Equivalent & Substitute Parts for 0233003.MXW

Part Overview

The Littelfuse 0233003.MXW is a 3 A, 125 V AC/DC glass cartridge fuse with a 5mm x 20mm form factor, designed for applications requiring medium-blow response characteristics. This part is classified as obsolete and requires a holder for installation. Due to its obsolete status and limited availability compared to active alternatives, equivalent substitute parts are available from Littelfuse's current product lines that maintain the same electrical and mechanical specifications.

Key Parameters

Parameter	Value
Current Rating	3 A
Voltage Rating (AC)	125 V
Fuse Type	Cartridge, Glass
Package / Case	5mm x 20mm
Response Time	Medium Blow
Breaking Capacity @ Rated Voltage	10 kA
Operating Temperature Range	-55°C to 125°C
Mounting Type	Requires Holder

Substitute Part Grouping Explanation

Substitute parts for the 0233003.MXW are classified into two categories based on allowed electrical and mechanical parameters:

Category 1: Direct Parametric Equivalents (Requires Holder Mounting) These parts maintain identical mounting type, current rating, voltage rating, fuse type, package dimensions, response time, and breaking capacity. Substitutes in this category are: 0233003.MXBP, 0233003.MXF4P, 0233003.MXP, 0232003.MX125P, 0232003.MXF22125P, and 0232003.MXF5125P.

Category 2: Functional Equivalent (Through Hole Mounting) The part 0233003.MXEP maintains all electrical parameters but differs in mounting type (through hole vs. requires holder) and physical dimensions (5.80mm x 22.50mm vs. 5.20mm x 20.00mm). This part is suitable only when through-hole mounting is compatible with the application.

Substitution is determined by: current rating (3 A), voltage rating (125 V AC), fuse type (cartridge glass), response time (medium blow), breaking capacity (10 kA), and operating temperature range (-55°C to 125°C).

Parameter Comparison

Part Number	Manufacturer	Current Rating (A)	Voltage Rating (V AC)	Fuse Type	Package / Case	Response Time	Breaking Capacity (kA)	Mounting Type	Product Status	RoHS Status
0233003.MXW	Littelfuse Inc.	3	125	Cartridge, Glass	5mm x 20mm	Medium Blow	10	Requires Holder	Obsolete	RoHS Non-Compliant
0233003.MXEP	Littelfuse Inc.	3	125	Cartridge, Glass	5.80mm x 22.50mm	Medium Blow	10	Through Hole	Active	ROHS3 Compliant
0233003.MXBP	Littelfuse Inc.	3	125	Cartridge, Glass	5mm x 20mm	Medium Blow	10	Requires Holder	Active	ROHS3 Compliant
0233003.MXF4P	Littelfuse Inc.	3	125	Cartridge, Glass	5mm x 20mm	Medium Blow	10	Requires Holder	Active	ROHS3 Compliant
0233003.MXP	Littelfuse Inc.	3	125	Cartridge, Glass	5mm x 20mm	Medium Blow	10	Requires Holder	Active	ROHS3 Compliant
0232003.MX125P	Littelfuse Inc.	3	125	Cartridge, Glass	5mm x 20mm	Medium Blow	10	Requires Holder	Active	ROHS3 Compliant
0232003.MXF22125P	Littelfuse Inc.	3	125	Cartridge, Glass	5mm x 20mm	Medium Blow	10	Requires Holder	Active	ROHS3 Compliant
0232003.MXF5125P	Littelfuse Inc.	3	125	Cartridge, Glass	5mm x 20mm	Medium Blow	10	Requires Holder	Active	ROHS3 Compliant

Engineering Selection Recommendations

For applications currently using the obsolete 0233003.MXW, the following selection criteria apply:

Primary Recommendation: Select from 0233003.MXBP, 0233003.MXF4P, or 0233003.MXP for direct replacement. These parts are active products with identical mounting type (requires holder), package dimensions (5mm x 20mm), and all electrical parameters. All three are ROHS3 compliant and carry expanded approval certifications (CE, CSA, KC, PSE, UL).

Alternative for Series 232: Parts 0232003.MX125P, 0232003.MXF22125P, and 0232003.MXF5125P from the Series 232 line provide parametric equivalence with identical electrical and mechanical specifications. These are active products with ROHS3 compliance and certifications (CE, KC, PSE).

Through-Hole Alternative: The part 0233003.MXEP is suitable only when the application design permits through-hole mounting and can accommodate the larger physical dimensions (5.80mm x 22.50mm). This part is active and ROHS3 compliant.

Compliance Consideration: The original 0233003.MXW is RoHS non-compliant. All substitute parts listed are ROHS3 compliant, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can 0233003.MXEP replace 0233003.MXW directly? A: Electrical substitution is valid; however, 0233003.MXEP requires through-hole mounting and has larger physical dimensions (5.80mm x 22.50mm vs. 5.20mm x 20.00mm). Mechanical compatibility with the existing holder must be confirmed before selection.

Q: What is the difference between Series 233 and Series 232 substitutes? A: Both series maintain identical electrical ratings (3 A, 125 V AC, medium blow, 10 kA breaking capacity) and package dimensions (5mm x 20mm). The primary difference is internal design, reflected in melting I²t values (26.24 for Series 233 vs. 17.19 for Series 232) and DC cold resistance specifications. Both are electrically and mechanically compatible for the stated application parameters.

Q: Are all substitute parts RoHS compliant? A: Yes. All substitute parts listed are ROHS3 compliant. The original 0233003.MXW is RoHS non-compliant.

Q: Which substitute has the highest inventory availability? A: The 0233003.MXP has the highest inventory with 3,081 pieces in stock, followed by 0232003.MX125P with 1,095 pieces.

Q: Do all substitutes maintain the same operating temperature range? A: Yes. All substitute parts operate within the same temperature range of -55°C to 125°C.

Q: What certifications do the substitute parts carry? A: Series 233 substitutes (0233003.MXBP, 0233003.MXF4P, 0233003.MXP, 0233003.MXEP) carry CE, CSA, KC, PSE, and UL certifications. Series 232 substitutes (0232003.MX125P, 0232003.MXF22125P, 0232003.MXF5125P) carry CE, KC, and PSE certifications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message