Littelfuse 0251007.PAT1L Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0251007.PAT1L is a 7 A, 125 V AC/DC board mount fuse in axial package configuration, part of the PICO® II 251 series. This through-hole component is designed for circuit protection in electronic applications requiring fast-blow response characteristics. The part is currently active in production with full regulatory compliance (CSA, cURus, TUV certifications) and ROHS3 compliance status. Substitute parts are identified based on identical electrical ratings, mechanical dimensions, and performance specifications while accommodating different packaging formats for procurement flexibility.

Substiute Parts

0251007.PAT1L

Littelfuse Inc.In Stock: 11370251007.PAT1L Datasheet

Current PartRFQ

0251007.HAT1L

Littelfuse Inc.In Stock: 11010251007.HAT1L Datasheet

Parametric EquivalentRFQ

0251007.MAT1L

Littelfuse Inc.In Stock: 27040251007.MAT1L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0251007.PAT1L are qualified based on the following critical parameters that determine functional and mechanical interchangeability:

• Current Rating: 7 A (exact match required)
• Voltage Rating: 125 V AC / 125 V DC (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: Axial (exact match required)
• Size / Dimension: 0.110" Dia x 0.280" L (exact match required)
• Breaking Capacity: 50A AC, 300A DC (exact match required)
• Melting I²t: 10.4 (exact match required)
• DC Cold Resistance: 0.0107 Ohms (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Regulatory Certifications: CSA, cURus, TUV (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required)

The identified substitutes differ only in packaging format (Tape & Box versus Cut Tape), which does not affect electrical performance or mechanical fit. All substitute parts maintain identical electrical characteristics, thermal performance, and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

All three parts—0251007.PAT1L, 0251007.HAT1L, and 0251007.MAT1L—are functionally equivalent for circuit protection applications requiring 7 A, 125 V AC/DC fast-blow fuse performance. Selection between these parts should be based on procurement packaging requirements and inventory availability:

• 0251007.PAT1L (Tape & Box): Suitable for applications requiring bulk packaging with protective boxing for storage and handling.
• 0251007.HAT1L (Cut Tape): Suitable for automated assembly processes utilizing cut tape feeding systems; 1012 units in stock.
• 0251007.MAT1L (Cut Tape): Suitable for automated assembly processes utilizing cut tape feeding systems; highest inventory availability at 2612 units.

All parts maintain identical electrical performance, thermal characteristics, mechanical dimensions, and regulatory compliance certifications (CSA, cURus, TUV). Selection does not impact circuit protection performance or reliability.

Frequently Asked Questions (FAQ)

Q: Can 0251007.HAT1L or 0251007.MAT1L be used as direct replacements for 0251007.PAT1L?

A: Yes. All three parts are parametric equivalents with identical electrical ratings (7 A, 125 V AC/DC), response time (Fast Blow), mechanical dimensions (0.110" Dia x 0.280" L), and regulatory certifications. The only difference is packaging format (Tape & Box versus Cut Tape), which does not affect electrical performance or mechanical fit in the circuit.

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

A: Tape & Box packaging provides fuses on continuous tape with protective boxing for manual handling and storage. Cut Tape packaging provides fuses on continuous tape without boxing, optimized for automated pick-and-place assembly equipment. Both formats contain the same component with identical specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All three parts—0251007.PAT1L, 0251007.HAT1L, and 0251007.MAT1L—are ROHS3 compliant and carry identical regulatory certifications (CSA, cURus, TUV).

Q: Do the substitute parts have the same breaking capacity and melting I²t?

A: Yes. All substitute parts maintain identical breaking capacity (50A AC, 300A DC) and melting I²t (10.4), ensuring equivalent circuit protection performance.

Q: Which substitute part has the best inventory availability?

A: 0251007.MAT1L has the highest inventory availability at 2612 units in stock, compared to 1068 units for 0251007.PAT1L and 1012 units for 0251007.HAT1L.