Littelfuse 02193.15MXAE Glass Cartridge Fuse 3.15A 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 02193.15MXAE is a 3.15 A, 250 V AC/DC glass cartridge fuse with slow-blow response characteristics, designed for through-hole mounting in 5mm x 20mm form factor applications. This part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement continuity. Substitute parts must maintain identical electrical ratings, mechanical dimensions, and thermal response characteristics to ensure direct functional replacement without circuit redesign.

Substiute Parts

02193.15MXAE

Littelfuse Inc.In Stock: 85102193.15MXAE Datasheet

Current PartRFQ

02193.15MXAEP

Littelfuse Inc.In Stock: 1045102193.15MXAEP Datasheet

DirectRFQ

02133.15MXEP

Littelfuse Inc.In Stock: 267002133.15MXEP Datasheet

Parametric EquivalentRFQ

02183.15MXEP

Littelfuse Inc.In Stock: 325402183.15MXEP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 02193.15MXAE are classified based on strict electrical and mechanical parameter alignment. All substitute candidates must satisfy the following mandatory criteria:

Core Substitution Parameters:

• Current Rating: 3.15 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Package / Case: 5mm x 20mm (Axial) (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Slow Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)

Acceptable Variation Parameters:

• Breaking Capacity @ Rated Voltage: May vary (35A to 150A acceptable)
• Melting I²t: May vary (38.15 to 202 acceptable)
• DC Cold Resistance: May vary (0.0173 to 0.0231 Ohms acceptable)
• Product Status: Active preferred over obsolete
• RoHS Compliance: ROHS3 Compliant preferred
• Approval Agencies: Subset of original certifications acceptable

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 02193.15MXAEP

The 02193.15MXAEP is the direct functional equivalent of the obsolete 02193.15MXAE. This part maintains identical electrical parameters, mechanical dimensions, thermal response characteristics, and breaking capacity. The primary distinction is product status (Active vs. Obsolete) and RoHS compliance upgrade (ROHS3 Compliant). All approval certifications are preserved. This part is the preferred selection for direct replacement in existing designs.

Secondary Substitutes: 02133.15MXEP and 02183.15MXEP

Both 02133.15MXEP and 02183.15MXEP are parametric equivalents that satisfy all mandatory substitution criteria. These parts differ in breaking capacity (35A vs. 150A) and thermal response characteristics (Melting I²t values of 202 and 38.15 respectively). Selection between these alternatives depends on circuit-specific breaking capacity requirements and thermal response tolerance. Both parts are Active status and ROHS3 Compliant.

Compliance Considerations:

All substitute parts carry ROHS3 Compliant status, addressing environmental regulatory requirements absent in the original obsolete part. Approval agency certifications remain consistent across all substitutes, maintaining compliance with international safety standards (CCC, CE, CSA, PSE, SEMKO, UL, VDE).

Frequently Asked Questions (FAQ)

Q: Can 02193.15MXAEP be used as a direct drop-in replacement for 02193.15MXAE?

A: Yes. The 02193.15MXAEP maintains identical current rating (3.15 A), voltage rating (250 V AC), package dimensions (5mm x 20mm), fuse type (Cartridge, Glass), response time (Slow Blow), and thermal operating range (-55°C to 125°C). No circuit modifications are required.

Q: What is the difference between 02193.15MXAEP and 02133.15MXEP?

A: Both parts share identical electrical ratings and mechanical form factor. The primary differences are breaking capacity (150A vs. 35A) and series designation (219XA vs. 213). Selection depends on circuit breaking capacity requirements. The 02193.15MXAEP is preferred when 150A breaking capacity is specified.

Q: Why does 02183.15MXEP have a different Melting I²t value (38.15 vs. 202)?

A: Melting I²t represents the thermal energy required to melt the fuse element. The 02183.15MXEP exhibits faster thermal response compared to the 02193.15MXAE and 02193.15MXAEP, despite maintaining identical slow-blow classification. Circuit thermal tolerance analysis is required to determine compatibility.

Q: Are all substitute parts RoHS compliant?

A: Yes. All three substitute parts (02193.15MXAEP, 02133.15MXEP, 02183.15MXEP) are ROHS3 Compliant. The original 02193.15MXAE is RoHS non-compliant.

Q: What approval certifications do the substitute parts carry?

A: All substitute parts maintain CCC, CE, CSA, PSE, SEMKO, and VDE certifications. The 02133.15MXEP adds BSI and UR certifications. The 02183.15MXEP adds K-MARK certification. These certifications satisfy international safety and regulatory requirements.

Q: Can I use 02133.15MXEP or 02183.15MXEP if 02193.15MXAEP is unavailable?

A: Yes, provided circuit design parameters accommodate the differences in breaking capacity and thermal response. Both parts satisfy all mandatory substitution criteria (current, voltage, package, fuse type, response classification, mounting type, and operating temperature range).