Littelfuse 0473002.MAT1L Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0473002.MAT1L is a 2A 125VAC/VDC board mount fuse in axial package configuration, designed for through-hole PCB mounting applications. This PICO® II 473 series fuse features slow-blow response characteristics and is actively manufactured. Equivalent and substitute parts are identified when all critical electrical and mechanical parameters remain identical, ensuring direct interchangeability in circuit protection applications without design modification.

Substiute Parts

0473002.MAT1L

Littelfuse Inc.In Stock: 20590473002.MAT1L Datasheet

Current PartRFQ

0473002.HAT1L

Littelfuse Inc.In Stock: 11590473002.HAT1L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0473002.MAT1L is determined by strict equivalence across all critical parameters. The substitute part 0473002.HAT1L qualifies as a direct equivalent based on the following criteria:

• Identical current rating: 2 A
• Identical voltage ratings: 125 V AC and 125 V DC
• Identical response time classification: Slow Blow
• Identical mounting configuration: Through Hole, Axial package
• Identical physical dimensions: 0.135" Dia x 0.280" L (3.43mm x 7.11mm)
• Identical breaking capacity: 50 A @ rated voltage
• Identical melting I²t value: 7.6
• Identical DC cold resistance: 0.0712 Ohms
• Identical operating temperature range: -55°C ~ 125°C
• Identical regulatory compliance: CSA, PSE, UR approvals
• Identical RoHS status: ROHS3 Compliant

Both parts belong to the same PICO® II 473 series and share identical electrical and mechanical specifications, confirming full interchangeability.

Parameter Comparison

Engineering Selection Recommendations

Both the 0473002.MAT1L and 0473002.HAT1L are active products manufactured by Littelfuse Inc. with identical electrical specifications and regulatory certifications. Selection between these parts may be based on inventory availability and packaging format (both supplied in Cut Tape). The 0473002.MAT1L currently maintains higher inventory levels (1978 pcs) compared to the 0473002.HAT1L (1118 pcs). Both parts carry CSA, PSE, and UR approvals, confirming compliance for their intended circuit protection applications. ROHS3 compliance and REACH unaffected status apply uniformly across both parts.

Frequently Asked Questions (FAQ)

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

A: Yes. Both parts are electrically and mechanically identical with matching current ratings (2A), voltage ratings (125V AC/DC), response time (Slow Blow), physical dimensions (0.135" Dia x 0.280" L), and all electrical characteristics. Direct substitution is valid without circuit modification.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution requires matching current rating, AC and DC voltage ratings, response time classification, mounting type, package configuration, physical dimensions, breaking capacity, melting I²t value, and DC cold resistance. All these parameters are identical between the main part and substitute.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical regulatory approvals (CSA, PSE, UR), ROHS3 compliance status, and REACH unaffected designation. Compliance profiles are equivalent.

Q: What is the difference between the two part numbers if all specifications are identical?

A: The part numbers differ only in their internal designation suffix (.MAT1L vs .HAT1L), which may reflect different manufacturing batches, tape reels, or internal Littelfuse tracking codes. Electrical and mechanical performance remains identical.

Q: Can these fuses be used in both AC and DC circuits?

A: Yes. Both parts are rated for 125V AC and 125V DC operation, permitting use in either circuit type within the specified voltage limits.

Q: What is the significance of the "Slow Blow" response time?

A: Slow Blow fuses tolerate temporary inrush currents without nuisance tripping, making them suitable for circuits with transient current spikes. The melting I²t value of 7.6 defines the thermal energy threshold for fuse activation.