Critical Parameters for Substitution:

• Current Rating: 3 A (identical)
• Voltage Rating AC/DC: 125 V / 125 V (identical)
• Response Time: Slow Blow (identical)
• Mounting Type: Through Hole (identical)
• Package / Case: Axial (identical)
• Breaking Capacity: 50 A (identical)
• Melting I²t: 21 (identical)
• Physical Dimensions: 0.135" Dia x 0.280" L (identical)
• DC Cold Resistance: 0.038 Ohms (identical)
• Operating Temperature Range: -55°C ~ 125°C (identical)
• Regulatory Compliance: CSA, PSE, UR (identical)

The only difference between the main part and substitute is the packaging format: Tape & Box (TB) versus Cut Tape (CT). This distinction affects supply chain logistics and inventory management but does not alter functional or electrical performance.

Parameter Comparison

Engineering Selection Recommendations

Both the 0473003.PARL and 0473003.MAT1L are active products manufactured by Littelfuse Inc. and carry identical regulatory certifications (CSA, PSE, UR). Both are ROHS3 compliant and REACH unaffected, meeting current environmental and compliance requirements.

Selection between these parts should be based on packaging requirements and supply chain considerations:

• 0473003.PARL (Tape & Box): Suitable for applications requiring bulk packaging with protective boxing for storage and transport.
• 0473003.MAT1L (Cut Tape): Suitable for automated assembly processes and applications where cut tape format is preferred for pick-and-place equipment.

Both parts are electrically and mechanically interchangeable for all circuit protection applications requiring 3A 125VAC/VDC slow-blow fuse protection with through-hole axial mounting.

Frequently Asked Questions (FAQ)

Q: Can 0473003.MAT1L be used as a direct replacement for 0473003.PARL?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, current rating, voltage rating, response time, physical dimensions, and regulatory approvals. The only difference is packaging format (Tape & Box versus Cut Tape), which does not affect functional performance.

Q: What does "Slow Blow" response time mean?

A: Slow Blow fuses tolerate temporary current surges without opening, responding only to sustained overcurrent conditions. This characteristic is identical in both parts.

Q: Are there any differences in breaking capacity or melting characteristics?

A: No. Both parts have identical breaking capacity (50A @ rated voltage) and melting I²t value (21), ensuring identical protection performance.

Q: Which packaging format should I select for my application?

A: Tape & Box (TB) format is standard for bulk storage and manual assembly. Cut Tape (CT) format is optimized for automated pick-and-place assembly lines. Electrical performance is identical.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both 0473003.PARL and 0473003.MAT1L carry CSA, PSE, and UR approvals, are ROHS3 compliant, and are REACH unaffected.

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

A: Both parts operate across -55°C to 125°C, providing performance across industrial and commercial temperature ranges.

Q: Is there a difference in DC cold resistance between the two parts?

A: No. Both parts have identical DC cold resistance of 0.038 Ohms.