5ETP 2-R Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The 5ETP 2-R is a 2 A, 250 V AC/DC slow-blow glass cartridge fuse manufactured by Bel Fuse Inc. in a 5mm x 20mm through-hole package. This component is Active status and widely used in circuit protection applications requiring slow-blow response characteristics. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, and functional performance parameters to ensure direct interchangeability in circuit protection designs.

Substiute Parts

5ETP 2-R

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

Current PartRFQ

5STP 2-R

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

Parametric EquivalentRFQ

5TTP 2-R

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

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5ETP 2-R are qualified based on the following mandatory parameters:

• Current Rating: 2 A (exact match required)
• Voltage Rating (AC): 250 V (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)

The following parts meet all mandatory substitution criteria:

• 5STP 2-R (Bel Fuse Inc.)
• 5TTP 2-R (Bel Fuse Inc.)

Parameter Comparison

Engineering Selection Recommendations

All three parts (5ETP 2-R, 5STP 2-R, and 5TTP 2-R) are Active status products manufactured by Bel Fuse Inc. and are ROHS3 compliant. Selection between these parts should be based on application-specific requirements for breaking capacity and melting I²t characteristics:

• 5ETP 2-R: Breaking capacity 150A, melting I²t 92. Certifications: CCC, CE, CSA, cULus, SEMKO, VDE.
• 5STP 2-R: Breaking capacity 35A, melting I²t 12. Certifications: CCC, CE, CSA, cURus, IMQ, SEMKO, VDE.
• 5TTP 2-R: Breaking capacity 100A, melting I²t 29.9. Certifications: CE, CSA, cULus, PSE.

All parts share identical electrical ratings (2 A, 250 V AC), fuse type (cartridge glass), response time (slow blow), and mechanical dimensions (5mm x 20mm through-hole). Differences in breaking capacity and melting I²t reflect design variations within the same functional category. Certification coverage varies; verify that the selected part meets all required regulatory approvals for the target application.

Frequently Asked Questions (FAQ)

Q: Can 5STP 2-R, 5TTP 2-R, and 5ETP 2-R be used interchangeably?

A: Yes, these parts are mechanically and electrically interchangeable in applications requiring a 2 A, 250 V AC/DC slow-blow glass cartridge fuse in a 5mm x 20mm through-hole package. However, differences in breaking capacity (35A, 100A, and 150A respectively) and melting I²t values may affect performance in circuits with specific fault current profiles. Verify that the selected part's breaking capacity and melting I²t are appropriate for the application's maximum fault current and thermal requirements.

Q: What is the significance of breaking capacity differences?

A: Breaking capacity indicates the maximum fault current the fuse can safely interrupt without rupturing or creating a hazard. The 5ETP 2-R (150A), 5TTP 2-R (100A), and 5STP 2-R (35A) have different breaking capacities. Select a part with breaking capacity equal to or greater than the maximum prospective fault current in the circuit.

Q: Are all three parts certified for the same regulatory standards?

A: No. The 5ETP 2-R carries CCC, CE, CSA, cULus, SEMKO, and VDE certifications. The 5STP 2-R carries CCC, CE, CSA, cURus, IMQ, SEMKO, and VDE certifications. The 5TTP 2-R carries CE, CSA, cULus, and PSE certifications. Verify that the selected part meets all required certifications for your target market and application.

Q: Do these parts have identical physical dimensions?

A: Yes. All three parts are 0.217" diameter x 0.827" length (5.50mm x 21.00mm) and mount through-hole in 5mm x 20mm package footprints. They are mechanically interchangeable in PCB designs.

Q: What is the difference in DC cold resistance between these parts?

A: The 5ETP 2-R has 0.043 Ohms, the 5STP 2-R has 0.03 Ohms, and the 5TTP 2-R has 0.08 Ohms. These minor variations reflect internal construction differences but do not affect functional interchangeability for standard circuit protection applications.