Littelfuse 0251007.MAT1 PICO® II 251 7A 125VAC/VDC Board Mount Axial Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0251007.MAT1 is a 7A 125VAC/125VDC board mount axial fuse from the PICO® II 251 series, designed for through-hole mounting applications. This part is currently obsolete. Equivalent and substitute parts are available from the same manufacturer with identical electrical and mechanical specifications but different packaging configurations and active product status, making them suitable replacements for new designs and production requirements.

Substiute Parts

0251007.MAT1

Littelfuse Inc.In Stock: 10130251007.MAT1 Datasheet

Current PartRFQ

0251007.MAT1L

Littelfuse Inc.In Stock: 27040251007.MAT1L Datasheet

DirectRFQ

0251007.HAT1L

Littelfuse Inc.In Stock: 11010251007.HAT1L Datasheet

Parametric EquivalentRFQ

0251007.MAT1JL

Littelfuse Inc.In Stock: 8080251007.MAT1JL Datasheet

Parametric EquivalentRFQ

0251007.NAT1JL

Littelfuse Inc.In Stock: 10180251007.NAT1JL Datasheet

Parametric EquivalentRFQ

0251007.NAT1L

Littelfuse Inc.In Stock: 8880251007.NAT1L Datasheet

Parametric EquivalentRFQ

0251007.PAT1L

Littelfuse Inc.In Stock: 11370251007.PAT1L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0251007.MAT1 are classified based on the following criteria:

Direct Manufacturer Equivalent: Parts with identical electrical specifications, mechanical dimensions, and performance characteristics but different packaging formats. The primary distinction is packaging type (Cut Tape vs. Tape & Box) and product status (Active vs. Obsolete).

Parametric Equivalents: Parts that maintain all critical electrical parameters (current rating, voltage rating, response time, breaking capacity, melting I²t, and resistance) and mechanical specifications (size, mounting type, case style) across the PICO® II 251 series.

Key Parameters Determining Substitutability:

• Current Rating: 7 A (fixed across all substitutes)
• Voltage Rating: 125 V AC / 125 V DC (fixed across all substitutes)
• Response Time: Fast Blow (fixed across all substitutes)
• Mounting Type: Through Hole Axial (fixed across all substitutes)
• Physical Dimensions: 0.110" Dia x 0.280" L (fixed across all substitutes)
• Melting I²t: 10.4 (fixed across all substitutes)
• DC Cold Resistance: 0.0107 Ohms (fixed across all substitutes)
• Operating Temperature: -55°C ~ 125°C (fixed across all substitutes)

Variable Parameters (Packaging & Compliance):

• Packaging: Cut Tape (CT) or Tape & Box (TB)
• Product Status: Active or Obsolete
• RoHS Compliance: RoHS non-compliant (main part) vs. ROHS3 Compliant (substitutes)
• Breaking Capacity: 50A AC, 300A DC (standard) or 70A AC, 300A DC (0251007.MAT1JL variant)

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Production: Select 0251007.MAT1L as the primary replacement. This part maintains direct manufacturer equivalence with the obsolete 0251007.MAT1, offers active product status ensuring long-term availability, and achieves ROHS3 compliance. Cut Tape packaging is suitable for automated assembly processes.

For Tape & Box Packaging Requirements: Choose from 0251007.MAT1JL, 0251007.NAT1L, or 0251007.PAT1L. All three maintain identical electrical and mechanical specifications with ROHS3 compliance and active product status. Selection between these variants depends on specific procurement and inventory management requirements.

Breaking Capacity Consideration: The 0251007.MAT1JL variant provides enhanced breaking capacity of 70A AC (compared to 50A AC in other variants) while maintaining all other electrical parameters. This variant is suitable for applications requiring higher fault current withstand capability.

Compliance Status: All substitute parts are ROHS3 compliant and REACH unaffected, addressing regulatory requirements that the obsolete 0251007.MAT1 does not meet. All parts maintain CSA, cURus, and TUV certifications.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the 0251007.MAT1?

A: Yes, all listed substitute parts are electrically and mechanically equivalent to the 0251007.MAT1. The primary differences are packaging format (Cut Tape vs. Tape & Box), product status (Active vs. Obsolete), and RoHS compliance. Selection depends on your assembly process and procurement requirements.

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

A: Cut Tape packaging is supplied on continuous tape and is typically used for automated pick-and-place assembly. Tape & Box packaging includes the tape wound in a box, suitable for manual assembly or specific inventory management practices. Both formats contain identical components.

Q: Why should I choose an active product over the obsolete 0251007.MAT1?

A: Active products have guaranteed long-term availability, ongoing manufacturing support, and compliance with current regulatory standards. Obsolete parts have limited stock and no future production, making them unsuitable for new designs or long-term production runs.

Q: Does the 0251007.MAT1JL with 70A AC breaking capacity affect circuit operation?

A: No. Breaking capacity is a safety rating that determines the maximum fault current the fuse can safely interrupt. A higher breaking capacity does not affect normal circuit operation at the 7A rated current. The 0251007.MAT1JL is suitable for applications with higher potential fault currents.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, whereas the original 0251007.MAT1 is RoHS non-compliant. This compliance is important for applications subject to RoHS regulations.

Q: What certifications do these fuses carry?

A: All parts, including the original and substitutes, carry CSA, cURus, and TUV approvals, ensuring compliance with North American and international safety standards.