Littelfuse 0219.800M Fuse Glass 800mA 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0219.800M is an 800 mA, 250 V AC/DC slow-blow glass cartridge fuse in 5mm x 20mm form factor, designed for applications requiring holder-mounted protection. This part is classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing component sourcing and design continuity. Active alternatives from Littelfuse maintain the same electrical ratings and physical dimensions while offering current product status and improved compliance certifications.

Key Parameters

Parameter	Value
Current Rating	800 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 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 for the 0219.800M is determined by strict equivalence across the following parameters:

Current Rating: 800 mA (exact match required)
Voltage Rating (AC): 250 V (exact match required)
Response Time: Slow Blow (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Fuse Type: Cartridge, Glass (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. Differences in breaking capacity, melting I²t, DC cold resistance, and approval agencies are noted but do not preclude substitution when electrical and mechanical parameters align.

Parameter Comparison

Part Number	Series	Current Rating	Voltage (AC)	Response Time	Package	Breaking Capacity @ Rated Voltage	Melting I²t	DC Cold Resistance (Ohms)	Product Status	RoHS Status
0219.800M	219	800 mA	250 V	Slow Blow	5mm x 20mm	150A	9.42	0.163	Obsolete	RoHS non-compliant
0213.800MXBP	213	800 mA	250 V	Slow Blow	5mm x 20mm	35A	9.42	0.1635	Active	ROHS3 Compliant
0213.800MXP	213	800 mA	250 V	Slow Blow	5mm x 20mm	35A	9.42	0.1635	Active	ROHS3 Compliant
0213.800TXP	213	800 mA	250 V	Slow Blow	5mm x 20mm	35A	9.42	0.1635	Active	ROHS3 Compliant
0218.800HXP	218	800 mA	250 V	Slow Blow	5mm x 20mm	35A	3.37	0.0813	Active	ROHS3 Compliant
0218.800MXBP	218	800 mA	250 V	Slow Blow	5mm x 20mm	35A	3.37	0.0813	Active	ROHS3 Compliant
0218.800MXP	218	800 mA	250 V	Slow Blow	5mm x 20mm	35A	3.37	0.0813	Active	ROHS3 Compliant
0218.800TXP	218	800 mA	250 V	Slow Blow	5mm x 20mm	35A	3.37	0.0813	Active	ROHS3 Compliant
0218.800VXP	218	800 mA	250 V	Slow Blow	5mm x 20mm	35A	3.37	0.0813	Active	ROHS3 Compliant
0219.800MXABP	219XA	800 mA	250 V	Slow Blow	5mm x 20mm	150A	9.35	0.1635	Active	ROHS3 Compliant
0219.800MXAP	219XA	800 mA	250 V	Slow Blow	5mm x 20mm	150A	9.35	0.1635	Active	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain electrical and mechanical compatibility with the 0219.800M. Selection should prioritize active product status and compliance requirements:

Series 219XA (0219.800MXABP, 0219.800MXAP): Direct functional equivalents with 150A breaking capacity matching the original 0219.800M. Both parts are active, ROHS3 compliant, and carry UL, CSA, and CE certifications. These represent the most direct replacement path for applications requiring high breaking capacity.

Series 213 (0213.800MXBP, 0213.800MXP, 0213.800TXP): Active alternatives with 35A breaking capacity. All three variants are ROHS3 compliant with CE, CSA, and CCC certifications. Melting I²t of 9.42 matches the original part. These are suitable for applications where 35A breaking capacity is acceptable.

Series 218 (0218.800HXP, 0218.800MXBP, 0218.800MXP, 0218.800TXP, 0218.800VXP): Active alternatives with 35A breaking capacity and lower melting I²t (3.37). All variants are ROHS3 compliant with UL, CSA, and CCC certifications. These parts offer faster response characteristics due to reduced melting I²t and are suitable for applications tolerating faster fuse operation.

Applications requiring RoHS compliance must use Series 213, 218, or 219XA variants, as the original 0219.800M is RoHS non-compliant.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 0219.800M with any of the listed parts?

A: Yes, all listed parts are electrically and mechanically equivalent. They share identical current rating (800 mA), voltage rating (250 V AC), response time (slow blow), and physical dimensions (5mm x 20mm). Selection depends on application requirements for breaking capacity, compliance certifications, and product availability.

Q: What is the difference between Series 219XA and Series 218?

A: Series 219XA (0219.800MXABP, 0219.800MXAP) maintains 150A breaking capacity and melting I²t of 9.35, closely matching the original 0219.800M. Series 218 parts have 35A breaking capacity and lower melting I²t (3.37), resulting in faster fuse operation. Both are functionally compatible but differ in response characteristics.

Q: Why do Series 213 and 218 have lower breaking capacity than the original part?

A: Breaking capacity is a design parameter that does not affect substitution eligibility when electrical and mechanical parameters match. Lower breaking capacity indicates different internal construction but maintains the same current rating and voltage rating. Application requirements determine whether 35A or 150A breaking capacity is necessary.

Q: Is the 0219.800M still available?

A: The 0219.800M is classified as obsolete. Active alternatives from Littelfuse are recommended for new designs and ongoing sourcing. Series 219XA parts (0219.800MXABP, 0219.800MXAP) provide the closest functional match with active product status.

Q: Do all substitute parts meet RoHS requirements?

A: All substitute parts listed are ROHS3 compliant. The original 0219.800M is RoHS non-compliant. Applications requiring RoHS compliance must transition to one of the active substitute parts.

Q: What certifications should I verify for my application?

A: Certification requirements depend on end-use application and regional standards. All substitute parts carry multiple certifications including CCC, CE, CSA, SEMKO, and UL. Verify that the selected part's certification list includes all agencies required by your application and regional standards.

Q: Can I use Series 218 parts in place of Series 219XA?

A: Yes, Series 218 parts are electrically and mechanically compatible. However, Series 218 has lower melting I²t (3.37 vs. 9.35), resulting in faster fuse operation. Confirm that faster response time is acceptable for your application before substitution.

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