Littelfuse 0216.315MXP Ceramic Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0216.315MXP is a 315 mA ceramic cartridge fuse rated for 250 V AC/DC operation in a 5mm x 20mm form factor. This fast-blow fuse is designed for applications requiring circuit protection with rapid response characteristics. The part maintains active product status with full regulatory compliance across multiple certification bodies. Substitute parts are identified based on matching electrical ratings, mechanical dimensions, and performance characteristics that ensure functional equivalence in circuit protection applications.

Substiute Parts

0216.315MXP

Littelfuse Inc.In Stock: 14980216.315MXP Datasheet

Current PartRFQ

0216.315TXP

Littelfuse Inc.In Stock: 11920216.315TXP Datasheet

Parametric EquivalentRFQ

FCD-315MA

OptiFuseIn Stock: 2579FCD-315MA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0216.315MXP are qualified based on the following critical parameters that determine functional equivalence:

• Current Rating: 315 mA (exact match required)
• Voltage Rating: 250 V AC minimum (DC rating may vary)
• Fuse Type: Cartridge, Ceramic (construction type)
• Package / Case: 5mm x 20mm (physical dimensions)
• Response Time: Fast Blow (operating characteristic)
• Breaking Capacity: 1.5 kA @ rated voltage
• Operating Temperature: -55°C to 125°C (environmental range)

Parts meeting all these parameters are considered parametric equivalents suitable for direct substitution in applications designed for the 0216.315MXP.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and meet RoHS3 compliance requirements, qualifying them for use in applications subject to environmental regulations.

The 0216.315TXP (Littelfuse) is a direct parametric equivalent to the 0216.315MXP, differing only in response time designation (TXP vs. MXP). Both parts share identical electrical ratings, mechanical dimensions, and thermal characteristics. Selection between these two Littelfuse variants depends on specific application requirements for response time classification.

The FCD-315MA (OptiFuse) meets all critical electrical and mechanical parameters. This part explicitly specifies 250 V DC rating, whereas the Littelfuse variants do not provide DC voltage specification. The melting I²t value (0.0142) is marginally higher than the Littelfuse parts (0.01), indicating slightly different thermal response characteristics within the fast-blow category. The FCD-315MA is certified to IEC 60127 standard.

All three parts are approved for the same operating temperature range (-55°C to 125°C) and share identical breaking capacity ratings (1.5 kA). Physical dimensions and mounting requirements are identical across all substitutes.

Frequently Asked Questions (FAQ)

Q: Can the 0216.315TXP replace the 0216.315MXP in any application?

A: Yes. Both parts are manufactured by Littelfuse with identical electrical ratings (315 mA, 250 V AC), mechanical dimensions (5mm x 20mm), and operating temperature range (-55°C to 125°C). The designation difference (MXP vs. TXP) reflects response time classification; both are fast-blow fuses suitable for direct substitution.

Q: Is the OptiFuse FCD-315MA compatible with applications designed for the Littelfuse 0216.315MXP?

A: Yes. The FCD-315MA matches all critical parameters: 315 mA current rating, 250 V AC voltage rating, 5mm x 20mm package, fast-blow response, and 1.5 kA breaking capacity. The FCD-315MA additionally specifies 250 V DC rating. The melting I²t value differs slightly (0.0142 vs. 0.01), which represents a minor variation in thermal response within the fast-blow classification.

Q: What is the significance of the melting I²t parameter in fuse selection?

A: The melting I²t value indicates the thermal energy required to melt the fuse element. The 0216.315MXP and 0216.315TXP both specify 0.01, while the FCD-315MA specifies 0.0142. These values are sufficiently close that both parts function within the fast-blow category. Selection should be based on application-specific thermal requirements and circuit design parameters.

Q: Are all three parts suitable for DC applications?

A: The 0216.315MXP and 0216.315TXP do not explicitly specify DC voltage ratings in the provided data. The FCD-315MA explicitly specifies 250 V DC rating. For applications requiring confirmed DC operation, the FCD-315MA provides explicit DC voltage specification.

Q: What certifications apply to these fuse parts?

A: The 0216.315MXP and 0216.315TXP carry approvals from CCC, CE, CSA, SEMKO, UR, and VDE. The FCD-315MA is certified to IEC 60127 standard. All three parts are ROHS3 compliant and carry EAR99 ECCN classification.

Q: Do these fuses require a holder for installation?

A: Yes. All three parts are cartridge fuses requiring a dedicated fuse holder for installation. The 5mm x 20mm form factor is standard for this holder type.