5ETP 8-R Equivalent & Substitute Parts

Part Overview

The 5ETP 8-R is an 8A 250VAC slow-blow glass cartridge fuse in 5mm x 20mm axial package format, manufactured by Bel Fuse Inc. This through-hole component is designed for circuit protection applications requiring moderate current ratings with delayed response characteristics. The part maintains active product status with 1669 units in current inventory. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter range.

Substiute Parts

5ETP 8-R

Bel Fuse Inc.In Stock: 17015ETP 8-R Datasheet

Current PartRFQ

5STP 8-R

Bel Fuse Inc.In Stock: 19425STP 8-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5ETP 8-R is determined by strict equivalence across the following critical parameters:

• Current Rating: 8 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 5STP 8-R meets all substitution criteria as a parametric equivalent within the allowed electrical and mechanical specifications for this product category.

Parameter Comparison

Engineering Selection Recommendations

Both the 5ETP 8-R and 5STP 8-R are active products manufactured by Bel Fuse Inc. with ROHS3 compliance. The 5ETP 8-R carries CE and SEMKO certifications with a breaking capacity of 150A. The 5STP 8-R carries CE, CSA, and cULus certifications with a breaking capacity of 80A. Selection between these parts should be based on the specific regulatory requirements and breaking capacity specifications of the target application. Both parts are electrically and mechanically equivalent for standard 8A 250VAC slow-blow cartridge fuse applications.

Frequently Asked Questions (FAQ)

Q: Can the 5STP 8-R be used as a direct replacement for the 5ETP 8-R?

A: The 5STP 8-R is a parametric equivalent meeting all critical electrical and mechanical specifications: 8A current rating, 250V AC voltage rating, slow-blow response, and 5mm x 20mm axial package. However, the breaking capacity differs (80A vs. 150A) and certifications vary (CE, CSA, cULus vs. CE, SEMKO). Application requirements must determine suitability.

Q: What are the key parameters that define substitution eligibility?

A: Substitution eligibility is determined by exact equivalence in current rating (8A), voltage rating (250V AC), fuse type (cartridge glass), response time (slow blow), package dimensions (5mm x 20mm axial), mounting type (through hole), and operating temperature range (-55°C to 125°C).

Q: Are there differences in performance characteristics between these parts?

A: The DC cold resistance differs slightly (0.007 Ohms vs. 0.006 Ohms), melting I²t values differ (252 vs. 260), and breaking capacity at rated voltage differs (150A vs. 80A). These variations should be evaluated against specific circuit protection requirements.

Q: What certifications apply to each part?

A: The 5ETP 8-R holds CE and SEMKO certifications. The 5STP 8-R holds CE, CSA, and cULus certifications. Application regulatory requirements should guide certification selection.

Q: Are both parts currently available?

A: Both parts maintain active product status with current inventory: 5ETP 8-R has 1669 units in stock, and 5STP 8-R has 1879 units in stock.