Littelfuse 0239.200MXEP Equivalent & Substitute Parts

Part Overview

The Littelfuse 0239.200MXEP is a 200 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 overcurrent response. The part maintains active product status with full regulatory compliance across CE, CSA, KC, and UL certifications. Equivalent and substitute parts are identified for applications where inventory availability, manufacturer preference, or specific performance characteristics necessitate component alternatives.

Substiute Parts

0239.200MXEP

Littelfuse Inc.In Stock: 11710239.200MXEP Datasheet

Current PartRFQ

0239.200HXEP

Littelfuse Inc.In Stock: 10580239.200HXEP Datasheet

DirectRFQ

5TTP 200-R

Bel Fuse Inc.In Stock: 18955TTP 200-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0239.200MXEP is determined by strict equivalence across the following parameters:

• Current Rating: 200 mA (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 5mm x 20mm (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

All identified substitute parts meet these core electrical and mechanical parameters. Variations in secondary characteristics such as breaking capacity, melting I²t, DC cold resistance, and dimensional tolerances are documented but do not preclude substitution when primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and ROHS3 compliance. The 0239.200HXEP (Littelfuse) is a direct equivalent within the same manufacturer series, offering identical electrical characteristics and regulatory certifications.

The 5TTP 200-R (Bel Fuse) meets all primary substitution criteria. This part exhibits higher breaking capacity (100A versus 35A) and elevated melting I²t (0.476 versus 0.165), indicating enhanced fault tolerance characteristics. The DC cold resistance is marginally higher at 4.66 Ohms compared to 3.8725 Ohms. Regulatory coverage includes CE, CSA, and cULus certifications. These secondary parameter differences do not affect substitution validity for applications requiring 200 mA, 250 V slow-blow protection in 5mm x 20mm through-hole configurations.

Frequently Asked Questions (FAQ)

Q: Can the 0239.200HXEP replace the 0239.200MXEP in existing designs?

A: Yes. Both parts are manufactured by Littelfuse, share identical current rating (200 mA), voltage rating (250 V), response time (slow blow), package dimensions (5mm x 20mm), and operating temperature range (-55°C ~ 125°C). Electrical and mechanical compatibility is complete.

Q: What are the differences between the Littelfuse 0239.200MXEP and the Bel Fuse 5TTP 200-R?

A: Primary electrical parameters are identical: 200 mA current rating, 250 V voltage rating, slow-blow response, and 5mm x 20mm package. Secondary differences include breaking capacity (35A versus 100A), melting I²t (0.165 versus 0.476), and DC cold resistance (3.8725 Ohms versus 4.66 Ohms). Both parts are ROHS3 compliant and hold active product status.

Q: Are there any certification differences between these substitute parts?

A: The 0239.200MXEP and 0239.200HXEP carry CE, CSA, KC, and UL certifications. The 5TTP 200-R carries CE, CSA, and cULus certifications. All certifications are recognized regulatory approvals suitable for industrial and commercial applications.

Q: Can I use the 5TTP 200-R in place of the 0239.200MXEP if breaking capacity is a design consideration?

A: The 5TTP 200-R provides higher breaking capacity (100A) compared to the 0239.200MXEP (35A). This characteristic does not prevent substitution; however, application-specific requirements must determine whether elevated breaking capacity is beneficial or irrelevant to circuit protection objectives.

Q: Are all three parts available in the same packaging format?

A: Yes. All three parts are supplied in bulk packaging with 5mm x 20mm axial through-hole form factor, suitable for standard fuse holder installations.