Littelfuse 0218010.MXF11P Glass Cartridge Fuse 10A 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0218010.MXF11P is a 10A 250VAC slow-blow glass cartridge fuse in 5x20mm form factor, designed for AC/DC applications requiring holder-based mounting. This component is active in production and widely used in industrial and consumer electronics for circuit protection. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, and functional characteristics to ensure direct interchangeability in circuit protection applications.

Key Parameters

Parameter	Value
Current Rating	10 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Slow Blow
Package / Case	5mm x 20mm
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	100A
Operating Temperature Range	-55°C to 125°C
DC Cold Resistance	0.0045 Ohms
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters:

Current Rating: 10 A (exact match required)
Voltage Rating: 250 V AC (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Response Time: Slow Blow (exact match required)
Mounting Type: Requires Holder (exact match required)

Parts are grouped into two categories:

Parametric Equivalents (Littelfuse Series 218): Parts 0218010.HXP, 0218010.MXP, and 0218010.TXP match all critical electrical and mechanical parameters with identical melting I²t values (568) and breaking capacity (100A). These are direct functional equivalents within the Littelfuse 218 series.

Parametric Equivalents (Littelfuse Series 618): Part 0618010.MXP matches all critical electrical and mechanical parameters but belongs to a different series with identical performance characteristics.

Cross-Manufacturer Equivalents: SCHURTER 0034.3127 and 0034.5627.11, OptiFuse TSC-10A, and OptiFuse TSD-10A meet all critical electrical and mechanical specifications while originating from different manufacturers.

Secondary Equivalent: Part 0218010.VXP is functionally equivalent within the Littelfuse 218 series.

Parameter Comparison

Part Number	Manufacturer	Series	Current (A)	Voltage (V AC)	Package	Response Time	Breaking Capacity (A)	Melting I²t	Inventory (Pcs)	Product Status
0218010.MXF11P	Littelfuse Inc.	218	10	250	5x20mm	Slow Blow	100	568	904	Active
0218010.HXP	Littelfuse Inc.	218	10	250	5x20mm	Slow Blow	100	568	2200	Active
0218010.MXP	Littelfuse Inc.	218	10	250	5x20mm	Slow Blow	100	568	2300	Active
0218010.TXP	Littelfuse Inc.	218	10	250	5x20mm	Slow Blow	100	568	767	Active
0218010.VXP	Littelfuse Inc.	218	10	250	5x20mm	Slow Blow	100	568	854	Active
0618010.MXP	Littelfuse Inc.	618	10	250	5x20mm	Slow Blow	100	568	5200	Active
0034.3127	SCHURTER Inc.	FST 5x20	10	250	5x20mm	Slow Blow	100	520	50315	Active
0034.5627.11	SCHURTER Inc.	SMD-FST	10	250	5x20mm	Slow Blow	100	520	2353	Active
TSC-10A	OptiFuse	TSC	10	250	5x20mm	Slow Blow	100	274.6	1532	Active
TSD-10A	OptiFuse	TSD	10	250	5x20mm	Slow Blow	35	583.4	7035	Active

Engineering Selection Recommendations

All listed substitute parts are active products meeting the specified electrical and mechanical requirements for 10A 250VAC 5x20mm slow-blow glass cartridge fuse applications.

Littelfuse 218 Series (0218010.HXP, 0218010.MXP, 0218010.TXP, 0218010.VXP): These parts provide direct equivalence with identical melting I²t characteristics (568) and are certified to CE, CSA, KC, PSE, UL, and VDE standards. Selection among these variants depends on availability and specific certification requirements.

Littelfuse 618 Series (0618010.MXP): Offers equivalent electrical and mechanical performance with identical melting I²t (568) and breaking capacity. Certified to CE, CSA, UR, and VDE. Higher inventory availability (5200 pcs) supports supply chain continuity.

SCHURTER FST 5x20 (0034.3127): Provides direct mechanical and electrical equivalence with melting I²t of 520 and breaking capacity of 100A. Certified to CQC, cURus, PSE/JET, and VDE. Highest inventory availability (50315 pcs) ensures supply reliability.

SCHURTER SMD-FST (0034.5627.11): Functionally equivalent with melting I²t of 520 and breaking capacity of 100A. Certified to CQC, cURus, and VDE. Suitable for applications requiring SCHURTER certification profiles.

OptiFuse TSC-10A: Meets all critical electrical and mechanical specifications with melting I²t of 274.6 and breaking capacity of 100A. Certified to UL 248. Lower melting I²t indicates faster response characteristics within the slow-blow category.

OptiFuse TSD-10A: Meets electrical and mechanical specifications with melting I²t of 583.4 and breaking capacity of 35A. Certified to cURus and IEC 60127. Reduced breaking capacity (35A vs. 100A) limits application scope to lower fault current environments.

Frequently Asked Questions (FAQ)

Q: Can all listed parts be used interchangeably with the 0218010.MXF11P?

A: All listed parts match the critical specifications of 10A current rating, 250V AC voltage rating, 5x20mm package dimensions, slow-blow response time, and 100A breaking capacity (except TSD-10A at 35A). Physical interchangeability is confirmed. Application suitability depends on specific circuit protection requirements and certification mandates.

Q: What is the difference between Littelfuse 218 and 618 series fuses?

A: Both series provide identical electrical performance (10A, 250V, 568 melting I²t, 100A breaking capacity) and mechanical form factor. Series designation reflects internal design or manufacturing process differences. Selection between series depends on availability, certification requirements, and supply chain preferences.

Q: How do melting I²t values affect substitution?

A: Melting I²t determines the thermal energy required to melt the fuse element. Parts with identical melting I²t (568) provide equivalent protection characteristics. OptiFuse TSC-10A (274.6) and TSD-10A (583.4) have different melting I²t values, indicating different thermal response profiles. Selection must align with circuit protection design specifications.

Q: Are SCHURTER parts certified to the same standards as Littelfuse?

A: SCHURTER 0034.3127 and 0034.5627.11 carry certifications including CQC, cURus, PSE/JET, and VDE. Littelfuse 218 series includes CE, CSA, KC, PSE, UL, and VDE. Certification overlap exists (PSE, VDE), but complete certification profiles differ. Application requirements determine which certification set is necessary.

Q: What is the significance of breaking capacity ratings?

A: Breaking capacity indicates the maximum fault current the fuse can safely interrupt. Littelfuse 218, 618, SCHURTER 0034.3127, 0034.5627.11, and OptiFuse TSC-10A all provide 100A breaking capacity. OptiFuse TSD-10A is limited to 35A, restricting use to circuits with lower maximum fault currents.

Q: Can OptiFuse TSD-10A replace the main part in all applications?

A: TSD-10A matches electrical ratings and package dimensions but has reduced breaking capacity (35A vs. 100A). Substitution is valid only in applications where maximum fault current does not exceed 35A. Circuit analysis is required to confirm suitability.

Q: How should I select between multiple equivalent parts?

A: Selection criteria include: (1) inventory availability for supply continuity, (2) certification requirements for regulatory compliance, (3) melting I²t alignment with circuit protection design, (4) breaking capacity adequacy for maximum fault current, and (5) manufacturer preference based on established supply relationships.

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