2JQ 7 Equivalent & Substitute Parts

Part Overview

The 2JQ 7 is a fast-blow glass cartridge fuse rated at 7 A, 350 V AC, and 140 V DC, manufactured by Bel Fuse Inc. in the 2AG form factor (5mm x 15mm). This component is classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and redesign applications. The primary substitute maintains identical electrical and mechanical specifications while offering improved compliance status and active product availability.

Substiute Parts

2JQ 7

Bel Fuse Inc.In Stock: 9452JQ 7 Datasheet

Current PartRFQ

2JQ 7-R

Bel Fuse Inc.In Stock: 28712JQ 7-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2JQ 7 is determined by strict equivalence across all critical electrical and mechanical parameters. The allowed substitution criteria are:

• Current Rating: 7 A (exact match required)
• Voltage Rating - AC: 350 V (exact match required)
• Voltage Rating - DC: 140 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 2AG, 5mm x 15mm (exact match required)
• Breaking Capacity @ Rated Voltage: 100A AC, 150A DC (exact match required)
• Melting I²t: 46 (exact match required)
• DC Cold Resistance: 0.01 Ohms (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Approval Agencies: CE, CSA, cURus, PSE (exact match required)

The 2JQ 7-R meets all substitution criteria and is the direct equivalent for the obsolete 2JQ 7.

Parameter Comparison

Engineering Selection Recommendations

The 2JQ 7-R is the direct functional equivalent of the 2JQ 7 and is suitable for all applications requiring the 2JQ 7 specification. The 2JQ 7-R offers the following advantages:

• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance aligns with current environmental and regulatory requirements
• Identical electrical and mechanical parameters guarantee drop-in compatibility
• Same manufacturer (Bel Fuse Inc.) and approval certifications (CE, CSA, cURus, PSE) maintain design integrity

Frequently Asked Questions (FAQ)

Q: Can the 2JQ 7-R be used as a direct replacement for the 2JQ 7?

A: Yes. The 2JQ 7-R is electrically and mechanically identical to the 2JQ 7 across all critical parameters, including current rating, voltage ratings, fuse type, response time, package dimensions, breaking capacity, and operating temperature range. It is a direct substitute.

Q: What is the difference between the 2JQ 7 and 2JQ 7-R?

A: The primary differences are product status and compliance. The 2JQ 7 is obsolete and RoHS non-compliant, while the 2JQ 7-R is an active product with ROHS3 compliance. All electrical and mechanical specifications are identical.

Q: Are there any compatibility concerns when switching from 2JQ 7 to 2JQ 7-R?

A: No. Both parts use the identical 2AG form factor (5mm x 15mm) and require the same holder. They are fully compatible in all circuit applications designed for the 2JQ 7.

Q: What certifications apply to the 2JQ 7-R?

A: The 2JQ 7-R carries CE, CSA, cURus, and PSE approvals, matching the certification profile of the original 2JQ 7.

Q: Why is the 2JQ 7 listed as obsolete?

A: The 2JQ 7 has been discontinued by the manufacturer. The 2JQ 7-R is the active replacement that maintains full functional equivalence.