Littelfuse 0219005.TXAP Glass Cartridge Fuse 5A 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0219005.TXAP is a 5 A, 250 V AC/DC slow-blow glass cartridge fuse in 5mm x 20mm form factor. This component is classified as Active product status and is designed for applications requiring overcurrent protection in AC and DC circuits. The fuse requires a holder for installation and is suitable for industrial and commercial equipment. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, response characteristics, and regulatory compliance certifications.

Key Parameters

Parameter	Value
Current Rating	5 A
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
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 0219005.TXAP are grouped into two categories based on breaking capacity and melting I²t characteristics:

Category 1: High Breaking Capacity (150A @ Rated Voltage) Parts within this category maintain identical breaking capacity and melting I²t values (544) as the main part. These are direct parametric equivalents suitable for applications requiring the same fault protection level.

Category 2: Standard Breaking Capacity (50A @ Rated Voltage) Parts within this category have reduced breaking capacity (50A) and lower melting I²t values (111 or 314). These are parametric equivalents suitable for applications with lower fault current requirements.

All substitute parts share the following matching parameters with the main part:

Current Rating: 5 A
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
RoHS Status: ROHS3 Compliant

Parameter Comparison

Part Number	Manufacturer	Series	Current (A)	Voltage (V AC)	Response	Package	Breaking Capacity (A)	Melting I²t	DC Cold Resistance (Ω)	Inventory (Pcs)
0219005.TXAP	Littelfuse Inc.	219XA	5	250	Slow Blow	5x20mm	150	544	0.0117	832
0219005.MXABP	Littelfuse Inc.	219XA	5	250	Slow Blow	5x20mm	150	544	0.0117	823
0219005.MXAP	Littelfuse Inc.	219XA	5	250	Slow Blow	5x20mm	150	544	0.0117	1675
0213005.MXBP	Littelfuse Inc.	213	5	250	Slow Blow	5x20mm	50	314	0.0116	1727
0213005.MXP	Littelfuse Inc.	213	5	250	Slow Blow	5x20mm	50	314	0.0116	3700
0213005.TXP	Littelfuse Inc.	213	5	250	Slow Blow	5x20mm	50	314	0.0116	1007
0218005.HXP	Littelfuse Inc.	218	5	250	Slow Blow	5x20mm	50	111	0.0104	1900
0218005.MXP	Littelfuse Inc.	218	5	250	Slow Blow	5x20mm	50	111	0.0104	42700
0218005.TXP	Littelfuse Inc.	218	5	250	Slow Blow	5x20mm	50	111	0.0104	1152
0218005.VXP	Littelfuse Inc.	218	5	250	Slow Blow	5x20mm	50	111	0.0104	704
0618005.MXP	Littelfuse	618	5	250	Slow Blow	5x20mm	50	111	0.0104	34200

Engineering Selection Recommendations

Direct Equivalents (Category 1 - 150A Breaking Capacity): The 0219005.MXABP and 0219005.MXAP are direct parametric equivalents to the 0219005.TXAP. All three parts are from the 219XA series with identical electrical and mechanical specifications, including 150A breaking capacity and 544 melting I²t. These parts carry the same regulatory certifications (CCC, CE, CSA, PSE, SEMKO, UL, VDE) and are suitable for direct substitution in applications where the original part is specified.

Alternative Equivalents (Category 2 - 50A Breaking Capacity): The 0213005 series (MXBP, MXP, TXP), 0218005 series (HXP, MXP, TXP, VXP), and 0618005.MXP are parametric equivalents with reduced breaking capacity (50A) and lower melting I²t values. These parts are suitable for applications with lower fault current requirements. The 0218005 series and 0618005.MXP have the lowest melting I²t (111), indicating faster response to fault conditions compared to the 0213005 series (314). Selection between these alternatives depends on the specific fault current environment and protection requirements of the application.

All substitute parts maintain Active product status and ROHS3 compliance. Regulatory certifications vary by series; verify that the selected substitute meets all required compliance standards for the target application.

Frequently Asked Questions (FAQ)

Q: Can I use a 50A breaking capacity fuse as a substitute for the 0219005.TXAP which has 150A breaking capacity?

A: Substitution depends on the application's fault current environment. The 0219005.TXAP is rated for 150A breaking capacity, suitable for circuits with higher fault currents. The 0213005 and 0218005 series with 50A breaking capacity are suitable only for applications with lower fault currents. Verify that the substitute part's breaking capacity meets or exceeds the maximum fault current in your circuit.

Q: What is the difference between melting I²t values of 544, 314, and 111?

A: Melting I²t is a measure of the fuse's thermal energy absorption capacity. Higher I²t values indicate slower response to overcurrent conditions, while lower I²t values indicate faster response. The 0219005.TXAP with I²t of 544 provides slower protection compared to the 0218005 and 0618005 series with I²t of 111. Select based on the circuit's inrush current characteristics and protection speed requirements.

Q: Are all substitute parts mechanically compatible with the same holder?

A: Yes. All substitute parts share the identical 5mm x 20mm package dimension and require a holder for installation, matching the mechanical requirements of the 0219005.TXAP. No holder modification is necessary when substituting between these parts.

Q: Which substitute part has the highest inventory availability?

A: The 0218005.MXP has the highest inventory at 42,700 pieces, followed by 0618005.MXP at 34,200 pieces. Both are suitable alternatives for applications with 50A breaking capacity requirements.

Q: Do all substitute parts have the same regulatory certifications?

A: No. The 0219005.TXAP carries CCC, CE, CSA, PSE, SEMKO, UL, and VDE certifications. The 0213005 series includes BSI and UR certifications in addition to the above. The 0218005 series includes K-MARK and KC certifications. The 0618005.MXP carries CCC, CE, CSA, UR, and VDE certifications. Verify that the selected substitute meets all required compliance standards for your application's regulatory environment.

Q: What is the operating temperature range for all these fuses?

A: All substitute parts operate within the same temperature range as the 0219005.TXAP: -55°C to 125°C. This parameter is consistent across all equivalent and substitute parts listed.

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