5SFP 2 Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The 5SFP 2 is a 2A 250VAC fast-blow 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 design support and component sourcing. Substitute parts maintain the same electrical ratings and mechanical compatibility while offering active product status and improved compliance certifications.

Substiute Parts

5SFP 2

Bel Fuse Inc.In Stock: 7675SFP 2 Datasheet

Current PartRFQ

5SFP 2-R

Bel Fuse Inc.In Stock: 20765SFP 2-R Datasheet

DirectRFQ

5MFP 2-R

Bel Fuse Inc.In Stock: 27435MFP 2-R Datasheet

Parametric EquivalentRFQ

0034.1519.PT

SCHURTER Inc.In Stock: 41640034.1519.PT Datasheet

DirectRFQ

0217002.MXEP

Littelfuse Inc.In Stock: 22060217002.MXEP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 5SFP 2 is determined by strict equivalence in the following parameters:

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

All substitute parts listed maintain these core electrical and mechanical parameters. Variations in breaking capacity, melting I²t, DC cold resistance, and approval agencies are permitted within the substitution relationship, as these do not affect basic functional compatibility in standard circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

5SFP 2-R (Bel Fuse Inc.) is the primary direct substitute. It maintains identical electrical and mechanical specifications to the 5SFP 2 while offering active product status and ROHS3 compliance. This part is recommended for direct replacement in existing designs without circuit modification.

5MFP 2-R (Bel Fuse Inc.) is a parametric equivalent offering higher breaking capacity (200A vs. 35A) and lower melting I²t (4.4 vs. 6.4). This part is suitable for applications requiring enhanced fault current handling while maintaining the same current and voltage ratings.

0034.1519.PT (SCHURTER Inc., FSF 5x20 series) provides functional equivalence with cURus certification. Dimensional variation exists (5.40mm x 22.50mm vs. 5.50mm x 21.00mm), requiring mechanical fit verification in constrained mounting environments.

0217002.MXEP (Littelfuse Inc., 217 series) offers the broadest approval agency coverage (BSI, CE, CCC, CSA, KC, PSE, SEMKO, UR, VDE) and is suitable for international applications. Dimensional variation exists (5.80mm x 22.50mm), requiring mechanical fit verification.

All substitute parts are ROHS3 compliant and REACH unaffected, addressing regulatory requirements not met by the obsolete 5SFP 2.

Frequently Asked Questions (FAQ)

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

A: Yes. The 5SFP 2-R maintains identical current rating (2A), voltage rating (250VAC), fuse type (cartridge glass), response time (fast blow), package dimensions (5mm x 20mm), and mounting type (through hole). No circuit modifications are required.

Q: What is the difference between the 5SFP 2-R and 5MFP 2-R?

A: Both maintain the same 2A 250VAC ratings and fast-blow response. The 5MFP 2-R offers higher breaking capacity (200A vs. 35A) and lower melting I²t (4.4 vs. 6.4), providing enhanced protection in high fault-current environments. Selection depends on circuit fault current requirements.

Q: Are there dimensional differences between substitute parts?

A: Yes. The 5SFP 2-R matches the original 5.50mm x 21.00mm dimensions. The 0034.1519.PT measures 5.40mm x 22.50mm, and the 0217002.MXEP measures 5.80mm x 22.50mm. Mechanical fit verification is required for applications with tight mounting constraints.

Q: Which substitute part has the broadest international certification coverage?

A: The 0217002.MXEP (Littelfuse 217 series) carries certifications from BSI, CE, CCC, CSA, KC, PSE, SEMKO, UR, and VDE, making it suitable for global applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed (5SFP 2-R, 5MFP 2-R, 0034.1519.PT, 0217002.MXEP) are ROHS3 compliant, whereas the original 5SFP 2 is RoHS non-compliant.

Q: What is the significance of melting I²t variation among substitute parts?

A: Melting I²t indicates the thermal energy required to melt the fuse element. Lower values (5MFP 2-R at 4.4) provide faster response to overcurrent conditions. Higher values (5SFP 2 at 6.4) allow greater transient tolerance. Selection depends on circuit protection requirements and acceptable response time.