Littelfuse 0251.062MAT1 62mA 125V Axial Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0251.062MAT1 is a 62mA 125V AC/DC axial board mount fuse from the PICO® II 251 series. This component is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and ongoing production requirements. The substitute parts listed maintain identical electrical and mechanical specifications while offering improved product status and compliance certifications.

Substiute Parts

0251.062MAT1

Littelfuse Inc.In Stock: 11560251.062MAT1 Datasheet

Current PartRFQ

0251.062MAT1L

Littelfuse Inc.In Stock: 29110251.062MAT1L Datasheet

DirectRFQ

0251.062HAT1L

LittelfuseIn Stock: 12990251.062HAT1L Datasheet

Parametric EquivalentRFQ

0251.062NAT1L

Littelfuse Inc.In Stock: 10620251.062NAT1L Datasheet

Parametric EquivalentRFQ

0251.062PAT1L

Littelfuse Inc.In Stock: 8860251.062PAT1L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0251.062MAT1 is determined by strict equivalence across the following parameters:

• Current Rating: 62 mA (exact match required)
• Voltage Rating: 125 V AC and 125 V DC (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Through Hole Axial (exact match required)
• Breaking Capacity: 50A AC, 300A DC (exact match required)
• Melting I²t: 0.000113 (exact match required)
• Physical Dimensions: 0.110" Dia x 0.280" L (exact match required)
• DC Cold Resistance: 7 Ohms (exact match required)
• Operating Temperature: -55°C ~ 125°C (exact match required)
• Approval Certifications: CSA, cURus (exact match required)

All substitute parts listed below meet these criteria. Differences are limited to packaging format and product status (active vs. obsolete) and RoHS compliance level.

Parameter Comparison

Engineering Selection Recommendations

The 0251.062MAT1 is obsolete and should be replaced in new designs and production. All four substitute parts (0251.062MAT1L, 0251.062HAT1L, 0251.062NAT1L, 0251.062PAT1L) are active products with identical electrical and mechanical specifications.

Selection among active substitutes should be based on packaging requirements:

• 0251.062MAT1L: Cut Tape (CT) packaging, highest inventory availability (2839 pcs)
• 0251.062HAT1L: Cut Tape (CT) packaging, 1197 pcs available
• 0251.062NAT1L: Tape & Box (TB) packaging, 996 pcs available
• 0251.062PAT1L: Tape & Box (TB) packaging, 836 pcs available

All substitute parts carry ROHS3 compliance and REACH Unaffected status, providing improved regulatory alignment compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can I use 0251.062MAT1L as a direct replacement for 0251.062MAT1?

A: Yes. The 0251.062MAT1L is electrically and mechanically identical to the 0251.062MAT1. The primary differences are product status (active vs. obsolete), packaging format (Cut Tape vs. bulk), and RoHS compliance level. All electrical parameters, current rating, voltage rating, response time, breaking capacity, and physical dimensions are identical.

Q: What is the difference between Cut Tape (CT) and Tape & Box (TB) packaging?

A: Cut Tape (CT) packaging provides fuses on continuous tape in reel format, suitable for automated assembly processes. Tape & Box (TB) packaging provides the same tape format but includes a protective box for storage and handling. Both formats are compatible with standard pick-and-place equipment. Selection depends on your assembly process requirements and storage conditions.

Q: Are all substitute parts certified by CSA and cURus?

A: Yes. All substitute parts listed carry CSA and cURus approval certifications, maintaining the same regulatory compliance as the original 0251.062MAT1.

Q: What does ROHS3 Compliant mean compared to RoHS non-compliant?

A: ROHS3 Compliant indicates the part meets Restriction of Hazardous Substances Directive 3 requirements, restricting the use of specific hazardous materials. The original 0251.062MAT1 is RoHS non-compliant. All substitute parts are ROHS3 Compliant, providing improved environmental and regulatory compliance for new designs.

Q: Can I mix packaging formats in the same production run?

A: Yes. All substitute parts are electrically and mechanically identical. Packaging format differences do not affect component performance or compatibility. Selection can be based on inventory availability, assembly process requirements, or supply chain considerations.