Littelfuse 0218.080MXEP Equivalent & Substitute Parts

Part Overview

The Littelfuse 0218.080MXEP is an 80 mA, 250 V AC/DC slow blow glass cartridge fuse with a 5mm x 20mm axial form factor. This component is designed for circuit protection in applications requiring controlled response time characteristics. The part maintains active product status with full compliance to international safety standards including UL, CE, CSA, and VDE certifications. Substitute parts are identified when equivalent electrical and mechanical parameters are required for design flexibility, inventory management, or supply chain optimization.

Substiute Parts

0218.080MXEP

Littelfuse Inc.In Stock: 10080218.080MXEP Datasheet

Current PartRFQ

5STP 80-R

Bel Fuse Inc.In Stock: 20585STP 80-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bel Fuse Inc. 5STP 80-R qualifies as a direct substitute based on the following critical parameters:

Current Rating: Both parts are rated at 80 mA, ensuring identical load protection characteristics.

Voltage Rating: Both parts are rated at 250 V AC, maintaining equivalent circuit protection capability.

Response Time: Both parts feature slow blow characteristics, providing identical inrush current tolerance.

Package / Case: Both parts use the 5mm x 20mm axial form factor, ensuring mechanical compatibility in existing PCB layouts and fuse holders.

Fuse Type: Both are glass cartridge fuses, maintaining identical construction and performance profile.

Mounting Type: Both are through hole components, compatible with standard fuse holder installations.

Breaking Capacity: Both parts are rated at 35 A breaking capacity at rated voltage.

Operating Temperature: Both parts operate across the -55°C to 125°C range, ensuring thermal compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 0218.080MXEP and Bel Fuse 5STP 80-R maintain active product status and carry comprehensive international safety certifications. The Littelfuse part includes K-MARK approval, while the Bel Fuse part includes cULus and IMQ certifications. Both parts satisfy UL, CE, CSA, SEMKO, and VDE requirements. Selection between these parts should be based on supply availability, lead time requirements, and specific certification needs for the target application. Both parts are RoHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the Bel Fuse 5STP 80-R be used as a direct replacement for the Littelfuse 0218.080MXEP?

A: Yes. Both parts share identical electrical ratings (80 mA, 250 V AC), response characteristics (slow blow), and mechanical form factor (5mm x 20mm axial). Both are glass cartridge fuses with through hole mounting and 35 A breaking capacity.

Q: Are there differences in physical dimensions between these parts?

A: Minor dimensional variations exist. The Littelfuse part measures 0.236" diameter x 0.886" length (6.00mm x 22.50mm), while the Bel Fuse part measures 0.217" diameter x 0.827" length (5.50mm x 21.00mm). Both fit standard 5mm x 20mm fuse holders designed for axial cartridge fuses.

Q: Do both parts have the same DC cold resistance?

A: No. The Littelfuse 0218.080MXEP has 12.6 Ohms DC cold resistance, while the Bel Fuse 5STP 80-R has 15.7 Ohms. This difference does not affect substitutability for circuit protection applications.

Q: What is the melting I²t difference between these parts?

A: The Littelfuse part has a melting I²t of 0.0258, while the Bel Fuse part has 0.015. Both values fall within acceptable ranges for 80 mA slow blow fuses and do not prevent substitution.

Q: Are certification requirements identical?

A: Both parts carry UL, CE, CSA, SEMKO, and VDE certifications. The Littelfuse part includes K-MARK approval, while the Bel Fuse part includes cULus and IMQ certifications. Verify specific certification requirements for your target market before selection.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, for circuit protection function. Verify fuse holder compatibility with the specific physical dimensions of the selected part, particularly if the design has tight mechanical tolerances.