ECW-FD2W125KC Equivalent & Substitute Parts

Part Overview

The ECW-FD2W125KC is a 1.2 µF film capacitor manufactured by Panasonic Electronic Components, rated for 450V DC operation with polypropylene (PP) metallized dielectric construction. This radial through-hole component is designed for EMI/RFI suppression, high-frequency switching, and high pulse/DV/DT applications. The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when electrical specifications, mechanical dimensions, and termination characteristics align with the original component requirements, enabling direct replacement in circuit designs without performance degradation.

Substiute Parts

ECW-FD2W125KC

Panasonic Electronic ComponentsIn Stock: 1134ECW-FD2W125KC Datasheet

Current PartRFQ

ECW-FD2W125K

Panasonic Electronic ComponentsIn Stock: 1265ECW-FD2W125K Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ECW-FD2W125KC are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic requires exact matching of the following parameters:

• Capacitance value: 1.2 µF
• Tolerance: ±10%
• Voltage Rating - DC: 450V
• Dielectric Material: Polypropylene (PP), Metallized
• Operating Temperature Range: -40°C ~ 110°C
• Mounting Type: Through Hole
• Package / Case: Radial
• Physical Dimensions: 0.689" L x 0.335" W (17.50mm x 8.50mm)
• Height - Seated (Max): 0.457" (11.60mm)
• Lead Spacing: 0.591" (15.00mm)
• Termination: PC Pins
• Compliance: RoHS3 Compliant, REACH Unaffected

Parts meeting all these criteria are classified as parametric equivalents and direct substitutes. No deviations in electrical performance, physical footprint, or regulatory compliance are permitted for substitution classification.

Parameter Comparison

Engineering Selection Recommendations

Both the ECW-FD2W125KC and ECW-FD2W125K maintain Active product status with identical electrical and mechanical specifications. Selection between these parts is based on availability and inventory considerations rather than performance differentiation. Both components carry full RoHS3 compliance and REACH unaffected designation, meeting regulatory requirements for industrial and commercial applications. The ECW-FD2W125K offers higher inventory availability (1236 Pcs) compared to the ECW-FD2W125KC (1033 Pcs), making it suitable for high-volume production requirements. Either part is suitable for direct substitution in EMI/RFI suppression, high-frequency switching, and high pulse/DV/DT circuit applications without circuit redesign or performance impact.

Frequently Asked Questions (FAQ)

Q: Can ECW-FD2W125K replace ECW-FD2W125KC in existing designs?

A: Yes. Both parts are parametric equivalents with identical capacitance (1.2 µF), voltage rating (450V DC), tolerance (±10%), dielectric material (polypropylene metallized), operating temperature range (-40°C ~ 110°C), physical dimensions (0.689" L x 0.335" W), lead spacing (0.591"), and termination type (PC Pins). Direct substitution is supported without circuit modification.

Q: Are there differences in mechanical footprint between these parts?

A: No. Both ECW-FD2W125KC and ECW-FD2W125K share identical physical dimensions: 0.689" L x 0.335" W (17.50mm x 8.50mm), maximum seated height of 0.457" (11.60mm), and lead spacing of 0.591" (15.00mm). PCB layout and mounting hole spacing remain unchanged.

Q: Do both parts meet the same compliance standards?

A: Yes. Both components are RoHS3 compliant and REACH unaffected. Regulatory compliance is identical across both part numbers, supporting use in applications with equivalent environmental and safety requirements.

Q: What is the primary difference between ECW-FD2W125KC and ECW-FD2W125K?

A: The parts are electrically and mechanically identical. The difference is limited to part number designation and current inventory levels. ECW-FD2W125K has higher stock availability (1236 Pcs) versus ECW-FD2W125KC (1033 Pcs).

Q: Are these parts suitable for high-frequency and high-pulse applications?

A: Yes. Both ECW-FD2W125KC and ECW-FD2W125K are specified for EMI/RFI suppression, high-frequency switching, and high pulse/DV/DT applications. Polypropylene metallized dielectric construction supports these performance requirements across the full operating temperature range of -40°C to 110°C.