5TT 5 Equivalent & Substitute Parts

Part Overview

The 5TT 5 is a 5A 125VAC glass cartridge fuse manufactured by Bel Fuse Inc., designed for use in applications requiring slow-blow fuse protection in a 5mm x 20mm form factor. This part is classified as obsolete, which necessitates identification of active equivalent components to maintain supply chain continuity and ensure long-term availability for replacement and new designs.

Substiute Parts

5TT 5

Bel Fuse Inc.In Stock: 6825TT 5 Datasheet

Current PartRFQ

5TT 5-R

Bel Fuse Inc.In Stock: 398595TT 5-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 5TT 5-R qualifies as a direct substitute for the 5TT 5 based on identical electrical and mechanical parameters. Substitution is determined by matching the following critical parameters:

• Current Rating: 5 A
• Voltage Rating (AC): 125 V
• Fuse Type: Cartridge, Glass
• Response Time: Slow Blow
• Package / Case: 5mm x 20mm
• Breaking Capacity @ Rated Voltage: 10kA
• Melting I²t: 157
• Operating Temperature Range: -55°C ~ 125°C
• DC Cold Resistance: 0.02 Ohms
• Approval Agencies: CE, CSA, PSE

The 5TT 5-R maintains full electrical and mechanical compatibility with the original 5TT 5 specification.

Parameter Comparison

Engineering Selection Recommendations

The 5TT 5-R is the direct equivalent for the obsolete 5TT 5. Both components are manufactured by Bel Fuse Inc. and share identical electrical and mechanical specifications. The 5TT 5-R is currently in active production with high inventory availability (39,769 pcs), ensuring reliable supply for both replacement and new design applications.

The 5TT 5-R provides improved compliance status, meeting ROHS3 requirements compared to the non-compliant 5TT 5. Both parts maintain CE, CSA, and PSE certifications, confirming regulatory approval for their intended applications.

Frequently Asked Questions (FAQ)

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

A: Yes. The 5TT 5-R is electrically and mechanically identical to the 5TT 5. All critical parameters including current rating, voltage rating, fuse type, response time, package dimensions, breaking capacity, and thermal characteristics are matched.

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

A: The primary differences are product status and RoHS compliance. The 5TT 5 is obsolete and RoHS non-compliant, while the 5TT 5-R is active production and ROHS3 compliant. Electrical and mechanical performance are identical.

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

A: No compatibility concerns exist. Both parts use the same 5mm x 20mm cartridge form factor and require the same holder. They are functionally interchangeable in all applications.

Q: What certifications do these fuses carry?

A: Both the 5TT 5 and 5TT 5-R carry CE, CSA, and PSE approvals, confirming compliance with international safety standards.

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

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