Littelfuse 0219.315TXAP Equivalent & Substitute Parts

Part Overview

The Littelfuse 0219.315TXAP is a 315 mA, 250 V AC glass cartridge fuse with slow blow response time, housed in a 5mm x 20mm form factor. This fuse requires a holder for installation and is designed for circuit protection applications requiring controlled response characteristics. The part is active in production status. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

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
Operating Temperature Range	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following critical parameters:

Current Rating: 315 mA (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)
Mounting Type: Requires Holder (exact match required)
Response Time: Slow Blow (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)

Parts meeting all these criteria are classified as parametric equivalents. Secondary parameters such as breaking capacity, melting I²t, and approval agencies may vary within acceptable engineering tolerances for the application.

Parameter Comparison

Part Number	Manufacturer	Current Rating	Voltage (AC)	Response Time	Package	Breaking Capacity @ Rated Voltage	Melting I²t	Operating Temperature	Inventory (Pcs)
0219.315TXAP	Littelfuse	315 mA	250 V	Slow Blow	5mm x 20mm	150 A	1.23	-55°C ~ 125°C	792
0213.315MXP	Littelfuse	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	1.14	-55°C ~ 125°C	2029
0218.315HXP	Littelfuse	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	1.11	-55°C ~ 125°C	900
0218.315MXP	Littelfuse	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	1.11	-55°C ~ 125°C	8839
0218.315TXP	Littelfuse	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	1.11	-55°C ~ 125°C	782
0219.315MXAP	Littelfuse	315 mA	250 V	Slow Blow	5mm x 20mm	150 A	1.23	-55°C ~ 125°C	1899
0034.3112	SCHURTER	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	0.544	-55°C ~ 125°C	5998
0034.5612.11	SCHURTER	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	0.544	-55°C ~ 125°C	1225
0034.5708.11	SCHURTER	315 mA	250 V	Slow Blow	5mm x 20mm	35 A	4.17	-55°C ~ 125°C	1181
TSC-315MA	OptiFuse	315 mA	250 V	Slow Blow	5mm x 20mm	100 A	0.5257	-55°C ~ 125°C	1162

Engineering Selection Recommendations

All listed substitute parts meet the core electrical and mechanical parameters required for direct substitution with the 0219.315TXAP. Selection among equivalents should be based on the following factors:

Littelfuse Series 219XA and 213 Parts (0219.315TXAP, 0219.315MXAP, 0213.315MXP): These parts share identical manufacturer lineage and approval certifications including CCC, CE, CSA, SEMKO, UL, and VDE. The 0219.315MXAP is functionally identical to the main part with higher inventory availability (1899 pcs). The 0213.315MXP offers the highest inventory level (2029 pcs) with equivalent electrical performance.

Littelfuse Series 218 Parts (0218.315HXP, 0218.315MXP, 0218.315TXP): These parts provide parametric equivalence with approval certifications including CCC, CE, CSA, SEMKO, UL, and VDE. The 0218.315MXP has the highest inventory among this group (8839 pcs) and maintains full compliance with required standards.

SCHURTER Parts (0034.3112, 0034.5612.11, 0034.5708.11): These parts meet all core substitution criteria with ROHS3 compliance. The 0034.3112 offers the highest inventory (5998 pcs) and includes CCC, cURus, and VDE certifications. Approval agency coverage differs from Littelfuse parts; verify compliance requirements for your specific application.

OptiFuse TSC-315MA: This part meets all parametric requirements with cULus and UL 248 certifications. Breaking capacity is 100 A, positioned between SCHURTER and Littelfuse 219XA series parts.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 0219.315TXAP with any of the listed parts?

A: Yes. All listed parts match the critical parameters: 315 mA current rating, 250 V AC voltage rating, slow blow response time, 5mm x 20mm package, and -55°C to 125°C operating temperature range. Physical form factor and holder compatibility are identical.

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

A: Both series meet all substitution criteria. The primary difference is breaking capacity: 219XA series (0219.315TXAP, 0219.315MXAP) has 150 A breaking capacity, while 218 series parts have 35 A. Melting I²t values are also slightly different (1.23 vs. 1.11). Select based on your circuit protection requirements.

Q: Are SCHURTER parts fully compatible with Littelfuse parts?

A: Yes, for the specified electrical and mechanical parameters. SCHURTER parts (0034.3112, 0034.5612.11, 0034.5708.11) are parametric equivalents meeting all core requirements. Approval agency certifications differ; verify that SCHURTER certifications (cURus, VDE, CCC) satisfy your application standards.

Q: What does "Slow Blow" response time mean?

A: Slow blow fuses tolerate temporary current surges and only open when sustained overcurrent is detected. All listed parts have this characteristic, ensuring consistent protection behavior across substitutions.

Q: Does package size affect substitution?

A: No. All parts use the identical 5mm x 20mm glass cartridge form factor and require the same holder type. Physical installation is interchangeable.

Q: Which part has the best inventory availability?

A: The Littelfuse 0218.315MXP has the highest inventory at 8839 pcs, followed by SCHURTER 0034.3112 at 5998 pcs. Both are parametric equivalents suitable for immediate procurement.

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