MQ 1.5 Equivalent & Substitute Parts

Part Overview

The MQ 1.5 is a 1.5 A board mount axial fuse rated for 125 V AC/DC operation, manufactured by Bel Fuse Inc. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The MQ 1.5 serves as a protective device in electronic circuits requiring fast-blow response characteristics and through-hole mounting configuration.

Substiute Parts

MQ 1.5

Bel Fuse Inc.In Stock: 1151MQ 1.5 Datasheet

Current PartRFQ

025101.5MXL

Littelfuse Inc.In Stock: 1550025101.5MXL Datasheet

DirectRFQ

025101.5NRT1L

Littelfuse Inc.In Stock: 80374025101.5NRT1L Datasheet

DirectRFQ

7010.7080.13

SCHURTER Inc.In Stock: 13587010.7080.13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MQ 1.5 is determined by strict equivalence across the following parameters: current rating (1.5 A), AC voltage rating (125 V), DC voltage rating (125 V), response time (fast blow), mounting type (through hole), and fuse type (board mount, cartridge style excluded). All identified substitutes maintain these core electrical and mechanical specifications, ensuring functional interchangeability in the original circuit application.

The substitute parts are grouped by manufacturer and packaging configuration while maintaining identical electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (025101.5MXL, 025101.5NRT1L, and 7010.7080.13) are active products with current manufacturing status, providing long-term availability compared to the obsolete MQ 1.5.

The Littelfuse PICO® II 251 series parts (025101.5MXL and 025101.5NRT1L) maintain identical electrical specifications and operating temperature range to the original component. These parts carry CSA, cURus, and PSE certifications. The 025101.5NRT1L offers the highest inventory availability in cut tape packaging, suitable for automated assembly processes. The 025101.5MXL provides bulk packaging for manual assembly or lower-volume applications.

The SCHURTER 7010.7080.13 meets all core electrical requirements with CSA and UR certifications. The operating temperature maximum is reduced to 85°C compared to the original 125°C specification. Physical dimensions differ slightly across all substitutes due to manufacturing tolerances and design variations, but all maintain through-hole axial mounting compatibility.

Frequently Asked Questions (FAQ)

Q: Can 025101.5MXL, 025101.5NRT1L, and 7010.7080.13 be used interchangeably with MQ 1.5?

A: Yes. All three parts maintain identical current rating (1.5 A), voltage ratings (125 V AC/DC), response time (fast blow), and mounting type (through hole). Electrical performance is equivalent for circuit protection applications.

Q: What is the difference between 025101.5MXL and 025101.5NRT1L?

A: Both are Littelfuse PICO® II 251 series parts with identical electrical specifications. The primary difference is packaging: 025101.5MXL is supplied in bulk, while 025101.5NRT1L is supplied in cut tape. Select based on assembly process requirements.

Q: Does the SCHURTER 7010.7080.13 have any limitations compared to the Littelfuse substitutes?

A: The SCHURTER part has a reduced maximum operating temperature of 85°C versus 125°C for the Littelfuse alternatives. If the application requires operation above 85°C, use 025101.5MXL or 025101.5NRT1L instead.

Q: Are all substitutes RoHS compliant?

A: The Littelfuse parts (025101.5MXL and 025101.5NRT1L) are ROHS3 compliant. The SCHURTER 7010.7080.13 is also ROHS3 compliant. All parts are REACH unaffected.

Q: What certifications do these substitutes carry?

A: Littelfuse parts carry CSA, cURus, PSE, and TUV certifications. The SCHURTER part carries CSA and UR certifications. Verify certification requirements for your specific application.

Q: Are physical dimensions identical across all substitutes?

A: No. While all parts maintain through-hole axial mounting, physical dimensions vary slightly. The MQ 1.5 is 0.125" diameter × 0.280" length. Littelfuse substitutes are 0.110" diameter × 0.280" length. The SCHURTER part is 0.093" diameter × 0.315" length. Verify PCB footprint compatibility before selection.