5TTP 2 Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The 5TTP 2 is a 2A 250VAC glass cartridge fuse manufactured by Bel Fuse Inc., designed for through-hole mounting in 5mm x 20mm form factor applications. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The 5TTP 2 series provides slow-blow response characteristics suitable for circuits requiring transient current tolerance before fuse operation.

Substiute Parts

5TTP 2

Bel Fuse Inc.In Stock: 10205TTP 2 Datasheet

Current PartRFQ

5TTP 2-R

Bel Fuse Inc.In Stock: 16495TTP 2-R Datasheet

DirectRFQ

5ETP 2-R

Bel Fuse Inc.In Stock: 17165ETP 2-R Datasheet

Parametric EquivalentRFQ

5STP 2-R

Bel Fuse Inc.In Stock: 33505STP 2-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 5TTP 2 is determined by strict equivalence across the following critical parameters:

• Current Rating: 2 A (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 5mm x 20mm (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

All substitute parts listed below meet these mandatory criteria. Variations in secondary parameters such as breaking capacity, melting I²t, DC cold resistance, and approval agencies do not preclude substitution when the primary electrical and mechanical specifications are identical.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the obsolete 5TTP 2, the following selection criteria apply:

5TTP 2-R is the direct manufacturer replacement, maintaining identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. This part is the primary choice for direct substitution in existing designs.

5ETP 2-R provides parametric equivalence with enhanced breaking capacity (150A versus 100A) and higher melting I²t (92 versus 30). This part is suitable for applications where increased fault current handling capability is beneficial or required.

5STP 2-R provides parametric equivalence with reduced breaking capacity (35A versus 100A) and lower melting I²t (12 versus 30). This part is suitable for applications with lower fault current environments or where reduced breaking capacity is acceptable.

All three substitute parts carry active product status and ROHS3 compliance, distinguishing them from the obsolete 5TTP 2. Selection between these options depends on the specific breaking capacity and melting I²t requirements of the target application circuit.

Frequently Asked Questions (FAQ)

Q: Can 5TTP 2-R be used as a direct replacement for 5TTP 2?

A: Yes. The 5TTP 2-R maintains identical current rating (2A), voltage rating (250V AC), fuse type (cartridge glass), response time (slow blow), package dimensions (5mm x 20mm), and mounting type (through hole). The primary difference is product status (active versus obsolete) and RoHS compliance.

Q: What is the difference between 5ETP 2-R and 5STP 2-R when substituting for 5TTP 2?

A: Both 5ETP 2-R and 5STP 2-R meet all primary electrical and mechanical substitution criteria. The differences lie in breaking capacity and melting I²t. The 5ETP 2-R offers 150A breaking capacity and 92 melting I²t, while 5STP 2-R offers 35A breaking capacity and 12 melting I²t. Selection depends on the circuit's fault current environment.

Q: Are all substitute parts physically compatible with existing 5TTP 2 footprints?

A: Yes. All substitute parts share identical package dimensions (5mm x 20mm axial) and through-hole mounting type, ensuring mechanical compatibility with existing PCB designs and fuse holders.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance status does not alter the electrical performance or substitution eligibility of these fuse parts. It reflects manufacturing process compliance with environmental regulations.

Q: Can 5TTP 2 be used in new designs?

A: The 5TTP 2 is classified as obsolete. For new designs, use 5TTP 2-R, 5ETP 2-R, or 5STP 2-R based on the specific breaking capacity and melting I²t requirements of the application.