3JQ 1.5 Equivalent & Substitute Parts

Part Overview

The 3JQ 1.5 is a fast-blow glass cartridge fuse rated for 1.5 A at 350 V AC and 140 V DC, housed in a 2AG form factor (5mm x 15mm axial). This component is classified as obsolete, making substitute parts necessary for ongoing system maintenance and new designs. The active equivalent 3JQ 1.5-R provides functional continuity with improved compliance status.

Substiute Parts

3JQ 1.5

Bel Fuse Inc.In Stock: 11463JQ 1.5 Datasheet

Current PartRFQ

3JQ 1.5-R

Bel Fuse Inc.In Stock: 11343JQ 1.5-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 3JQ 1.5 is determined by strict equivalence across the following critical parameters:

• Current Rating: 1.5 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: 1.4 (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

The 3JQ 1.5-R meets all substitution criteria and is the direct equivalent for this obsolete part.

Parameter Comparison

Engineering Selection Recommendations

The 3JQ 1.5-R is the direct functional equivalent to the obsolete 3JQ 1.5. Both parts share identical electrical and mechanical specifications across all critical parameters. The 3JQ 1.5-R offers the advantage of active product status and ROHS3 compliance, making it the appropriate selection for new designs and ongoing system support. The DC cold resistance differential (0.058 Ohms versus 0.056 Ohms) is within acceptable tolerance for fuse applications and does not affect substitution validity.

Frequently Asked Questions (FAQ)

Q: Can the 3JQ 1.5-R be used as a direct replacement for the 3JQ 1.5?

A: Yes. The 3JQ 1.5-R is electrically and mechanically equivalent to the 3JQ 1.5 across all specified parameters, including current rating, voltage ratings, fuse type, response time, package form factor, and breaking capacity.

Q: What is the difference between the 3JQ 1.5 and 3JQ 1.5-R?

A: The primary differences are product status and compliance. The 3JQ 1.5 is obsolete and RoHS non-compliant, while the 3JQ 1.5-R is active and ROHS3 compliant. The DC cold resistance values differ slightly (0.058 Ohms versus 0.056 Ohms), which is within acceptable tolerance for fuse applications.

Q: Are there any packaging differences between these parts?

A: The 3JQ 1.5 is supplied in standard packaging, while the 3JQ 1.5-R is supplied in bulk packaging. Both parts use the identical 2AG, 5mm x 15mm (Axial) form factor and are mounted through-hole.

Q: What certifications apply to the 3JQ 1.5-R?

A: The 3JQ 1.5-R carries CE, CSA, and cURus approvals. The original 3JQ 1.5 also included PSE certification, which is not listed for the substitute part.

Q: Is the 3JQ 1.5-R suitable for both AC and DC applications?

A: Yes. The 3JQ 1.5-R is rated for 350 V AC and 140 V DC operation, matching the specifications of the original 3JQ 1.5.