Littelfuse 0233003.MXE Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0233003.MXE is a 3 A, 125 V AC/DC glass cartridge fuse with a 5mm x 20mm axial form factor, rated for medium blow response. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new designs. The fuse is designed for through-hole mounting applications requiring reliable overcurrent protection in industrial and commercial equipment.

Substiute Parts

0233003.MXE

Littelfuse Inc.In Stock: 11660233003.MXE Datasheet

Current PartRFQ

0232003.MXE125P

Littelfuse Inc.In Stock: 10790232003.MXE125P Datasheet

Parametric EquivalentRFQ

0233003.MXEP

Littelfuse Inc.In Stock: 11180233003.MXEP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0233003.MXE are qualified based on the following critical parameters:

• Current Rating: 3 A (exact match required)
• Voltage Rating (AC): 125 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Package / Case: 5mm x 20mm (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Response Time: Medium Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 10 kA (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)

All substitute parts listed maintain these core electrical and mechanical specifications, ensuring direct functional compatibility in applications originally designed for the 0233003.MXE.

Parameter Comparison

Engineering Selection Recommendations

0233003.MXEP is the primary substitute for the obsolete 0233003.MXE. Both parts share identical series designation (233) and maintain equivalent electrical characteristics with a melting I²t of 26.24 versus 27 for the original part. The 0233003.MXEP is active in production and carries ROHS3 compliance with expanded approval certifications including CE, CSA, KC, PSE, and UL.

0232003.MXE125P is a secondary substitute from the 232 series. While it meets all core electrical and mechanical specifications, it exhibits a lower melting I²t value of 17.19, indicating faster thermal response characteristics. This part is ROHS3 compliant and carries CE, KC, and PSE certifications. Selection of this part should be based on application-specific thermal response requirements.

Both substitute parts are available in active production status with improved regulatory compliance compared to the obsolete main part.

Frequently Asked Questions (FAQ)

Q: Can 0233003.MXEP directly replace 0233003.MXE in existing designs?

A: Yes. The 0233003.MXEP maintains identical current rating (3 A), voltage rating (125 V AC), fuse type (cartridge glass), package dimensions (5mm x 20mm axial), mounting type (through hole), response time (medium blow), and breaking capacity (10 kA). Physical and electrical compatibility is confirmed.

Q: What is the difference between 0233003.MXEP and 0232003.MXE125P?

A: Both parts meet the core electrical and mechanical specifications. The primary difference is the melting I²t value: 0233003.MXEP has 26.24 while 0232003.MXE125P has 17.19. This affects thermal response speed. Additionally, 0233003.MXEP carries CSA and UL certifications, while 0232003.MXE125P does not.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both 0233003.MXEP and 0232003.MXE125P are ROHS3 compliant, whereas the original 0233003.MXE is RoHS non-compliant.

Q: What certifications do the substitute parts carry?

A: 0233003.MXEP carries CE, CSA, KC, PSE, and UL certifications. 0232003.MXE125P carries CE, KC, and PSE certifications.

Q: Can I use these parts interchangeably in the same application?

A: 0233003.MXEP is the direct equivalent and recommended primary substitute. 0232003.MXE125P can be used where the lower melting I²t value (17.19) is acceptable for the application's thermal response requirements.