Equivalent & Substitute Parts for 5TT1.5

Part Overview

The 5TT1.5 is a 1.5 A, 250 V AC/DC slow-blow glass cartridge fuse manufactured by Bel Fuse Inc. in a 5mm x 20mm package format. This fuse is designed for applications requiring overcurrent protection with delayed response characteristics and is rated for breaking capacity of 100 A at rated voltage.

The 5TT1.5 is classified as obsolete. Locating active equivalent components is necessary to ensure continued availability, supply chain reliability, and access to current manufacturing certifications and compliance standards.

Substiute Parts

5TT1.5

Bel Fuse Inc.In Stock: 10955TT1.5 Datasheet

Current PartRFQ

5TT 1.5-R

Bel Fuse Inc.In Stock: 244285TT 1.5-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5TT1.5 is determined by strict equivalence across the following electrical and mechanical parameters:

• Current Rating: 1.5 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Response Time: Slow Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 100 A (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

The substitute part 5TT 1.5-R meets all these criteria and is manufactured by the same supplier, Bel Fuse Inc., ensuring mechanical and electrical compatibility with applications originally designed for the 5TT1.5.

Parameter Comparison

Engineering Selection Recommendations

The 5TT 1.5-R is the direct active equivalent for the obsolete 5TT1.5. Both parts are electrically and mechanically identical across all specified parameters, including current rating, voltage rating, fuse type, package dimensions, response time, and breaking capacity.

The 5TT 1.5-R offers improved compliance status: it is ROHS3 compliant, whereas the 5TT1.5 is RoHS non-compliant. Both parts maintain equivalent approval agency certifications (CE, CSA, PSE, UL/cULus), ensuring regulatory acceptance in equivalent application contexts.

The 5TT 1.5-R is currently in active production with substantial inventory availability (24,323 pcs), compared to the obsolete status of the 5TT1.5. This ensures long-term supply chain continuity and access to current manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can the 5TT 1.5-R be used as a direct replacement for the 5TT1.5?

A: Yes. The 5TT 1.5-R is electrically and mechanically equivalent to the 5TT1.5 across all critical parameters: 1.5 A current rating, 250 V AC voltage rating, slow-blow response, 5mm x 20mm package, and 100 A breaking capacity. Both require the same holder for installation.

Q: What is the difference between the 5TT1.5 and 5TT 1.5-R?

A: The primary differences are product status and compliance. The 5TT1.5 is obsolete and RoHS non-compliant. The 5TT 1.5-R is active production and ROHS3 compliant. Electrical and mechanical specifications are identical.

Q: Are there any compatibility concerns when substituting the 5TT 1.5-R for the 5TT1.5?

A: No compatibility concerns exist. Both parts use identical 5mm x 20mm cartridge fuse holders and are rated for the same electrical parameters. Direct substitution is appropriate for all applications.

Q: What certifications does the 5TT 1.5-R carry?

A: The 5TT 1.5-R carries CE, CSA, cULus, and PSE approvals, meeting international safety and regulatory standards equivalent to the original 5TT1.5.

Q: Is the 5TT 1.5-R available in different packaging options?

A: The 5TT 1.5-R is supplied in bulk packaging. The 5TT1.5 packaging specification was not provided in the available data.