Equivalent & Substitute Parts for 3JQ 1

Part Overview

The 3JQ 1 is a 1 A, 350 V AC / 140 V DC fast-blow glass cartridge fuse in 2AG package format (5mm x 15mm axial). This component is classified as obsolete and has been superseded by active production alternatives. Locating equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

3JQ 1

Bel Fuse Inc.In Stock: 10723JQ 1 Datasheet

Current PartRFQ

3JQ 1-R

Bel Fuse Inc.In Stock: 20833JQ 1-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3JQ 1-R qualifies as a direct substitute for the 3JQ 1 based on the following electrical and mechanical parameters:

• Current Rating: 1 A (identical)
• Voltage Rating - AC: 350 V (identical)
• Voltage Rating - DC: 140 V (identical)
• Fuse Type: Cartridge, Glass (identical)
• Response Time: Fast Blow (identical)
• Package / Case: 2AG, 5mm x 15mm (Axial) (identical)
• Mounting Type: Through Hole (identical)
• Breaking Capacity @ Rated Voltage: 100A AC, 150A DC (identical)
• Operating Temperature Range: -55°C ~ 125°C (identical)
• Approval Agencies: CE, CSA, cURus, PSE (identical)

Both parts share the same series designation (3JQ) and are manufactured by Bel Fuse Inc. The 3JQ 1-R is the active production equivalent with enhanced RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The 3JQ 1-R is the recommended substitute for the obsolete 3JQ 1. Both parts maintain identical electrical ratings, breaking capacity, and thermal operating range. The 3JQ 1-R carries active product status with full availability from the manufacturer and meets RoHS3 compliance requirements, making it suitable for new designs and production applications. Both parts hold equivalent certifications from CE, CSA, cURus, and PSE approval agencies, ensuring regulatory compliance across target markets.

Frequently Asked Questions (FAQ)

Q: Can the 3JQ 1-R be used as a direct replacement for the 3JQ 1?

A: Yes. The 3JQ 1-R is electrically and mechanically equivalent to the 3JQ 1. Both parts share identical current ratings (1 A), voltage ratings (350 V AC / 140 V DC), fuse type (cartridge glass), response time (fast blow), package format (2AG, 5mm x 15mm axial), and breaking capacity (100A AC, 150A DC).

Q: What is the difference between the 3JQ 1 and 3JQ 1-R?

A: The primary differences are product status and regulatory compliance. The 3JQ 1 is obsolete and RoHS non-compliant, while the 3JQ 1-R is an active production part with RoHS3 compliance. Minor variations exist in melting I²t (0.46 vs. 0.62) and DC cold resistance (0.098 vs. 0.112 Ohms), but these do not affect functional substitution within the specified electrical parameters.

Q: Are both parts approved by the same certification agencies?

A: Yes. Both the 3JQ 1 and 3JQ 1-R carry identical approvals from CE, CSA, cURus, and PSE, ensuring compliance with international safety and performance standards.

Q: What is the package format for these fuses?

A: Both parts use the 2AG package format with dimensions of 5mm diameter x 15mm length in axial configuration, suitable for through-hole mounting on PCBs and in fuse holders rated for 2AG cartridges.

Q: Can these fuses be used in both AC and DC circuits?

A: Yes. Both parts are rated for 350 V AC and 140 V DC operation, making them suitable for dual-voltage applications within these specified limits.