Littelfuse 0219.630MXABP Equivalent & Substitute Parts

Part Overview

The Littelfuse 0219.630MXABP is a 630 mA, 250 V AC/DC slow-blow glass fuse cartridge in 5mm x 20mm form factor. This component is designed for circuit protection in applications requiring cartridge-style fuse holders. The part is active in production with full inventory availability. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, response characteristics, and regulatory compliance to ensure direct functional interchangeability in protected circuits.

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 to 125°C
DC Cold Resistance	0.275 Ohms
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria applied strictly to the provided parameters:

Primary Matching Criteria:

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)
Mounting Type: Requires Holder (exact match required)

Secondary Compatibility Factors:

Operating Temperature Range: -55°C to 125°C or wider
DC Cold Resistance: 0.275 Ohms (nominal tolerance acceptable)
RoHS3 Compliance: Required for environmental standards alignment

Parts are grouped into two categories:

Littelfuse Series Equivalents (0213.630MXP, 0218.630HXP, 0218.630MXP, 0218.630TXP, 0219.630MXAP, 0618.630MXP): All match primary criteria with identical electrical and mechanical specifications. Differences exist in Breaking Capacity and Melting I²t values, which do not affect substitution eligibility for the specified 630 mA, 250 V AC application.

Cross-Manufacturer Equivalents (SCHURTER 0034.3115, OptiFuse TSC-630MA, OptiFuse TSD-630MA): Match all primary criteria and operating temperature range. These parts provide functional equivalence across different manufacturer product lines.

Non-Equivalent Part (SCHURTER 0034.2514): Does not qualify as a substitute due to Medium Blow response time (not Slow Blow) and reduced operating temperature range (-40°C to 85°C).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (mA)	Voltage AC (V)	Response Time	Package	Breaking Capacity @ Rated Voltage (A)	Melting I²t	Operating Temperature (°C)	DC Cold Resistance (Ohms)	RoHS Status
0219.630MXABP	Littelfuse Inc.	630	250	Slow Blow	5mm x 20mm	150	4.82	-55 to 125	0.275	ROHS3
0213.630MXP	Littelfuse Inc.	630	250	Slow Blow	5mm x 20mm	35	4.8	-55 to 125	0.275	ROHS3
0218.630HXP	Littelfuse Inc.	630	250	Slow Blow	5mm x 20mm	35	4.675	-55 to 125	0.275	ROHS3
0218.630MXP	Littelfuse	630	250	Slow Blow	5mm x 20mm	35	4.675	-55 to 125	0.275	ROHS3
0218.630TXP	Littelfuse Inc.	630	250	Slow Blow	5mm x 20mm	35	4.675	-55 to 125	0.275	ROHS3
0219.630MXAP	Littelfuse Inc.	630	250	Slow Blow	5mm x 20mm	150	4.82	-55 to 125	0.275	ROHS3
0618.630MXP	Littelfuse Inc.	630	250	Slow Blow	5mm x 20mm	35	4.675	-55 to 125	0.275	ROHS3
0034.3115	SCHURTER Inc.	630	250	Slow Blow	5mm x 20mm	35	4.35	-55 to 125	Not specified	ROHS3
TSC-630MA	OptiFuse	630	250	Slow Blow	5mm x 20mm	100	0.566	-55 to 125	Not specified	ROHS3
TSD-630MA	OptiFuse	630	250	Slow Blow	5mm x 20mm	35	1.583	-55 to 125	Not specified	ROHS3

Engineering Selection Recommendations

All listed substitute parts meet the core electrical and mechanical requirements for direct replacement of the 0219.630MXABP in 630 mA, 250 V AC/DC slow-blow applications. Selection among equivalents should be based on:

Regulatory Compliance: The main part carries CCC, CE, CSA, SEMKO, UL, and VDE approvals. Littelfuse series equivalents maintain equivalent or expanded certification coverage. SCHURTER 0034.3115 holds CCC, cURus, and VDE certifications. OptiFuse parts carry cULus/UL 248 (TSC-630MA) and IEC 60127 (TSD-630MA) approvals. Verify that selected substitute meets all required certifications for the target application and market.

Availability: Inventory levels vary across part numbers. SCHURTER 0034.3115 offers the highest stock (10,758 pcs), followed by Littelfuse 0218.630MXP (2,443 pcs) and OptiFuse TSD-630MA (2,577 pcs).

Breaking Capacity Considerations: The main part and 0219.630MXAP feature 150 A breaking capacity. Other Littelfuse series and cross-manufacturer equivalents provide 35 A breaking capacity, with OptiFuse TSC-630MA at 100 A. Breaking capacity does not affect substitution eligibility but may influence performance in high-fault-current environments.

Product Status: All substitute parts are active in production with no obsolescence risk.

Frequently Asked Questions (FAQ)

Q: Can I substitute 0213.630MXP for 0219.630MXABP? A: Yes. Both parts share identical current rating (630 mA), voltage rating (250 V AC), response time (Slow Blow), package (5mm x 20mm), and operating temperature range (-55°C to 125°C). The difference in Breaking Capacity (35 A vs. 150 A) does not affect substitution eligibility for the specified 630 mA application.

Q: What is the difference between Littelfuse 219XA and 218 series fuses? A: Both series meet the 630 mA, 250 V AC, Slow Blow specification. The 219XA series (0219.630MXABP, 0219.630MXAP) provides 150 A breaking capacity, while the 218 series (0218.630HXP, 0218.630MXP, 0218.630TXP) provides 35 A breaking capacity. Series selection depends on application fault-current requirements.

Q: Can I use SCHURTER 0034.3115 as a substitute? A: Yes. The SCHURTER 0034.3115 matches all primary criteria: 630 mA current rating, 250 V AC voltage rating, Slow Blow response, 5mm x 20mm package, and -55°C to 125°C operating range. It holds CCC, cURus, and VDE certifications. Verify that these certifications satisfy your application requirements.

Q: Why is SCHURTER 0034.2514 not listed as a substitute? A: The 0034.2514 has a Medium Blow response time (not Slow Blow) and a reduced operating temperature range (-40°C to 85°C). These differences disqualify it from substitution for the 0219.630MXABP specification.

Q: Are OptiFuse TSC-630MA and TSD-630MA interchangeable with Littelfuse parts? A: Both OptiFuse parts match the 630 mA, 250 V AC, Slow Blow, 5mm x 20mm specification and -55°C to 125°C operating range. TSC-630MA carries cULus/UL 248 approval; TSD-630MA carries IEC 60127 approval. Confirm that the selected OptiFuse part's certifications align with your application and regional requirements before substitution.

Q: Does the difference in Melting I²t affect substitution? A: Melting I²t values vary across the listed parts (ranging from 0.566 to 4.82) but do not affect substitution eligibility for the 630 mA, 250 V AC application. This parameter influences thermal response characteristics but remains within acceptable tolerance for the specified current and voltage ratings.

Q: Can I mix different manufacturers in the same circuit? A: Yes, provided each part meets the 630 mA, 250 V AC, Slow Blow, 5mm x 20mm specification and required certifications. However, maintain consistency within a single fuse holder or circuit board design to ensure uniform thermal and electrical performance.

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