2JQ 1.25 Equivalent & Substitute Parts

Part Overview

The 2JQ 1.25 is a fast-blow glass cartridge fuse rated at 1.25 A, 350 V AC, and 140 V DC, manufactured by Bel Fuse Inc. This component is designed for use in 2AG holder applications with a 5mm x 15mm form factor. The main part (2JQ 1.25) is currently listed as obsolete, making identification of active equivalent parts essential for ongoing system support and component procurement.

Substiute Parts

2JQ 1.25

Bel Fuse Inc.In Stock: 8132JQ 1.25 Datasheet

Current PartRFQ

2JQ 1.25-R

Bel Fuse Inc.In Stock: 29042JQ 1.25-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 2JQ 1.25 is based on electrical and mechanical parameter equivalence. The substitute part must maintain identical specifications across the following critical parameters:

• Current Rating: 1.25 A
• Voltage Rating (AC/DC): 350 V AC / 140 V DC
• Fuse Type: Cartridge, Glass (Fast Blow)
• Package / Case: 2AG, 5mm x 15mm
• Breaking Capacity: 100A AC, 150A DC
• Melting I²t: 0.8
• Approval Agencies: CE, CSA, cURus, PSE

The 2JQ 1.25-R meets all these requirements and is classified as an active product with improved RoHS3 compliance status.

Parameter Comparison

Engineering Selection Recommendations

The 2JQ 1.25-R is the direct active equivalent for the obsolete 2JQ 1.25. Both parts are manufactured by Bel Fuse Inc. and maintain identical electrical and mechanical specifications. The 2JQ 1.25-R offers the additional advantage of ROHS3 compliance, meeting current regulatory requirements. All required approval agencies (CE, CSA, cURus, PSE) are maintained across both variants. The DC cold resistance difference (0.075 Ohms vs. 0.07 Ohms) falls within acceptable tolerance for this component category and does not affect functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 2JQ 1.25-R be used as a direct replacement for the 2JQ 1.25?

A: Yes. Both parts share identical current ratings, voltage ratings, fuse type, package dimensions, breaking capacity, and approval certifications. The 2JQ 1.25-R is the active equivalent.

Q: What is the difference between the 2JQ 1.25 and 2JQ 1.25-R?

A: The primary differences are product status and RoHS compliance. The 2JQ 1.25 is obsolete and RoHS non-compliant, while the 2JQ 1.25-R is active and ROHS3 compliant. DC cold resistance differs slightly (0.075 Ohms vs. 0.07 Ohms), which is within acceptable tolerance.

Q: Are both parts compatible with 2AG holders?

A: Yes. Both the 2JQ 1.25 and 2JQ 1.25-R are designed for 2AG holder applications with a 5mm x 15mm form factor.

Q: What certifications apply to the 2JQ 1.25-R?

A: The 2JQ 1.25-R carries CE, CSA, cURus, and PSE approvals, matching the certification profile of the original 2JQ 1.25.

Q: Is the 2JQ 1.25-R available in different packaging options?

A: The 2JQ 1.25-R is available in bulk packaging. The original 2JQ 1.25 packaging specification was not provided in the available data.