Littelfuse 0219002.TXAP Glass Cartridge Fuse 2A 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0219002.TXAP is a 2 A, 250 V AC/DC slow-blow glass cartridge fuse in 5mm x 20mm form factor, requiring a fuse holder for installation. This component is classified as Active and maintains full compliance with international safety standards including UL, CE, CSA, VDE, CCC, PSE, and SEMKO certifications. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, response characteristics, and regulatory approvals to ensure direct functional interchangeability in circuit protection applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	0219002.TXAP
Manufacturer	Littelfuse Inc.
Series	219XA
Current Rating	2 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Slow Blow
Package / Case	5mm x 20mm
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	150 A
Melting I²t	92.705
DC Cold Resistance	0.0452 Ohms
Operating Temperature Range	-55°C to 125°C
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the 0219002.TXAP are grouped based on strict equivalence of the following critical parameters:

Current Rating: 2 A (mandatory match)
Voltage Rating: 250 V AC (mandatory match)
Package / Case: 5mm x 20mm (mandatory match)
Fuse Type: Cartridge, Glass (mandatory match)
Response Time: Slow Blow (mandatory match)
Mounting Type: Requires Holder (mandatory match)
Operating Temperature Range: -55°C to 125°C (mandatory match)

Substitute parts are further categorized by Breaking Capacity and Melting I²t characteristics, which define the fuse's thermal and electrical performance envelope. Parts within the same grouping maintain functional equivalence for direct substitution in circuit protection applications.

Parameter Comparison

Part Number	Series	Current Rating	Voltage Rating (AC)	Response Time	Package / Case	Breaking Capacity @ Rated Voltage	Melting I²t	DC Cold Resistance (Ohms)	Inventory (Pcs)
0219002.TXAP	219XA	2 A	250 V	Slow Blow	5mm x 20mm	150 A	92.705	0.0452	893
0213002.MXP	213	2 A	250 V	Slow Blow	5mm x 20mm	35 A	92.705	0.0452	17911
0213002.TXP	213	2 A	250 V	Slow Blow	5mm x 20mm	35 A	92.705	0.0452	1142
0218002.MXP	218	2 A	250 V	Slow Blow	5mm x 20mm	35 A	14.45	0.0293	9616
0218002.TXP	218	2 A	250 V	Slow Blow	5mm x 20mm	35 A	14.45	0.0293	1032
0218002.VXP	218	2 A	250 V	Slow Blow	5mm x 20mm	35 A	14.45	0.0293	1079
0219002.MXABP	219XA	2 A	250 V	Slow Blow	5mm x 20mm	150 A	92.705	0.0452	1970
0219002.MXAP	219XA	2 A	250 V	Slow Blow	5mm x 20mm	150 A	92.705	0.0452	1160
0239002.HXP	239	2 A	250 V	Slow Blow	5mm x 20mm	100 A	50.585	0.0943	2400
0239002.MXP	239	2 A	250 V	Slow Blow	5mm x 20mm	100 A	50.585	0.0943	1610
0239002.TXP	239	2 A	250 V	Slow Blow	5mm x 20mm	100 A	50.585	0.0943	719

Engineering Selection Recommendations

Substitute selection for the 0219002.TXAP must be based on the following criteria:

Group 1: Direct Equivalents (219XA Series, 150 A Breaking Capacity) The 0219002.MXABP and 0219002.MXAP are direct functional equivalents to the 0219002.TXAP. All three parts share identical electrical ratings, thermal characteristics (Melting I²t: 92.705), DC cold resistance (0.0452 Ohms), and breaking capacity (150 A). These parts maintain full compliance with CCC, CE, CSA, PSE, SEMKO, UL, and VDE certifications and are suitable for direct one-to-one replacement.

