Littelfuse 0219.630TXAP Equivalent & Substitute Parts

Part Overview

The Littelfuse 0219.630TXAP is a 630 mA, 250 V AC/DC slow-blow glass cartridge fuse in 5mm x 20mm form factor. This fuse requires a holder for installation and is designed for circuit protection in industrial and commercial applications. The part is active in production with full compliance to multiple international standards including UL, CE, CSA, VDE, CCC, and SEMKO. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical dimensions, and functional performance parameters.

Key Parameters

Parameter	Value
Current Rating	630 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
DC Cold Resistance	0.275 Ohms
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Current Rating: 630 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)
Operating Temperature Range: -55°C ~ 125°C (exact match required)

Substitute parts are grouped into two categories:

Littelfuse Series Equivalents (0213.630MXP, 0218.630HXP, 0218.630MXP, 0218.630TXP, 0219.630MXAP, 0618.630MXP): These parts share identical electrical and mechanical specifications with the main part. Differences exist in breaking capacity and melting I²t values, which do not affect substitution eligibility for standard circuit protection applications.

Cross-Manufacturer Equivalents (SCHURTER 0034.3115, OptiFuse TSC-630MA, OptiFuse TSD-630MA): These parts meet all critical substitution parameters from different manufacturers. The SCHURTER 0034.2514 is excluded due to medium-blow response time, which differs from the required slow-blow characteristic.

Parameter Comparison

Part Number	Manufacturer	Current Rating	Voltage (AC)	Response Time	Package	Breaking Capacity @ Rated Voltage	Melting I²t	Operating Temperature	DC Cold Resistance
0219.630TXAP	Littelfuse Inc.	630 mA	250 V	Slow Blow	5mm x 20mm	150A	4.82	-55°C ~ 125°C	0.275 Ohms
0213.630MXP	Littelfuse Inc.	630 mA	250 V	Slow Blow	5mm x 20mm	35A	4.8	-55°C ~ 125°C	0.275 Ohms
0218.630HXP	Littelfuse Inc.	630 mA	250 V	Slow Blow	5mm x 20mm	35A	4.675	-55°C ~ 125°C	0.275 Ohms
0218.630MXP	Littelfuse	630 mA	250 V	Slow Blow	5mm x 20mm	35A	4.675	-55°C ~ 125°C	0.275 Ohms
0218.630TXP	Littelfuse Inc.	630 mA	250 V	Slow Blow	5mm x 20mm	35A	4.675	-55°C ~ 125°C	0.275 Ohms
0219.630MXAP	Littelfuse Inc.	630 mA	250 V	Slow Blow	5mm x 20mm	150A	4.82	-55°C ~ 125°C	0.275 Ohms
0618.630MXP	Littelfuse Inc.	630 mA	250 V	Slow Blow	5mm x 20mm	35A	4.675	-55°C ~ 125°C	0.275 Ohms
0034.3115	SCHURTER Inc.	630 mA	250 V	Slow Blow	5mm x 20mm	35A	4.35	-55°C ~ 125°C	Not specified
TSC-630MA	OptiFuse	630 mA	250 V	Slow Blow	5mm x 20mm	100A	0.566	-55°C ~ 125°C	Not specified
TSD-630MA	OptiFuse	630 mA	250 V	Slow Blow	5mm x 20mm	35A	1.583	-55°C ~ 125°C	Not specified

Engineering Selection Recommendations

All listed substitute parts are active products with ROHS3 compliance. Selection between equivalents should be based on certification requirements for the target application:

For applications requiring UL certification: 0219.630TXAP, 0213.630MXP, 0218.630HXP, 0218.630MXP, 0218.630TXP, 0219.630MXAP, and TSC-630MA all carry UL approval.

For applications requiring CSA certification: All Littelfuse parts (0219.630TXAP, 0213.630MXP, 0218.630HXP, 0218.630MXP, 0218.630TXP, 0219.630MXAP, 0618.630MXP) and SCHURTER 0034.3115 carry CSA approval.

For applications requiring VDE certification: All listed parts carry VDE approval.

For applications requiring CCC certification: All Littelfuse parts and SCHURTER 0034.3115 carry CCC approval. OptiFuse parts do not carry CCC certification.

For applications requiring SEMKO certification: All Littelfuse parts and SCHURTER 0034.3115 carry SEMKO approval.

The 0219.630TXAP and 0219.630MXAP offer higher breaking capacity (150A) compared to other Littelfuse equivalents (35A), which may be advantageous in high-fault-current environments. The SCHURTER 0034.3115 and OptiFuse alternatives provide equivalent protection with different melting I²t characteristics suitable for specific circuit designs.

Frequently Asked Questions (FAQ)

Q: Can I substitute 0219.630TXAP with 0213.630MXP? A: Yes. Both parts share identical current rating (630 mA), voltage rating (250 V AC), response time (slow blow), package dimensions (5mm x 20mm), and operating temperature range (-55°C ~ 125°C). The difference in breaking capacity (150A vs. 35A) does not prevent substitution for standard applications.

Q: What is the difference between Littelfuse series 218, 219, and 618? A: These represent different product lines within Littelfuse's cartridge fuse portfolio. All listed variants meet the substitution criteria for 630 mA, 250 V AC, slow-blow operation in 5mm x 20mm packages. Series selection should be based on availability and certification requirements for your specific application.

Q: Can I use OptiFuse TSC-630MA or TSD-630MA as a direct replacement? A: Yes, both OptiFuse parts meet all critical electrical and mechanical parameters. However, verify that your application does not require CCC certification, as OptiFuse parts do not carry this approval. Melting I²t values differ from Littelfuse equivalents, which may affect circuit behavior in edge-case scenarios.

Q: Why is SCHURTER 0034.2514 not listed as a substitute? A: The 0034.2514 has a medium-blow response time, whereas the 0219.630TXAP requires slow-blow characteristics. This fundamental difference in response time makes it unsuitable for direct substitution.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance status.

Q: What certifications does the main part carry? A: The 0219.630TXAP carries CCC, CE, CSA, SEMKO, UL, and VDE certifications. When selecting a substitute, ensure the replacement part carries certifications required by your application's regulatory framework.

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