Littelfuse 0219.630M Equivalent & Substitute Parts

Part Overview

The Littelfuse 0219.630M is a 630 mA, 250 V AC/DC glass cartridge fuse with a 5mm x 20mm form factor, designed for applications requiring slow-blow protection. This part operates across a temperature range of -55°C to 125°C and features a breaking capacity of 150A at rated voltage. The 0219.630M is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for continued system support and new designs.

Key Parameters

Parameter	Value
Current Rating	630 mA
Voltage Rating (AC)	250 V
Response Time	Slow Blow
Package / Case	5mm x 20mm
Fuse Type	Cartridge, Glass
Mounting Type	Requires Holder
Operating Temperature	-55°C to 125°C
DC Cold Resistance	0.275 Ohms
Melting I²t	4.8
Breaking Capacity @ Rated Voltage	150A

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: current rating (630 mA), voltage rating (250 V AC), response time (slow blow), physical package (5mm x 20mm), fuse type (cartridge glass), and operating temperature range (-55°C to 125°C). All identified substitutes maintain these core electrical and mechanical specifications.

The substitute parts are grouped into two categories based on breaking capacity:

Category A – High Breaking Capacity (150A): Parts 0219.630MXABP and 0219.630MXAP maintain the original 150A breaking capacity specification, providing direct functional equivalence with enhanced compliance certifications.

Category B – Standard Breaking Capacity (35A): Parts 0213.630MXBP, 0213.630MXP, 0213.630TXP, 0218.630HXP, 0218.630MXBP, 0218.630MXP, 0218.630TXP, and 0218.630VXP operate at 35A breaking capacity. These parts satisfy the core electrical parameters but differ in breaking capacity specification.

Parameter Comparison

Part Number	Series	Current Rating	Voltage (AC)	Response Time	Package	Breaking Capacity	Melting I²t	DC Resistance	Operating Temp	Product Status	RoHS Status
0219.630M	219	630 mA	250 V	Slow Blow	5x20mm	150A	4.8	0.275 Ω	-55°C to 125°C	Obsolete	Non-compliant
0219.630MXABP	219XA	630 mA	250 V	Slow Blow	5x20mm	150A	4.82	0.275 Ω	-55°C to 125°C	Active	ROHS3 Compliant
0219.630MXAP	219XA	630 mA	250 V	Slow Blow	5x20mm	150A	4.82	0.275 Ω	-55°C to 125°C	Active	ROHS3 Compliant
0213.630MXBP	213	630 mA	250 V	Slow Blow	5x20mm	35A	4.8	0.275 Ω	-55°C to 125°C	Active	ROHS3 Compliant
0213.630MXP	213	630 mA	250 V	Slow Blow	5x20mm	35A	4.8	0.275 Ω	-55°C to 125°C	Active	ROHS3 Compliant
0213.630TXP	213	630 mA	250 V	Slow Blow	5x20mm	35A	4.8	0.275 Ω	-55°C to 125°C	Active	ROHS3 Compliant
0218.630HXP	218	630 mA	250 V	Slow Blow	5x20mm	35A	4.675	0.275 Ω	-55°C to 125°C	Active	ROHS3 Compliant
0218.630MXBP	218	630 mA	250 V	Slow Blow	5x20mm	35A	4.675	0.275 Ω	-55°C to 125°C	Active	ROHS3 Compliant
0218.630MXP	218	630 mA	250 V	Slow Blow	5x20mm	35A	4.675	0.275 Ω	-55°C to 125°C	Active	ROHS3 Compliant
0218.630TXP	218	630 mA	250 V	Slow Blow	5x20mm	35A	4.675	0.275 Ω	-55°C to 125°C	Active	ROHS3 Compliant
0218.630VXP	218	630 mA	250 V	Slow Blow	5x20mm	35A	4.675	0.275 Ω	-55°C to 125°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

For applications requiring direct functional replacement with identical breaking capacity (150A), select either 0219.630MXABP or 0219.630MXAP. Both parts are active products with ROHS3 compliance and maintain the original 150A breaking capacity specification. These parts are recommended for designs where the 150A breaking capacity is a critical system requirement.

For applications where 35A breaking capacity is acceptable, the Series 213 and Series 218 alternatives provide active product status with ROHS3 compliance. Series 213 parts (0213.630MXBP, 0213.630MXP, 0213.630TXP) and Series 218 parts (0218.630HXP, 0218.630MXBP, 0218.630MXP, 0218.630TXP, 0218.630VXP) all satisfy the core electrical specifications of 630 mA at 250 V AC with slow-blow response and 5mm x 20mm packaging.

All substitute parts are ROHS3 compliant, addressing regulatory requirements that the obsolete 0219.630M does not meet. Certification coverage varies across substitute options; verify that the selected part's approval agencies (BSI, CCC, CE, CSA, SEMKO, UL, VDE, K-MARK, KC) align with application requirements.

Frequently Asked Questions (FAQ)

Q: Can I use a 35A breaking capacity fuse as a substitute for the 150A breaking capacity original part?

A: Breaking capacity is a critical parameter that determines the fuse's ability to safely interrupt fault currents. Substitution between 150A and 35A breaking capacity ratings is not interchangeable. Select 0219.630MXABP or 0219.630MXAP if 150A breaking capacity is required. Use Series 213 or 218 alternatives only if system design permits 35A breaking capacity.

Q: Are all substitute parts physically compatible with the original fuse holder?

A: Yes. All substitute parts maintain the 5mm x 20mm cartridge form factor and require a holder for mounting, identical to the original 0219.630M specification. Physical installation compatibility is confirmed across all listed alternatives.

Q: What is the difference between the Series 219XA parts (0219.630MXABP and 0219.630MXAP)?

A: Both parts are Series 219XA with identical electrical specifications, breaking capacity (150A), and compliance status. The difference lies in packaging designation: MXABP indicates bulk packaging, while MXAP also indicates bulk packaging. Both are suitable for direct replacement of the obsolete 0219.630M.

Q: Why do Series 218 parts show a lower melting I²t value (4.675) compared to the original (4.8)?

A: Melting I²t is a thermal characteristic that influences fuse response behavior. The Series 218 parts with 4.675 I²t represent a slightly faster thermal response compared to the original 4.8 I²t specification. This difference is within the slow-blow classification but may affect precise trip timing in sensitive applications. Verify compatibility with circuit protection requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are ROHS3 compliant. The original 0219.630M is RoHS non-compliant. Substitution to any listed alternative ensures compliance with RoHS3 regulations.

Q: Which substitute part has the highest inventory availability?

A: Part 0213.630MXP has the highest inventory with 2,415 pieces in stock, followed by 0218.630MXP with 2,443 pieces. Both are Series 213 and 218 alternatives with 35A breaking capacity.

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