5SFP 100 Equivalent & Substitute Parts

Part Overview

The 5SFP 100 is a fast-blow glass cartridge fuse rated at 100 mA, 250 V AC/DC, with a 5mm x 20mm axial package. Manufactured by Bel Fuse Inc., this component is classified as obsolete. Due to its obsolete status and limited ongoing availability from the original manufacturer, identifying equivalent substitute parts is essential for system maintenance, repair, and new design implementations where this fuse specification is required.

Substiute Parts

5SFP 100

Bel Fuse Inc.In Stock: 7605SFP 100 Datasheet

Current PartRFQ

0217.100MXEP

Littelfuse Inc.In Stock: 11530217.100MXEP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5SFP 100 are identified based on strict electrical and mechanical compatibility criteria. The following parameters must match or be equivalent:

• Current Rating: 100 mA (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Breaking Capacity @ Rated Voltage: 35 A (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match or wider range acceptable)

The 0217.100MXEP from Littelfuse Inc. meets all these criteria and is therefore a direct electrical and mechanical substitute.

Parameter Comparison

Engineering Selection Recommendations

The 0217.100MXEP from Littelfuse Inc. is the direct substitute for the 5SFP 100. Selection of this substitute is supported by the following factors:

• All critical electrical parameters match exactly: 100 mA current rating, 250 V AC voltage rating, 35 A breaking capacity, and fast-blow response time.
• Mechanical compatibility is confirmed: identical 5mm x 20mm axial package and through-hole mounting.
• The substitute part is in active production status, ensuring ongoing availability and supply chain reliability.
• The 0217.100MXEP carries broader regulatory approvals including CCC and K-MARK certifications in addition to the CE, CSA, SEMKO, UL, and VDE certifications present on the original part.
• RoHS3 compliance of the substitute part aligns with current environmental and regulatory requirements.
• Minor variations in melting I²t (0.0045 vs. 0.005) and DC cold resistance (5.6965 vs. 4.9 Ohms) remain within acceptable engineering tolerances for this fuse category and do not affect functional substitution.

Frequently Asked Questions (FAQ)

Q: Can the 0217.100MXEP be used as a direct replacement for the 5SFP 100 in existing designs?

A: Yes. The 0217.100MXEP meets all electrical and mechanical requirements for direct substitution. Both parts share identical current rating, voltage rating, fuse type, response time, package dimensions, and breaking capacity.

Q: What are the physical dimension differences between these parts?

A: The 5SFP 100 has dimensions of 0.217" Dia x 0.827" L (5.50mm x 21.00mm). The 0217.100MXEP has dimensions of 0.236" Dia x 0.886" L (6.00mm x 22.50mm). These minor dimensional variations remain within the tolerance envelope for 5mm x 20mm axial cartridge fuses and do not prevent mechanical compatibility in standard through-hole fuse holders.

Q: Are there compliance differences between the original and substitute part?

A: The 0217.100MXEP carries additional certifications (CCC, K-MARK) and is RoHS3 compliant, whereas the 5SFP 100 is RoHS non-compliant. Both parts maintain CE, CSA, SEMKO, UL, and VDE approvals. For applications requiring RoHS compliance, the 0217.100MXEP is the preferred choice.

Q: How do the electrical characteristics compare?

A: The melting I²t of the 0217.100MXEP (0.0045) is slightly lower than the 5SFP 100 (0.005), and the DC cold resistance is slightly higher (5.6965 Ohms vs. 4.9 Ohms). These differences are minor and do not affect the functional performance or safety characteristics of the fuse in its intended application.

Q: Is the 0217.100MXEP available in the same packaging format?

A: The 0217.100MXEP is supplied in bulk packaging, whereas the 5SFP 100 was supplied in standard packaging. Both parts use the same 5mm x 20mm axial cartridge format suitable for through-hole mounting.