Littelfuse 0219.315M Equivalent & Substitute Parts

Part Overview

The Littelfuse 0219.315M is a 315 mA, 250 V AC/DC glass cartridge fuse with 5mm x 20mm dimensions and slow-blow response characteristics. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for direct component substitution in existing designs and new applications.

Key Parameters

Parameter	Value
Current Rating	315 mA
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Package / Case	5mm x 20mm
Response Time	Slow Blow
Mounting Type	Requires Holder
Operating Temperature Range	-55°C to 125°C
Melting I²t	1.14

Substitute Part Grouping Explanation

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

Substitute parts are grouped into two categories based on breaking capacity at rated voltage:

Category A: Breaking Capacity 35A — Series 213 and 218 parts (0213.315MXBP, 0213.315MXP, 0213.315TXP, 0218.315HXP, 0218.315MXBP, 0218.315MXP, 0218.315TXP, 0218.315VXP)

Category B: Breaking Capacity 150A — Series 219XA parts (0219.315MXABP, 0219.315MXAP)

The main part 0219.315M specifies 150A breaking capacity; Category B substitutes maintain this specification. Category A substitutes provide reduced breaking capacity and are suitable only where circuit protection requirements do not mandate 150A breaking capacity.

Parameter Comparison

Parameter	0219.315M (Main)	0213.315MXBP	0213.315MXP	0213.315TXP	0218.315HXP	0218.315MXBP	0218.315MXP	0218.315TXP	0218.315VXP	0219.315MXABP	0219.315MXAP
Current Rating (mA)	315	315	315	315	315	315	315	315	315	315	315
Voltage Rating (V AC)	250	250	250	250	250	250	250	250	250	250	250
Fuse Type	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass
Package / Case	5mm x 20mm	5mm x 20mm	5mm x 20mm	5mm x 20mm	5mm x 20mm	5mm x 20mm	5mm x 20mm	5mm x 20mm	5mm x 20mm	5mm x 20mm	5mm x 20mm
Response Time	Slow Blow	Slow Blow	Slow Blow	Slow Blow	Slow Blow	Slow Blow	Slow Blow	Slow Blow	Slow Blow	Slow Blow	Slow Blow
Breaking Capacity @ Rated Voltage (A)	150	35	35	35	35	35	35	35	35	150	150
Melting I²t	1.14	1.14	1.14	1.14	1.11	1.11	1.11	1.11	1.11	1.23	1.23
DC Cold Resistance (Ohms)	0.848	0.8475	0.8475	0.8475	0.8475	0.8475	0.8475	0.8475	0.8475	0.8475	0.8475
Operating Temperature Range	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (Breaking Capacity 150A): Parts 0219.315MXABP and 0219.315MXAP are direct functional equivalents to the obsolete 0219.315M. Both maintain 150A breaking capacity, identical electrical ratings, and are classified as active products with ROHS3 compliance. These parts are suitable for direct replacement in all applications where the original 0219.315M was specified.

Alternative Substitutes (Breaking Capacity 35A): Series 213 and 218 parts (0213.315MXBP, 0213.315MXP, 0213.315TXP, 0218.315HXP, 0218.315MXBP, 0218.315MXP, 0218.315TXP, 0218.315VXP) provide electrical equivalence but with reduced breaking capacity of 35A. These substitutes are suitable only for applications where circuit protection requirements do not mandate 150A breaking capacity. All are active products with ROHS3 compliance.

Certification Alignment: The main part 0219.315M carries approvals from BSI, CCC, CSA, KTL, PSE, SEMKO, UR, and VDE. Series 219XA substitutes (0219.315MXABP, 0219.315MXAP) carry CCC, CE, CSA, SEMKO, UL, and VDE approvals. Series 213 and 218 substitutes carry varying certification combinations including CCC, CE, CSA, K-MARK, KC, SEMKO, UL, and VDE. Certification alignment should be confirmed against specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can Series 213 and 218 parts with 35A breaking capacity replace the 0219.315M with 150A breaking capacity?

A: Series 213 and 218 parts maintain identical electrical specifications (315 mA, 250 V AC, slow-blow response) and physical dimensions (5mm x 20mm). However, they provide 35A breaking capacity versus the original 150A. Substitution is permissible only where circuit protection requirements do not mandate 150A breaking capacity. Application-specific fault current analysis is required to determine suitability.

Q: What is the difference between the 0219.315MXABP and 0219.315MXAP?

A: Both parts are functionally equivalent with identical electrical and mechanical specifications, 150A breaking capacity, and active product status. The primary difference is packaging designation (bulk for both) and inventory availability. Either part provides direct replacement for the obsolete 0219.315M.

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

A: All substitute parts maintain the 5mm x 20mm physical dimensions and cartridge glass fuse type with holder-based mounting. Physical compatibility with existing fuse holders is confirmed. Electrical compatibility depends on breaking capacity requirements as specified in the application circuit design.

Q: What is the significance of melting I²t values?

A: Melting I²t indicates the thermal energy required to melt the fuse element. The main part 0219.315M specifies 1.14 A²s. Series 213 substitutes maintain 1.14 A²s, while Series 218 substitutes specify 1.11 A²s, and Series 219XA substitutes specify 1.23 A²s. These variations reflect different fuse element designs within the same current and voltage ratings. Selection should align with circuit protection coordination requirements.

Q: Are all substitute parts RoHS compliant?

A: The obsolete 0219.315M is RoHS non-compliant. All identified substitute parts are ROHS3 compliant, meeting current environmental and material restriction standards. This compliance upgrade is inherent to all active alternatives.

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