Group 2: Parametric Equivalents (213 Series, 35 A Breaking Capacity) The 0213002.MXP and 0213002.TXP are parametric equivalents with matching electrical ratings and thermal characteristics (Melting I²t: 92.705, DC cold resistance: 0.0452 Ohms). These parts differ in breaking capacity (35 A versus 150 A). Selection from this group requires confirmation that the application's fault current does not exceed 35 A. Both parts hold BSI, CCC, CE, CSA, PSE, SEMKO, UR, and VDE certifications.

Group 3: Parametric Equivalents (218 Series, 35 A Breaking Capacity) The 0218002.MXP, 0218002.TXP, and 0218002.VXP are parametric equivalents with lower thermal characteristics (Melting I²t: 14.45, DC cold resistance: 0.0293 Ohms) and reduced breaking capacity (35 A). These parts are suitable only when the application requires faster thermal response and lower fault current handling. Certifications include CCC, CE, CSA, K-MARK or KC, PSE, SEMKO, UL, and VDE.

Group 4: Parametric Equivalents (239 Series, 100 A Breaking Capacity) The 0239002.HXP, 0239002.MXP, and 0239002.TXP are parametric equivalents with intermediate thermal characteristics (Melting I²t: 50.585, DC cold resistance: 0.0943 Ohms) and 100 A breaking capacity. These parts are suitable for applications requiring intermediate fault current handling. Certifications include CE, CSA, KC, PSE, and UL.

All substitute parts maintain the same operating temperature range (-55°C to 125°C), RoHS3 compliance, and 5mm x 20mm mechanical form factor as the primary part.

Frequently Asked Questions (FAQ)

Q: Can I substitute a 0213002.TXP for the 0219002.TXAP? A: The 0213002.TXP is a parametric equivalent with identical electrical ratings (2 A, 250 V AC), response time (slow blow), and thermal characteristics (Melting I²t: 92.705). The primary difference is breaking capacity: 35 A versus 150 A. Substitution is permissible only if the application's maximum fault current does not exceed 35 A. Both parts require a fuse holder and operate across the same temperature range.

Q: What is the difference between the 219XA series and the 218 series? A: Both series maintain identical electrical ratings (2 A, 250 V AC) and mechanical dimensions (5mm x 20mm). The 219XA series (0219002.TXAP, 0219002.MXABP, 0219002.MXAP) provides 150 A breaking capacity and higher thermal mass (Melting I²t: 92.705). The 218 series (0218002.MXP, 0218002.TXP, 0218002.VXP) provides 35 A breaking capacity and lower thermal mass (Melting I²t: 14.45), resulting in faster response to overcurrent conditions. Selection depends on the application's fault current rating and required response speed.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts, including the primary part 0219002.TXAP, are RoHS3 compliant and REACH unaffected.

Q: What certifications apply to the 0239002 series? A: The 0239002 series (0239002.HXP, 0239002.MXP, 0239002.TXP) holds CE, CSA, KC, PSE, and UL certifications. This series does not include CCC or VDE certifications, which may be relevant for specific regional applications.

Q: Can I use a 0218002.MXP in place of the 0219002.TXAP? A: The 0218002.MXP is a parametric equivalent with matching electrical ratings and mechanical form factor. However, it differs in breaking capacity (35 A versus 150 A) and thermal response (Melting I²t: 14.45 versus 92.705). Substitution is permissible only if the application's maximum fault current does not exceed 35 A and faster thermal response is acceptable or required.

Q: Do all substitute parts require the same fuse holder? A: Yes. All listed parts maintain the 5mm x 20mm mechanical form factor and require a compatible fuse holder. No holder modifications are necessary when substituting between listed parts.

Q: What is the significance of DC Cold Resistance in fuse selection? A: DC cold resistance affects voltage drop across the fuse during normal operation. The 0219002.TXAP and equivalent 213 series parts have 0.0452 Ohms resistance, while the 218 series has 0.0293 Ohms and the 239 series has 0.0943 Ohms. Lower resistance reduces heat generation during normal operation; higher resistance may be acceptable in applications with lower continuous current or where thermal management is less critical.

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