Equivalent & Substitute Parts for 5TT 6 Ceramic Fuse

Part Overview

The 5TT 6 is a ceramic cartridge fuse manufactured by Bel Fuse Inc., rated for 6 A at 125 V AC/DC with a slow-blow response characteristic. This component is designed for applications requiring overcurrent protection in a compact 5mm x 20mm form factor. The main part (5TT 6) carries an obsolete product status, making identification of active equivalent parts essential for procurement and design continuity.

Substiute Parts

5TT 6

Bel Fuse Inc.In Stock: 11135TT 6 Datasheet

Current PartRFQ

5TT 6-R

Bel Fuse Inc.In Stock: 75935TT 6-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5TT 6 ceramic fuse is determined by strict equivalence across the following critical parameters:

• Current Rating: 6 A (exact match required)
• Voltage Rating: 125 V AC (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Response Time: Slow Blow (exact match required)
• Breaking Capacity: 10 kA (exact match required)
• Melting I²t: 218 (exact match required)

The 5TT 6-R substitute part maintains identical electrical and mechanical specifications while offering improved product status and compliance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 5TT 6-R is the direct active equivalent for the obsolete 5TT 6 ceramic fuse. Both parts are manufactured by Bel Fuse Inc. and maintain identical electrical and mechanical specifications across all critical parameters. The 5TT 6-R offers the advantage of active product status with improved RoHS3 compliance, making it the appropriate selection for new designs and component replacement in existing applications. Both parts carry equivalent regulatory approvals (CE, CSA, PSE) and are suitable for the same circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can the 5TT 6-R directly replace the 5TT 6 in existing applications?

A: Yes. The 5TT 6-R maintains identical current rating (6 A), voltage rating (125 V AC), fuse type (Cartridge, Ceramic), package dimensions (5mm x 20mm), response time (Slow Blow), breaking capacity (10 kA), and melting I²t (218). Both parts require the same holder and are mechanically and electrically interchangeable.

Q: What is the difference between the 5TT 6 and 5TT 6-R?

A: The primary differences are product status and compliance. The 5TT 6 is obsolete and RoHS non-compliant, while the 5TT 6-R is an active product with ROHS3 compliance. All electrical and mechanical parameters remain identical.

Q: Are there any packaging differences between these parts?

A: The 5TT 6 and 5TT 6-R both use the 5mm x 20mm ceramic cartridge package. The 5TT 6-R is supplied in bulk packaging, while the original part number may have different packaging options. Both require a compatible fuse holder for installation.

Q: Do both parts carry the same regulatory approvals?

A: Yes. Both the 5TT 6 and 5TT 6-R carry CE, CSA, and PSE approvals, confirming compliance with international safety standards for overcurrent protection devices.

Q: Why should I use the 5TT 6-R instead of the 5TT 6?

A: The 5TT 6-R is the recommended choice because it maintains active product status with current manufacturing support and improved RoHS3 compliance. The 5TT 6 is obsolete and may face supply constraints.