5STP 5 Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The 5STP 5 is a 5 A, 250 V AC/DC slow blow glass cartridge fuse manufactured by Bel Fuse Inc. in a 5mm x 20mm axial through-hole package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The fuse is designed for general-purpose circuit protection applications requiring slow blow response characteristics.

Substiute Parts

5STP 5

Bel Fuse Inc.In Stock: 11025STP 5 Datasheet

Current PartRFQ

5STP 5-R

Bel Fuse Inc.In Stock: 57525STP 5-R Datasheet

DirectRFQ

5ETP 5-R

Bel Fuse Inc.In Stock: 22855ETP 5-R Datasheet

Parametric EquivalentRFQ

0218005.MXEP

Littelfuse Inc.In Stock: 48640218005.MXEP Datasheet

SimilarRFQ

TSC-P-5A

OptiFuseIn Stock: 27027TSC-P-5A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters:

• Current Rating: 5 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)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (minimum requirement)

All substitute parts listed meet these core electrical and mechanical criteria. Variations in breaking capacity, melting I²t, physical dimensions within tolerance, and DC cold resistance do not preclude substitution when the primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

5STP 5-R (Bel Fuse Inc.) — Direct manufacturer replacement with identical electrical and mechanical specifications. Active product status with ROHS3 compliance. Recommended as the primary substitute for the obsolete 5STP 5.

5ETP 5-R (Bel Fuse Inc.) — Parametric equivalent with higher breaking capacity (150 A vs. 50 A) and elevated melting I²t (444 vs. 95). Maintains all core electrical parameters and operating temperature range. Active product status with ROHS3 compliance. Suitable where enhanced breaking capacity is acceptable.

0218005.MXEP (Littelfuse Inc.) — Cross-manufacturer substitute with identical current, voltage, and response characteristics. Physical dimensions vary slightly (5.80mm x 22.50mm vs. 5.50mm x 21.00mm). Active product status with ROHS3 compliance and expanded certification scope. Verify mechanical fit in existing PCB layouts before implementation.

TSC-P-5A (OptiFuse) — Parametric equivalent with highest breaking capacity (200 A) and lowest melting I²t (46.97). All core electrical parameters match. Active product status with ROHS3 compliance. Suitable for applications requiring superior breaking performance.

Frequently Asked Questions (FAQ)

Q: Can the 5STP 5-R directly replace the obsolete 5STP 5?

A: Yes. The 5STP 5-R is the direct manufacturer equivalent with identical current rating, voltage rating, fuse type, response time, package dimensions, and operating temperature range. It is the recommended primary substitute.

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

A: Both are Bel Fuse Inc. products with identical core electrical specifications (5 A, 250 V, slow blow). The 5ETP 5-R has a higher breaking capacity (150 A vs. 50 A) and higher melting I²t (444 vs. 95). Selection depends on application requirements for breaking performance.

Q: Can I use the Littelfuse 0218005.MXEP as a substitute?

A: Yes, the 0218005.MXEP meets all core electrical and functional requirements. However, its physical dimensions are slightly larger (5.80mm x 22.50mm vs. 5.50mm x 21.00mm). Verify that the fuse holder and PCB layout accommodate the larger cartridge before implementation.

Q: What does "slow blow" response time mean?

A: Slow blow fuses tolerate temporary inrush currents without opening. They open only when sustained overcurrent conditions occur. All listed substitutes maintain this characteristic, making them suitable for circuits with inrush current requirements.

Q: Are all substitute parts RoHS compliant?

A: The original 5STP 5 is RoHS non-compliant. All four substitute parts (5STP 5-R, 5ETP 5-R, 0218005.MXEP, and TSC-P-5A) are ROHS3 compliant, meeting current environmental regulations.

Q: Which substitute has the highest breaking capacity?

A: The TSC-P-5A (OptiFuse) has the highest breaking capacity at 200 A, compared to 50 A for the 5STP 5-R and 0218005.MXEP, and 150 A for the 5ETP 5-R.

Q: Can I mix different substitute parts in the same circuit?

A: All substitutes meet the core electrical specifications for the 5STP 5. However, for consistency and simplified inventory management, use a single substitute part number throughout a design or system.