Littelfuse 0219001.MXAF5P Glass Cartridge Fuse 1A 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0219001.MXAF5P is a 1A 250VAC glass cartridge fuse in 5x20mm form factor, classified as a slow-blow fuse cartridge requiring a holder for installation. This component is Active in product status and widely used in industrial and consumer electronics for circuit protection. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical dimensions, and regulatory compliance certifications to ensure direct functional replacement in applications where the original part may be unavailable or where alternative sourcing is required.

Key Parameters

Parameter	Value
Manufacturer Part Number	0219001.MXAF5P
Manufacturer	Littelfuse
Series	219XA
Current Rating	1 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	19.2
Operating Temperature Range	-55°C ~ 125°C
DC Cold Resistance	0.1165 Ohms
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the 0219001.MXAF5P are grouped based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

Current Rating: 1 A (exact match required)
Voltage Rating (AC): 250 V (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Response Time: Slow Blow (exact match required)
Mounting Type: Requires Holder (exact match required)

Secondary Considerations:

Breaking Capacity @ Rated Voltage: Minimum 35A acceptable; 150A preferred for enhanced protection margin
Melting I²t: Range 6.73 to 19.2 acceptable based on application thermal requirements
DC Cold Resistance: Variations acceptable within 0.0613 to 0.2965 Ohms
Regulatory Certifications: Must include CCC, CE, CSA, PSE, SEMKO, UL, VDE as minimum

Substitute parts are divided into two functional groups: Series 219XA and 213 parts (150A breaking capacity, Melting I²t 19.2) provide direct equivalence with identical electrical performance; Series 218 and 239 parts (35A breaking capacity, lower Melting I²t values) provide functional substitution with reduced breaking capacity suitable for lower-fault-current applications.

Parameter Comparison

Part Number	Series	Current (A)	Voltage (V AC)	Response Time	Package	Breaking Capacity (A)	Melting I²t	DC Resistance (Ω)	Inventory (Pcs)
0219001.MXAF5P	219XA	1	250	Slow Blow	5x20mm	150	19.2	0.1165	885
0219001.MXABP	219XA	1	250	Slow Blow	5x20mm	150	19.2	0.1165	1426
0219001.MXAP	219XA	1	250	Slow Blow	5x20mm	150	19.2	0.1165	2488
0213001.MXP	213	1	250	Slow Blow	5x20mm	35	19.2	0.1165	10400
0213001.TXP	213	1	250	Slow Blow	5x20mm	35	19.2	0.1165	783
0218001.HXP	218	1	250	Slow Blow	5x20mm	35	6.73	0.0613	6258
0218001.MXP	218	1	250	Slow Blow	5x20mm	35	6.73	0.0613	17900
0218001.TXP	218	1	250	Slow Blow	5x20mm	35	6.73	0.0613	772
0218001.VXP	218	1	250	Slow Blow	5x20mm	35	6.73	0.0613	836
0239001.HXP	239	1	250	Slow Blow	5x20mm	35	11.295	0.2965	835
0239001.MXP	239	1	250	Slow Blow	5x20mm	35	11.295	0.2965	1020

Engineering Selection Recommendations

Direct Equivalents (Preferred for 1:1 Replacement):

Series 219XA parts (0219001.MXABP, 0219001.MXAP) are direct functional equivalents to 0219001.MXAF5P. All three parts share identical electrical parameters: 1A current rating, 250V AC voltage rating, 150A breaking capacity, 19.2 Melting I²t, and 0.1165 Ohms DC cold resistance. These parts carry the same regulatory certifications (CCC, CE, CSA, PSE, SEMKO, UL, VDE) and are suitable for direct substitution without circuit redesign or thermal analysis.

Functional Substitutes (Series 213):

Series 213 parts (0213001.MXP, 0213001.TXP) maintain identical electrical performance to the main part with 19.2 Melting I²t and 0.1165 Ohms resistance. The reduced breaking capacity of 35A versus 150A is acceptable in applications where fault current does not exceed 35A. These parts are suitable for general-purpose circuit protection in consumer and industrial equipment with lower fault-current availability.

Functional Substitutes (Series 218):

Series 218 parts (0218001.HXP, 0218001.MXP, 0218001.TXP, 0218001.VXP) provide functional substitution with reduced Melting I²t of 6.73 and lower DC cold resistance of 0.0613 Ohms. These faster-acting characteristics suit applications requiring more sensitive overcurrent detection. Breaking capacity is 35A. Regulatory certifications include CCC, CE, CSA, K-MARK, PSE, SEMKO, UL, VDE.

Functional Substitutes (Series 239):

Series 239 parts (0239001.HXP, 0239001.MXP) offer intermediate thermal response with Melting I²t of 11.295 and higher DC cold resistance of 0.2965 Ohms. Breaking capacity is 35A. Regulatory certifications are limited to CE, CSA, KC, PSE, UL. These parts are suitable for applications where UL and CSA compliance is primary and CCC/VDE certifications are not required.

Inventory Availability:

0218001.MXP (Series 218) offers the highest inventory level at 17,900 pieces, followed by 0213001.MXP (Series 213) at 10,400 pieces. These options provide optimal supply chain continuity for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Can Series 218 parts replace Series 219XA parts directly?

A: Series 218 parts are functionally compatible for applications where fault current does not exceed 35A. The primary difference is reduced breaking capacity (35A vs. 150A) and faster thermal response (Melting I²t 6.73 vs. 19.2). If the application requires 150A breaking capacity or slower thermal response, Series 219XA or 213 parts are required.

Q: What is the significance of Melting I²t in fuse selection?

A: Melting I²t determines the thermal energy required to melt the fuse element. Lower values (6.73) indicate faster response to overcurrent; higher values (19.2) indicate slower response suitable for circuits with inrush current. Selection depends on application requirements for protection speed versus tolerance for transient current spikes.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements for electronic components.

Q: What regulatory certifications are mandatory for my application?

A: Certification requirements depend on end-product application and target markets. Series 219XA and 213 parts include CCC, CE, CSA, PSE, SEMKO, UL, VDE certifications. Series 218 parts include CCC, CE, CSA, K-MARK, PSE, SEMKO, UL, VDE. Series 239 parts include CE, CSA, KC, PSE, UL. Verify your application's specific certification requirements before selection.

Q: Can I use a 35A breaking capacity fuse in an application designed for 150A?

A: No. Breaking capacity defines the maximum fault current the fuse can safely interrupt without rupturing the fuse holder or creating hazardous conditions. Using a lower breaking capacity fuse in a higher fault-current environment creates safety risk. Confirm your application's available fault current before selecting a substitute part.

Q: Is DC cold resistance variation significant between substitute parts?

A: DC cold resistance variation (0.0613 to 0.2965 Ohms) affects voltage drop across the fuse during normal operation. In low-current applications, this variation is negligible. In high-current or precision measurement circuits, verify that the selected part's resistance meets circuit design specifications.

Q: What is the difference between MXP, MXA, TXP, and HXP designations?

A: These designations represent different internal fuse element designs and thermal characteristics within the same series. All maintain the same current rating, voltage rating, and package dimensions. Selection between these variants depends on specific thermal response and breaking capacity requirements for your application.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message