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

Part Overview

The Littelfuse 0219002.MXAP is a 2A 250VAC glass cartridge fuse in 5x20mm form factor, classified as a slow-blow fuse cartridge requiring a holder for installation. This component is Active status and widely used in power distribution and circuit protection applications. Substitute parts become necessary due to inventory availability, regional compliance requirements, or specific breaking capacity and thermal response characteristics needed for particular circuit designs.

Key Parameters

Parameter	Value
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	150A
Melting I²t	92.705
Operating Temperature Range	-55°C ~ 125°C
DC Cold Resistance	0.0452 Ohms
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 0219002.MXAP is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

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

Secondary Consideration Parameters:

Breaking Capacity @ Rated Voltage: May vary (150A, 100A, or 35A)
Melting I²t: May vary (92.705, 50.585, or 14.45)
DC Cold Resistance: May vary (0.0452, 0.0943, or 0.0293 Ohms)
Approval Agencies: May vary based on regional requirements

All substitute parts listed meet the primary criteria. Variations in breaking capacity, melting I²t, and DC cold resistance reflect different thermal and electrical response characteristics suitable for different circuit protection scenarios while maintaining the same nominal fuse rating and physical form factor.

Parameter Comparison

Part Number	Manufacturer	Series	Current (A)	Voltage (V)	Response	Package	Breaking Capacity (A)	Melting I²t	DC Resistance (Ω)	Inventory (Pcs)
0219002.MXAP	Littelfuse	219XA	2	250	Slow Blow	5x20mm	150	92.705	0.0452	1160
0213002.MXP	Littelfuse	213	2	250	Slow Blow	5x20mm	35	92.705	0.0452	17911
0213002.TXP	Littelfuse	213	2	250	Slow Blow	5x20mm	35	92.705	0.0452	1142
0218002.MXP	Littelfuse	218	2	250	Slow Blow	5x20mm	35	14.45	0.0293	9616
0218002.TXP	Littelfuse	218	2	250	Slow Blow	5x20mm	35	14.45	0.0293	1032
0219002.MXABP	Littelfuse	219XA	2	250	Slow Blow	5x20mm	150	92.705	0.0452	1970
0239002.HXP	Littelfuse	239	2	250	Slow Blow	5x20mm	100	50.585	0.0943	2400
0239002.MXP	Littelfuse	239	2	250	Slow Blow	5x20mm	100	50.585	0.0943	1610
0239002.TXP	Littelfuse	239	2	250	Slow Blow	5x20mm	100	50.585	0.0943	719
0239002.VXP	Littelfuse	239	2	250	Slow Blow	5x20mm	100	50.585	0.0943	931
0618002.MXP	Littelfuse	618	2	250	Slow Blow	5x20mm	35	14.45	0.0293	1607

Engineering Selection Recommendations

Direct Equivalents (Same Breaking Capacity & Thermal Response):

0219002.MXABP: Identical series (219XA), breaking capacity (150A), and melting I²t (92.705). All primary certifications match. Suitable for direct replacement in applications requiring 150A breaking capacity.

High Breaking Capacity Alternatives (100A):

0239002.HXP, 0239002.MXP, 0239002.TXP, 0239002.VXP: Series 239 fuses with 100A breaking capacity and intermediate melting I²t (50.585). Appropriate for circuits requiring higher fault current handling than 35A but lower than 150A. All variants carry CE, CSA, KC, PSE, and UL certifications.

Standard Breaking Capacity Alternatives (35A):

0213002.MXP, 0213002.TXP: Series 213 with 35A breaking capacity and matching melting I²t (92.705). Carry BSI, CCC, CE, CSA, PSE, SEMKO, UR, and VDE certifications. Highest inventory availability (17911 pcs for MXP variant).
0218002.MXP, 0218002.TXP: Series 218 with 35A breaking capacity and lower melting I²t (14.45). Carry CCC, CE, CSA, K-MARK/KC, PSE, SEMKO, UL, and VDE certifications. Faster thermal response than 213 series.
0618002.MXP: Series 618 with 35A breaking capacity and melting I²t (14.45). Carries CCC, CE, CSA, UR, and VDE certifications.

Selection Basis:

All parts maintain Active product status and ROHS3 compliance
Breaking capacity selection depends on circuit fault current requirements
Melting I²t variation affects thermal response speed; lower values indicate faster response
Certification alignment with regional requirements (UL for North America, CE for Europe, CCC for China, PSE for Japan)

Frequently Asked Questions (FAQ)

Q: Can I substitute a 35A breaking capacity fuse for the 0219002.MXAP (150A)? A: Substitution is electrically valid based on all primary parameters (current, voltage, response time, package). However, the 150A breaking capacity of the original part provides higher fault current handling. Use 35A alternatives only if your circuit's maximum fault current does not exceed 35A. Verify circuit requirements before substitution.

Q: What is the difference between melting I²t values of 92.705, 50.585, and 14.45? A: Melting I²t determines the thermal energy required to melt the fuse element. Lower values (14.45) indicate faster response to overcurrent; higher values (92.705) indicate slower response. The 0219002.MXAP is classified as slow-blow with I²t of 92.705. Series 239 (I²t 50.585) provides intermediate response, while Series 218 and 618 (I²t 14.45) provide faster response. Select based on circuit inrush current tolerance.

Q: Are all substitute parts physically identical in the 5x20mm package? A: Yes. All listed substitutes share the identical 5x20mm form factor and require the same holder. Physical installation is interchangeable. Electrical performance differences stem from internal element design, not external dimensions.

Q: Which substitute has the highest inventory availability? A: The 0213002.MXP (Series 213, 35A breaking capacity) has the highest inventory at 17911 pieces. This part maintains the same melting I²t (92.705) and DC cold resistance (0.0452 Ohms) as the original 0219002.MXAP, differing only in breaking capacity.

Q: Do all substitutes carry the same certifications as the original part? A: No. The original 0219002.MXAP carries CCC, CE, CSA, PSE, SEMKO, UL, and VDE certifications. Substitute parts carry varying certification combinations. Verify that your selected substitute meets the certifications required for your application's regional market (e.g., UL for North America, CE for Europe, CCC for China).

Q: Can I use a fuse with lower DC cold resistance (0.0293 Ω) instead of 0.0452 Ω? A: Yes, from an electrical standpoint. Lower DC cold resistance (Series 218, 618) results in less voltage drop across the fuse during normal operation. This is generally beneficial for power efficiency. However, verify that your circuit design does not depend on the specific resistance characteristics of the original part.

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