Littelfuse 0473002.HAT1L Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0473002.HAT1L is a 2A 125VAC/VDC board mount fuse with axial through-hole configuration, designed for circuit protection in electronic equipment. This PICO® II 473 series fuse features slow-blow response characteristics and is actively manufactured. Substitute parts are identified when identical electrical and mechanical parameters are maintained across the same product series and manufacturer, ensuring direct interchangeability without circuit redesign.

Substiute Parts

0473002.HAT1L

Littelfuse Inc.In Stock: 11590473002.HAT1L Datasheet

Current PartRFQ

0473002.MAT1L

Littelfuse Inc.In Stock: 20590473002.MAT1L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 0473002.MAT1L is classified as a parametric equivalent based on identical electrical and mechanical specifications. Substitution eligibility is determined by the following critical parameters:

• Current Rating: 2 A (exact match)
• Voltage Rating: 125 V AC / 125 V DC (exact match)
• Response Time: Slow Blow (exact match)
• Mounting Type: Through Hole (exact match)
• Package / Case: Axial (exact match)
• Physical Dimensions: 0.135" Dia x 0.280" L (exact match)
• Breaking Capacity: 50A (exact match)
• Melting I²t: 7.6 (exact match)
• DC Cold Resistance: 0.0712 Ohms (exact match)
• Operating Temperature Range: -55°C ~ 125°C (exact match)
• Approval Agencies: CSA, PSE, UR (exact match)
• RoHS Compliance: ROHS3 Compliant (exact match)

Both parts belong to the PICO® II 473 series manufactured by Littelfuse Inc. and maintain active product status. The substitute part is suitable for direct replacement in existing designs without modification to PCB layout, schematic, or circuit parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the 0473002.HAT1L and 0473002.MAT1L are suitable for applications requiring 2A circuit protection at 125VAC/VDC with slow-blow response characteristics. Selection between these parts may be based on inventory availability and lead time considerations. The 0473002.MAT1L currently maintains higher inventory levels (1978 Pcs) compared to the 0473002.HAT1L (1118 Pcs). Both parts carry identical regulatory approvals (CSA, PSE, UR) and maintain ROHS3 compliance, making either part acceptable for designs subject to environmental and safety standards. The identical electrical performance, mechanical dimensions, and thermal operating range ensure functional equivalence in all circuit applications where the main part is specified.

Frequently Asked Questions (FAQ)

Q: Can 0473002.MAT1L be used as a direct replacement for 0473002.HAT1L?

A: Yes. Both parts are parametric equivalents with identical current ratings, voltage ratings, response time, physical dimensions, and electrical characteristics. No circuit modification or PCB redesign is required.

Q: Are there any differences in approval certifications between these parts?

A: No. Both parts carry identical regulatory approvals from CSA, PSE, and UR, and both comply with ROHS3 standards.

Q: What determines whether these parts are interchangeable?

A: Interchangeability is based on matching electrical parameters (2A current rating, 125V AC/DC voltage), mechanical specifications (axial through-hole package, 0.135" Dia x 0.280" L dimensions), response characteristics (slow-blow), and thermal operating range (-55°C ~ 125°C).

Q: Do these fuses have different thermal or electrical performance?

A: No. Both parts have identical melting I²t values (7.6), DC cold resistance (0.0712 Ohms), breaking capacity (50A), and operating temperature ranges.

Q: Which part should be selected based on availability?

A: Selection may be based on inventory status and procurement lead times. The 0473002.MAT1L currently has higher stock availability. Both parts maintain active product status with equivalent supply reliability.