3JQ 4.6 Equivalent & Substitute Parts

Part Overview

The 3JQ 4.6 is a fast-blow glass cartridge fuse rated at 4.6 A, 350 V AC, and 140 V DC, designed for through-hole mounting in 2AG form factor (5mm x 15mm axial). This component is classified as obsolete, making identification of suitable substitutes essential for ongoing system maintenance and repair operations. The primary substitute maintains identical electrical and mechanical specifications while offering improved compliance status and active product availability.

Substiute Parts

3JQ 3.5

Bel Fuse Inc.In Stock: 8923JQ 3.5 Datasheet

Current PartRFQ

3JQ 3.5-R

Bel Fuse Inc.In Stock: 9833JQ 3.5-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3JQ 4.6 is determined by strict equivalence across the following critical parameters:

• Current Rating: 4.6 A (exact match required)
• Voltage Ratings: 350 V AC and 140 V DC (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 2AG, 5mm x 15mm (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Breaking Capacity: 100A AC, 150A DC (exact match required)
• Melting I²t: 9 (exact match required)
• Approval Agencies: CE, CSA, cURus, PSE (exact match required)

The 3JQ 4.6-R qualifies as a direct substitute, meeting all electrical and mechanical parameters while differing only in packaging configuration and compliance status.

Parameter Comparison

Engineering Selection Recommendations

The 3JQ 4.6-R is the direct substitute for the obsolete 3JQ 4.6. Both parts are manufactured by Bel Fuse Inc. and maintain identical electrical performance specifications, including current rating, voltage ratings, breaking capacity, and melting I²t characteristics. The 3JQ 4.6-R offers the advantage of active product status, ensuring continued availability for procurement and supply chain continuity.

The 3JQ 4.6-R achieves ROHS3 compliance, whereas the original 3JQ 4.6 is RoHS non-compliant. Both parts carry equivalent international approvals (CE, CSA, cURus, PSE), confirming suitability for regulated applications. The DC cold resistance differential (0.022 Ohms versus 0.023 Ohms) is negligible and does not affect functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can the 3JQ 4.6-R be used as a direct replacement for the 3JQ 4.6?

A: Yes. The 3JQ 4.6-R meets all electrical and mechanical specifications of the 3JQ 4.6, including current rating, voltage ratings, fuse type, response time, package form factor, and breaking capacity. Both parts are manufactured by Bel Fuse Inc. and carry identical international approvals.

Q: What is the difference between the 3JQ 4.6 and 3JQ 4.6-R?

A: The primary differences are product status and compliance. The 3JQ 4.6 is obsolete and RoHS non-compliant, while the 3JQ 4.6-R is an active product with ROHS3 compliance. The DC cold resistance values differ marginally (0.023 Ohms versus 0.022 Ohms), which is operationally insignificant.

Q: Are there packaging differences between these parts?

A: The 3JQ 4.6 is supplied in standard packaging, while the 3JQ 4.6-R is supplied in bulk packaging. Both maintain identical physical dimensions (5mm x 15mm, 2AG form factor) and through-hole mounting configuration.

Q: What approvals do these fuses carry?

A: Both the 3JQ 4.6 and 3JQ 4.6-R carry CE, CSA, cURus, and PSE approvals, confirming compliance with international safety and regulatory standards.

Q: Is the 3JQ 4.6-R suitable for applications requiring RoHS compliance?

A: Yes. The 3JQ 4.6-R is ROHS3 compliant, making it suitable for applications with RoHS requirements. The original 3JQ 4.6 is RoHS non-compliant and should not be used in such applications.