2JS 1.5 Equivalent & Substitute Parts

Part Overview

The 2JS 1.5 is a 1.5 A slow-blow glass cartridge fuse rated for 350 V AC and 140 V DC operation. This component is classified as obsolete, requiring identification of active equivalent parts for continued system support and procurement. The 2AG form factor (5mm x 15mm) and slow-blow response characteristic define the functional requirements for direct substitution.

Substiute Parts

2JS 1.5

Bel Fuse Inc.In Stock: 11672JS 1.5 Datasheet

Current PartRFQ

2JS 1.5-R

Bel Fuse Inc.In Stock: 29982JS 1.5-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Direct substitution of the 2JS 1.5 is determined by 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: Slow Blow (exact match required)
• Package / Case: 2AG, 5mm x 15mm (exact match required)
• Breaking Capacity: 100A AC, 150A DC (exact match required)
• Melting I²t: 14.5 (exact match required)

The 2JS 1.5-R meets all substitution criteria as an active equivalent part manufactured by Bel Fuse Inc. under the same series designation.

Parameter Comparison

Engineering Selection Recommendations

The 2JS 1.5-R is the direct active equivalent for the obsolete 2JS 1.5. Both parts maintain identical electrical and mechanical specifications across all critical parameters. The 2JS 1.5-R offers improved compliance status: ROHS3 certification versus non-compliance in the original part, and cURus certification addition to the approval agency list. The DC cold resistance differential (0.096 Ohms versus 0.135 Ohms) represents a minor improvement in the active equivalent. Selection of the 2JS 1.5-R is appropriate for all applications previously specified for the 2JS 1.5.

Frequently Asked Questions (FAQ)

Q: Can the 2JS 1.5-R be used as a direct replacement for the 2JS 1.5?

A: Yes. The 2JS 1.5-R is electrically and mechanically equivalent across all specified parameters, including current rating, voltage ratings, fuse type, response time, package dimensions, breaking capacity, and melting I²t value.

Q: What is the primary difference between these two parts?

A: The 2JS 1.5 is obsolete, while the 2JS 1.5-R is active. The 2JS 1.5-R includes ROHS3 compliance and cURus certification, with a lower DC cold resistance value.

Q: Are there any compatibility concerns with the 2AG holder?

A: No. Both parts use the identical 2AG form factor (5mm x 15mm) and require the same holder type.

Q: What certifications apply to the 2JS 1.5-R?

A: The 2JS 1.5-R carries CE, CSA, cURus, and PSE approvals, with ROHS3 compliance and REACH unaffected status.

Q: Is the DC cold resistance difference significant for circuit design?

A: The DC cold resistance values (0.135 Ohms versus 0.096 Ohms) are minor variations within the same component class and do not affect substitution suitability for standard fuse holder applications.