Littelfuse 0218.063H Glass Cartridge Fuse 63mA 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0218.063H is a 63mA 250VAC glass cartridge fuse with 5x20mm form factor, classified as obsolete. This fuse operates as a slow-blow protective device requiring a dedicated holder for installation. Due to its obsolete status, equivalent substitute parts from active product lines are necessary to maintain circuit protection functionality in applications requiring 63mA rated protection at 250V AC/DC with slow-blow response characteristics.

Key Parameters

Parameter	Value
Current Rating	63 mA
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Package / Case	5mm x 20mm
Response Time	Slow Blow
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	35A
Operating Temperature Range	-55°C ~ 125°C
Size / Dimension	0.205" Dia x 0.787" L (5.20mm x 20.00mm)

Substitute Part Grouping Explanation

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

Current Rating: 63 mA (exact match required)
Voltage Rating: 250 V AC (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Response Time: Slow Blow (exact match required)
Mounting Type: Requires Holder (exact match required)
Breaking Capacity @ Rated Voltage: 35A (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)

All substitute parts listed meet these criteria. Variations in DC Cold Resistance, Melting I²t, and approval agency certifications do not disqualify substitution when all primary electrical and mechanical parameters align.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating	Voltage Rating (AC)	Package / Case	Response Time	Breaking Capacity @ Rated Voltage	Operating Temperature	Product Status	RoHS Status
0218.063H	Littelfuse Inc.	63 mA	250 V	5mm x 20mm	Slow Blow	35A	-55°C ~ 125°C	Obsolete	RoHS non-compliant
0218.063HXP	Littelfuse Inc.	63 mA	250 V	5mm x 20mm	Slow Blow	35A	-55°C ~ 125°C	Active	ROHS3 Compliant
0218.063MXGP	Littelfuse Inc.	63 mA	250 V	5mm x 20mm	Slow Blow	35A	-55°C ~ 125°C	Active	ROHS3 Compliant
0218.063MXP	Littelfuse Inc.	63 mA	250 V	5mm x 20mm	Slow Blow	35A	-55°C ~ 125°C	Active	ROHS3 Compliant
0218.063TXP	Littelfuse Inc.	63 mA	250 V	5mm x 20mm	Slow Blow	35A	-55°C ~ 125°C	Active	ROHS3 Compliant
0218.063VXP	Littelfuse	63 mA	250 V	5mm x 20mm	Slow Blow	35A	-55°C ~ 125°C	Active	ROHS3 Compliant
0219.063MXAP	Littelfuse Inc.	63 mA	250 V	5mm x 20mm	Slow Blow	150A	-55°C ~ 125°C	Active	ROHS3 Compliant
BK/GDC-63MA	Eaton - Electronics Division	63 mA	250 V	5mm x 20mm	Slow Blow	35A	-55°C ~ 125°C	Active	RoHS Compliant
0034.5605.22	SCHURTER Inc.	63 mA	250 V	5mm x 20mm	Slow Blow	35A	-55°C ~ 125°C	Active	ROHS3 Compliant
5ST 63-R	Bel Fuse Inc.	63 mA	250 V	5mm x 20mm	Slow Blow	35A	-55°C ~ 125°C	Active	ROHS3 Compliant
BK/S506-63-R	Eaton - Electronics Division	63 mA	250 V	5mm x 20mm	Slow Blow	35A	-55°C ~ 125°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain electrical and mechanical equivalence to the 0218.063H. Selection should prioritize active product status and current compliance certifications.

Littelfuse 0218.063HXP, 0218.063MXP, 0218.063TXP, and 0218.063VXP are direct Littelfuse alternatives with ROHS3 compliance and active product status. These parts maintain the original manufacturer continuity and are recommended for applications requiring RoHS compliance.

Littelfuse 0219.063MXAP offers equivalent electrical performance with increased breaking capacity (150A vs 35A) and active product status. This part is suitable for applications requiring higher fault current handling capability.

Eaton BK/GDC-63MA and BK/S506-63-R provide cross-manufacturer alternatives with active product status and RoHS compliance. Both maintain 35A breaking capacity and are suitable for direct substitution.

SCHURTER 0034.5605.22 and Bel Fuse 5ST 63-R are alternative manufacturer options with active product status and ROHS3 compliance. Both maintain full electrical and mechanical equivalence.

Frequently Asked Questions (FAQ)

Q: Can the 0218.063H be directly replaced with any of these substitute parts?

A: Yes. All listed substitute parts meet the required electrical parameters (63mA, 250V AC, slow-blow response) and mechanical specifications (5x20mm cartridge form factor requiring holder). Direct physical and functional substitution is supported.

Q: What is the difference between Littelfuse variants (0218.063HXP, 0218.063MXP, 0218.063TXP, 0218.063VXP)?

A: All variants maintain identical current rating, voltage rating, package, and response time. Differences exist in DC Cold Resistance and Melting I²t values, which do not affect substitution eligibility. All are active products with ROHS3 compliance.

Q: Why does 0219.063MXAP have a different breaking capacity (150A vs 35A)?

A: The 0219.063MXAP belongs to the 219XA series and provides enhanced fault current handling. It remains electrically and mechanically equivalent for normal operation but offers superior performance in high-fault-current environments. Breaking capacity does not affect normal circuit protection function at rated current.

Q: Are there packaging differences among substitute parts?

A: Most substitute parts are supplied in bulk packaging. SCHURTER 0034.5605.22 is supplied in Tape & Reel format. Packaging does not affect electrical or mechanical compatibility; selection depends on procurement and assembly requirements.

Q: Which substitute parts have the best compliance certifications?

A: All active substitute parts carry current compliance certifications. Littelfuse variants include CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE approvals. Eaton parts include BSI, CCC, CSA, IMQ, SEMKO, UR, and VDE approvals. SCHURTER includes cURus and VDE approvals. Bel Fuse includes CCC, CE, CSA, cURus, IMQ, SEMKO, and VDE approvals. Selection should align with specific application certification requirements.

Q: Is RoHS compliance a requirement for substitution?

A: The original 0218.063H is RoHS non-compliant. All active substitute parts are ROHS3 compliant or RoHS compliant. For new designs or applications with RoHS requirements, any active substitute part is suitable. For legacy applications without RoHS mandates, compliance status does not affect functional substitution.

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