Littelfuse 0218.315H Equivalent & Substitute Parts

Part Overview

The Littelfuse 0218.315H is a 315 mA, 250 V AC/DC slow-blow glass cartridge fuse in 5mm x 20mm form factor, designed for applications requiring holder-mounted fuse protection. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for direct replacement in existing designs.

Key Parameters

Parameter	Value
Current Rating	315 mA
Voltage Rating (AC)	250 V
Response Time	Slow Blow
Package / Case	5mm x 20mm
Fuse Type	Cartridge, Glass
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	35 A
Melting I²t	1.14
Operating Temperature Range	-55°C to 125°C
DC Cold Resistance	0.848 Ohms

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: current rating (315 mA), voltage rating (250 V AC), response time (slow blow), package dimensions (5mm x 20mm), fuse type (cartridge glass), and mounting requirement (holder-mounted). All identified substitutes maintain these core electrical and mechanical specifications.

Substitute parts are grouped into two categories based on series designation and product status:

Series 213 Active Substitutes: Parts 0213.315MXBP, 0213.315MXP, and 0213.315TXP provide direct parametric equivalence with active product status and RoHS3 compliance.

Series 218 Active Substitutes: Parts 0218.315HXP, 0218.315MXBP, 0218.315MXP, 0218.315TXP, and 0218.315VXP maintain the same series as the main part with active status and RoHS3 compliance.

Series 219XA Active Substitutes: Parts 0219.315MXABP and 0219.315MXAP offer higher breaking capacity (150 A versus 35 A) while maintaining all other core parameters, providing enhanced protection capability in the same form factor.

Parameter Comparison

Part Number	Manufacturer	Series	Current Rating	Voltage Rating (AC)	Response Time	Package	Breaking Capacity	Melting I²t	DC Cold Resistance	Product Status	RoHS Status
0218.315H	Littelfuse Inc.	218	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	1.14	0.848 Ω	Obsolete	Non-compliant
0213.315MXBP	Littelfuse Inc.	213	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	1.14	0.8475 Ω	Active	RoHS3 Compliant
0213.315MXP	Littelfuse Inc.	213	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	1.14	0.8475 Ω	Active	RoHS3 Compliant
0213.315TXP	Littelfuse Inc.	213	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	1.14	0.8475 Ω	Active	RoHS3 Compliant
0218.315HXP	Littelfuse Inc.	218	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	1.11	0.8475 Ω	Active	RoHS3 Compliant
0218.315MXBP	Littelfuse Inc.	218	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	1.11	0.8475 Ω	Active	RoHS3 Compliant
0218.315MXP	Littelfuse Inc.	218	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	1.11	0.8475 Ω	Active	RoHS3 Compliant
0218.315TXP	Littelfuse Inc.	218	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	1.11	0.8475 Ω	Active	RoHS3 Compliant
0218.315VXP	Littelfuse Inc.	218	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	1.11	0.8475 Ω	Active	RoHS3 Compliant
0219.315MXABP	Littelfuse Inc.	219XA	315 mA	250 V	Slow Blow	5mm x 20mm	150 A	1.23	0.8475 Ω	Active	RoHS3 Compliant
0219.315MXAP	Littelfuse Inc.	219XA	315 mA	250 V	Slow Blow	5mm x 20mm	150 A	1.23	0.8475 Ω	Active	RoHS3 Compliant

Engineering Selection Recommendations

All identified substitute parts maintain active product status, ensuring long-term availability and supply chain continuity. Series 213 and Series 218 substitutes (0213.315MXBP, 0213.315MXP, 0213.315TXP, 0218.315HXP, 0218.315MXBP, 0218.315MXP, 0218.315TXP, 0218.315VXP) provide direct parametric replacement with RoHS3 compliance and identical breaking capacity specifications.

Series 219XA substitutes (0219.315MXABP, 0219.315MXAP) offer enhanced breaking capacity at 150 A, suitable for applications requiring higher fault current protection while maintaining identical current rating, voltage rating, and form factor. These parts carry RoHS3 compliance and active product status.

Selection between Series 213, 218, and 219XA should be based on application requirements for breaking capacity and existing certification requirements. All substitutes carry international approvals including UL, CSA, CE, and VDE certifications.

Frequently Asked Questions (FAQ)

Q: Can Series 213 parts directly replace the 0218.315H? A: Yes. Series 213 parts (0213.315MXBP, 0213.315MXP, 0213.315TXP) maintain identical electrical parameters: 315 mA current rating, 250 V voltage rating, slow-blow response, and 5mm x 20mm form factor. All are active products with RoHS3 compliance.

Q: What is the difference between Series 218 and Series 219XA substitutes? A: Series 218 substitutes maintain the original 35 A breaking capacity. Series 219XA substitutes (0219.315MXABP, 0219.315MXAP) provide 150 A breaking capacity while preserving all other electrical and mechanical specifications. Selection depends on application fault current requirements.

Q: Are all substitutes compatible with existing fuse holders designed for the 0218.315H? A: Yes. All substitute parts maintain the 5mm x 20mm cartridge form factor and require holder mounting, ensuring mechanical compatibility with existing fuse holder designs.

Q: What certifications do the substitute parts carry? A: Substitute parts carry multiple international certifications including UL, CSA, CE, VDE, CCC, SEMKO, and K-MARK. Specific certification combinations vary by part number; refer to individual part specifications for application-specific requirements.

Q: Why is the DC cold resistance slightly different between the main part and substitutes? A: The main part 0218.315H specifies 0.848 Ohms, while active substitutes specify 0.8475 Ohms. This minor variation remains within acceptable tolerance for fuse cartridge specifications and does not affect functional equivalence.

Q: Are Series 213 substitutes available in higher inventory quantities? A: Series 218 part 0218.315MXP offers the highest inventory availability at 8,839 pieces. Series 213 part 0213.315MXP provides 2,029 pieces. Inventory levels should be confirmed for specific procurement requirements.

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