Littelfuse 0218.250VXP Glass Cartridge Fuse 250mA 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0218.250VXP is an active-status glass cartridge fuse rated for 250mA at 250VAC, housed in a 5x20mm form factor requiring a dedicated holder. This slow-blow fuse is designed for circuit protection in AC/DC applications with a breaking capacity of 35A at rated voltage. Substitute parts are identified based on matching electrical specifications, mechanical dimensions, and approval certifications to ensure direct functional equivalence in protected circuits.

Key Parameters

Parameter	Value
Current Rating	250 mA
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Slow Blow
Package / Case	5mm x 20mm
Breaking Capacity @ Rated Voltage	35A
Mounting Type	Requires Holder
Operating Temperature Range	-55°C to 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: current rating (250mA), voltage rating (250VAC), fuse type (cartridge glass), response time (slow blow), physical dimensions (5x20mm), and mounting requirement (holder-based). Parts are grouped into two categories:

Category 1: Littelfuse Series 218 Direct Equivalents — Parts 0218.250HXP, 0218.250MXP, and 0218.250TXP maintain identical electrical and mechanical specifications with the main part, differing only in approval agency certifications (K-MARK vs. KC designation).

Category 2: Cross-Manufacturer and Alternative Series Equivalents — Parts from Littelfuse Series 219XA, 239, and 618, plus SCHURTER and OptiFuse offerings, match core electrical parameters but exhibit variations in breaking capacity, melting I²t values, or approval certifications that must be evaluated for specific application requirements.

Parameter Comparison

Part Number	Manufacturer	Series	Current Rating (mA)	Voltage (VAC)	Response Time	Package	Breaking Capacity (A)	Melting I²t	Product Status
0218.250VXP	Littelfuse	218	250	250	Slow Blow	5x20mm	35	0.5405	Active
0218.250HXP	Littelfuse	218	250	250	Slow Blow	5x20mm	35	0.5405	Active
0218.250MXP	Littelfuse	218	250	250	Slow Blow	5x20mm	35	0.5405	Active
0218.250TXP	Littelfuse	218	250	250	Slow Blow	5x20mm	35	0.5405	Active
0219.250MXAP	Littelfuse	219XA	250	250	Slow Blow	5x20mm	150	0.54	Active
0239.250HXP	Littelfuse	239	250	250	Slow Blow	5x20mm	35	0.34	Active
0239.250MXP	Littelfuse	239	250	250	Slow Blow	5x20mm	35	0.34	Active
0618.250MXP	Littelfuse	618	250	250	Slow Blow	5x20mm	35	0.5405	Active
0034.3111	SCHURTER	FST 5x20	250	250	Slow Blow	5x20mm	35	0.238	Active
0034.5611.11	SCHURTER	SMD-FST	250	250	Slow Blow	5x20mm	35	0.238	Active
TSC-250MA	OptiFuse	TSC	250	250	Slow Blow	5x20mm	100	0.278	Active

Engineering Selection Recommendations

Tier 1 — Direct Substitutes (Littelfuse Series 218): Parts 0218.250HXP, 0218.250MXP, and 0218.250TXP are functionally identical to the main part 0218.250VXP across all electrical and mechanical parameters. All maintain active product status and ROHS3 compliance. Selection among these three is determined by approval agency requirements: use 0218.250HXP or 0218.250TXP where KC certification is required; use 0218.250MXP where K-MARK certification is acceptable.

Tier 2 — Littelfuse Alternative Series: Parts 0219.250MXAP (Series 219XA), 0239.250HXP, 0239.250MXP (Series 239), and 0618.250MXP (Series 618) maintain matching current, voltage, and package specifications but differ in breaking capacity or melting I²t characteristics. The 0219.250MXAP offers elevated breaking capacity (150A vs. 35A) suitable for higher fault current environments. Series 239 and 618 variants present lower melting I²t values, affecting thermal response characteristics. Selection requires application-specific fault current and thermal response analysis.

Tier 3 — Cross-Manufacturer Equivalents: SCHURTER parts 0034.3111 and 0034.5611.11, and OptiFuse TSC-250MA match core electrical specifications but carry different approval certifications and melting I²t profiles. SCHURTER parts provide cURus and VDE certifications; OptiFuse TSC-250MA provides cULus certification with 100A breaking capacity. These are suitable where specific certification requirements align with application standards.

Frequently Asked Questions (FAQ)

Q: Can I substitute 0218.250HXP for 0218.250VXP in my circuit? A: Yes. Both parts are Littelfuse Series 218 fuses with identical current rating (250mA), voltage rating (250VAC), response time (slow blow), and 5x20mm package dimensions. The difference is approval agency certification; 0218.250HXP includes K-MARK certification while 0218.250VXP includes KC certification. Substitution is valid where your application accepts either certification.

Q: What is the difference between 0218.250MXP and 0239.250MXP? A: Both are 250mA, 250VAC slow-blow fuses in 5x20mm packages. The primary difference is melting I²t: 0218.250MXP has 0.5405 I²t while 0239.250MXP has 0.34 I²t. This means 0239.250MXP responds faster to thermal stress. Additionally, 0218.250MXP carries CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE certifications, while 0239.250MXP carries only CE, CSA, KC, and UL certifications. Select based on required thermal response and certification requirements.

Q: Why does 0219.250MXAP have a 150A breaking capacity instead of 35A? A: The 0219.250MXAP belongs to Littelfuse Series 219XA, which is engineered for higher fault current environments. While it maintains the same 250mA current rating and 250VAC voltage rating as the main part, its 150A breaking capacity (versus 35A) makes it suitable for circuits with higher available fault currents. Use this part only if your application requires this elevated breaking capacity; otherwise, standard 35A breaking capacity parts are appropriate.

Q: Can I use SCHURTER 0034.3111 or OptiFuse TSC-250MA as a direct replacement? A: Both parts match the electrical specifications (250mA, 250VAC, slow blow, 5x20mm) and are active products. However, they carry different approval certifications and melting I²t values. SCHURTER parts carry cURus and VDE certifications; OptiFuse carries cULus certification. Substitution is valid only if your application accepts these alternative certifications and the different thermal response characteristics (lower melting I²t values) are compatible with your circuit design.

Q: What does "Requires Holder" mean for mounting type? A: All listed fuses are cartridge-type fuses that must be installed in a dedicated fuse holder. They are not surface-mount or panel-mount components. Ensure your circuit board or panel includes the appropriate 5x20mm fuse holder before selecting any of these parts.

Q: Are all these fuses RoHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 Compliant status, meeting lead-free and hazardous substance restrictions for electronic components.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message