Littelfuse 0219004.MXA Glass Cartridge Fuse 4A 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0219004.MXA is a 4A 250VAC glass cartridge fuse with 5mm x 20mm dimensions, designed for slow-blow response applications requiring holder mounting. This part is classified as obsolete. Due to its obsolete status, equivalent substitute parts from the active product lines are necessary to maintain circuit protection functionality in new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Current Rating	4 A
Voltage Rating (AC)	250 V
Package / Case	5mm x 20mm
Fuse Type	Cartridge, Glass
Response Time	Slow Blow
Mounting Type	Requires Holder
Operating Temperature Range	-55°C to 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 critical parameters:

Current Rating: 4 A (exact match required)
Voltage Rating (AC): 250 V (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)
Operating Temperature Range: -55°C to 125°C (exact match required)

All substitute parts listed below meet these criteria. Variations in breaking capacity, melting I²t, DC cold resistance, and series designation do not preclude substitution when the above parameters are identical.

Parameter Comparison

Part Number	Manufacturer	Series	Current Rating	Voltage Rating (AC)	Package / Case	Response Time	Breaking Capacity @ Rated Voltage	Melting I²t	DC Cold Resistance (Ohms)	Product Status	RoHS Status
0219004.MXA	Littelfuse Inc.	219XA	4 A	250 V	5mm x 20mm	Slow Blow	150 A	330	0.0158	Obsolete	RoHS non-compliant
0219004.MXAP	Littelfuse Inc.	219XA	4 A	250 V	5mm x 20mm	Slow Blow	150 A	330	0.0158	Active	ROHS3 Compliant
0213004.MXBP	Littelfuse Inc.	213	4 A	250 V	5mm x 20mm	Slow Blow	40 A	226.505	0.017	Active	ROHS3 Compliant
0213004.MXP	Littelfuse Inc.	213	4 A	250 V	5mm x 20mm	Slow Blow	40 A	226.505	0.017	Active	ROHS3 Compliant
0213004.TXP	Littelfuse Inc.	213	4 A	250 V	5mm x 20mm	Slow Blow	40 A	226.505	0.017	Active	ROHS3 Compliant
0218004.HXP	Littelfuse Inc.	218	4 A	250 V	5mm x 20mm	Slow Blow	40 A	69.1	0.0129	Active	ROHS3 Compliant
0218004.MXBP	Littelfuse Inc.	218	4 A	250 V	5mm x 20mm	Slow Blow	40 A	69.1	0.0129	Active	ROHS3 Compliant
0218004.MXF11P	Littelfuse Inc.	218	4 A	250 V	5mm x 20mm	Slow Blow	40 A	69.1	0.0129	Active	ROHS3 Compliant
0218004.MXP	Littelfuse Inc.	218	4 A	250 V	5mm x 20mm	Slow Blow	40 A	69.1	0.0129	Active	ROHS3 Compliant
0218004.TXP	Littelfuse Inc.	218	4 A	250 V	5mm x 20mm	Slow Blow	40 A	69.1	0.0129	Active	ROHS3 Compliant
0218004.VXP	Littelfuse Inc.	218	4 A	250 V	5mm x 20mm	Slow Blow	40 A	69.1	0.0129	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Series Replacement (Recommended Primary Choice)

The 0219004.MXAP is the direct active equivalent of the obsolete 0219004.MXA. Both parts share identical series designation (219XA), current rating, voltage rating, package dimensions, response time, and breaking capacity specifications. The 0219004.MXAP is ROHS3 compliant and maintains full compatibility with existing holder assemblies and circuit designs. This part is the preferred substitution path for direct replacement applications.

Series 213 and 218 Alternatives

Parts from the 213 and 218 series (0213004.MXBP, 0213004.MXP, 0213004.TXP, 0218004.HXP, 0218004.MXBP, 0218004.MXF11P, 0218004.MXP, 0218004.TXP, 0218004.VXP) are parametrically equivalent across all critical electrical and mechanical parameters. These alternatives are suitable for applications where the specific series designation is not a design constraint. All listed alternatives are active products with ROHS3 compliance and full regulatory certifications (CCC, CE, CSA, PSE, SEMKO, UL, VDE).

Compliance Considerations

All substitute parts listed are ROHS3 compliant, addressing the non-compliance status of the obsolete 0219004.MXA. Regulatory approvals across all substitutes include CCC, CE, CSA, PSE, SEMKO, UL, and VDE certifications, ensuring suitability for global applications.

Frequently Asked Questions (FAQ)

Q: Can I use any of the listed substitute parts interchangeably with the 0219004.MXA?

A: Yes, all listed parts meet the critical substitution parameters: 4A current rating, 250V AC voltage rating, 5mm x 20mm package dimensions, slow-blow response, and cartridge glass fuse type. Physical compatibility with existing fuse holders is maintained across all substitutes.

Q: What is the difference between the 219XA series (0219004.MXAP) and the 213/218 series alternatives?

A: The 219XA series maintains identical breaking capacity (150A) and melting I²t (330) to the original part. The 213 and 218 series have lower breaking capacity (40A) and different melting I²t values (226.505 for 213 series, 69.1 for 218 series). For applications requiring the original breaking capacity specification, the 0219004.MXAP is the appropriate choice. For general circuit protection applications where breaking capacity is not a limiting design factor, the 213 and 218 series alternatives are suitable.

Q: Are all substitute parts RoHS compliant?

A: Yes, all substitute parts listed are ROHS3 compliant. The original 0219004.MXA is RoHS non-compliant. Substitution with any listed alternative addresses RoHS compliance requirements for new designs and production.

Q: What certifications do the substitute parts carry?

A: All substitute parts carry multiple regulatory certifications including CCC, CE, CSA, PSE, SEMKO, UL, and VDE. The 213 series additionally includes BSI and UR certifications. The 218 series includes K-MARK and KC certifications. These certifications ensure global regulatory compliance across industrial and consumer applications.

Q: Can I mix different substitute part numbers in the same application?

A: Yes, all listed substitutes are electrically and mechanically equivalent for the critical parameters governing fuse selection. However, for consistency in inventory management and design documentation, using a single part number across an application is recommended.

Q: What is the difference between the packaging designations (MXAP, MXP, TXP, HXP, VXP, MXF11P)?

A: The packaging designations indicate different packaging formats and tape/reel configurations for automated assembly. All designations represent the same electrical and mechanical specifications. Selection should be based on procurement and assembly process requirements.

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