Littelfuse 0977005.MXEP Equivalent & Substitute Parts

Part Overview

The Littelfuse 0977005.MXEP is a 5 A ceramic cartridge fuse rated for 500 V AC and 450 V DC operation in a 5mm x 20mm through-hole package. This slow-blow fuse is designed for circuit protection in industrial and electronic applications requiring reliable overcurrent interruption. The part maintains active product status with full RoHS3 compliance and international approvals including CE, PSE, and SEMKO certification. Substitute parts are identified when equivalent current ratings, package dimensions, and response characteristics are maintained while meeting or exceeding voltage specifications.

Substiute Parts

0977005.MXEP

Littelfuse Inc.In Stock: 17460977005.MXEP Datasheet

Current PartRFQ

0ADKP5000-RE

Bel Fuse Inc.In Stock: 18660ADKP5000-RE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0977005.MXEP is determined by the following critical parameters:

• Current Rating: Must be 5 A
• Package Dimensions: Must be 5mm x 20mm (Axial) for mechanical compatibility
• Fuse Type: Must be Ceramic Cartridge with Slow Blow response
• Mounting Type: Must be Through Hole
• Voltage Ratings: Substitute must meet or exceed 500 V AC and 450 V DC specifications
• Operating Temperature: Must support -55°C ~ 125°C range
• Compliance: Must maintain RoHS3 status and international certifications

The Bel Fuse Inc. 0ADKP5000-RE meets these criteria with enhanced voltage ratings (600 V AC / 500 V DC) and equivalent mechanical and thermal characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 0977005.MXEP and Bel Fuse 0ADKP5000-RE are active products with full RoHS3 compliance and REACH unaffected status. The 0ADKP5000-RE provides higher voltage ratings (600 V AC / 500 V DC) and increased breaking capacity (200A AC / 300A DC versus 100A AC / 200A DC), making it suitable for applications requiring enhanced overvoltage protection margins. Both parts maintain identical current ratings, package dimensions, response characteristics, and operating temperature ranges, ensuring direct mechanical and electrical compatibility in through-hole circuit protection applications. Selection between these parts depends on specific circuit voltage requirements and available inventory.

Frequently Asked Questions (FAQ)

Q: Can the Bel Fuse 0ADKP5000-RE replace the Littelfuse 0977005.MXEP in all applications?

A: Yes, the 0ADKP5000-RE is a direct substitute. It maintains the same 5 A current rating, 5mm x 20mm package dimensions, slow-blow response, and operating temperature range. The higher voltage ratings (600 V AC / 500 V DC) provide additional protection margin and are compatible with circuits designed for the 0977005.MXEP.

Q: Are the physical dimensions identical between these two fuses?

A: Both fuses use the 5mm x 20mm (Axial) through-hole package. The Littelfuse part has a diameter of 0.228" (5.80mm) and length of 0.886" (22.50mm), while the Bel Fuse part has a diameter of 0.236" (6.00mm) and length of 0.886" (22.50mm). These minor dimensional variations do not affect mechanical compatibility in standard fuse holders.

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

A: The Littelfuse 0977005.MXEP has a melting I²t of 91, while the Bel Fuse 0ADKP5000-RE has a melting I²t of 50. This indicates the Littelfuse part has a higher thermal energy threshold before melting, affecting the speed of response to overcurrent conditions.

Q: Do both parts have the same certifications?

A: The Littelfuse 0977005.MXEP carries CE, PSE, and SEMKO approvals. The Bel Fuse 0ADKP5000-RE carries cURus certification. Both maintain RoHS3 compliance and REACH unaffected status. Verify that the specific certifications required by your application are met by the selected part.

Q: What is the DC cold resistance specification?

A: The Littelfuse 0977005.MXEP has a DC cold resistance of 0.0119 Ohms. This specification is not provided for the Bel Fuse 0ADKP5000-RE in the available data.