ECW-FD2W684P1 Equivalent & Substitute Parts Reference

Part Overview

The ECW-FD2W684P1 is a 0.68 µF film capacitor manufactured by Panasonic Electronic Components, rated for 450V DC operation with polypropylene dielectric material. This radial through-hole component is designed for EMI/RFI suppression, high-frequency switching, and high pulse applications. The part maintains Active product status with ROHS3 compliance and is currently in stock with 765 units available. Substitute parts are identified to address inventory availability, lead time requirements, or specific tolerance and voltage rating needs within the ECW-F(D) series.

Substiute Parts

ECW-FD2W684P1

Panasonic Electronic ComponentsIn Stock: 837ECW-FD2W684P1 Datasheet

Current PartRFQ

ECW-FD2W684J

Panasonic Electronic ComponentsIn Stock: 1741ECW-FD2W684J Datasheet

Parametric EquivalentRFQ

ECW-FD2W684JC

Panasonic Electronic ComponentsIn Stock: 1679ECW-FD2W684JC Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECW-FD2W684P1 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 0.68 µF (exact match required)
• Voltage Rating - DC: 450V (exact match required)
• Dielectric Material: Polypropylene (PP), Metallized (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial (exact match required)
• Lead Spacing: 0.591" (15.00mm) (exact match required)
• Physical Dimensions: 0.689" L x 0.264" W (17.50mm x 6.70mm) (exact match required)
• Operating Temperature Range: -40°C ~ 110°C (exact match required)
• Termination: PC Pins (exact match required)

Allowable Variation Parameters:

• Tolerance: ±5% (acceptable range for substitution)
• Voltage Rating - AC: May vary or be unspecified

The substitute parts ECW-FD2W684J and ECW-FD2W684JC meet all mandatory matching criteria and are classified as parametric equivalents within the ECW-F(D) series.

Parameter Comparison

Engineering Selection Recommendations

All three parts—ECW-FD2W684P1, ECW-FD2W684J, and ECW-FD2W684JC—maintain Active product status and ROHS3 compliance. Selection between these equivalents is based on inventory availability and AC voltage rating specifications:

ECW-FD2W684P1: Primary selection when AC voltage rating is not required or unspecified in circuit design. Current inventory: 765 units.

ECW-FD2W684J: Direct substitute with specified 84V AC rating. Highest current inventory at 1690 units. Select when AC voltage rating of 84V is compatible with circuit requirements.

ECW-FD2W684JC: Direct substitute with unspecified AC voltage rating, matching the primary part's AC specification profile. Current inventory: 1587 units. Select when AC voltage rating specification is not a design constraint.

All three parts share identical DC voltage rating (450V), capacitance (0.68 µF), tolerance (±5%), dielectric material, physical dimensions, lead spacing, operating temperature range, and termination type. Interchangeability is confirmed for through-hole PCB assembly applications requiring 0.68 µF, 450V DC film capacitors with radial configuration.

Frequently Asked Questions (FAQ)

Q: Can ECW-FD2W684J be used as a direct replacement for ECW-FD2W684P1?

A: Yes. ECW-FD2W684J is a parametric equivalent. Both parts share identical capacitance (0.68 µF), DC voltage rating (450V), dielectric material (polypropylene metallized), physical dimensions, lead spacing, and operating temperature range. The difference is the specified AC voltage rating of 84V on ECW-FD2W684J versus unspecified on ECW-FD2W684P1. If your circuit does not require AC voltage specification, substitution is valid.

Q: What is the difference between ECW-FD2W684J and ECW-FD2W684JC?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. ECW-FD2W684J specifies an 84V AC rating, while ECW-FD2W684JC does not specify an AC rating. For DC-only applications, both are interchangeable. For AC applications, ECW-FD2W684J is the appropriate selection if 84V AC rating is required.

Q: Are all three parts suitable for EMI/RFI suppression applications?

A: Yes. All three parts—ECW-FD2W684P1, ECW-FD2W684J, and ECW-FD2W684JC—are rated for EMI/RFI suppression, high-frequency switching, and high pulse/DV/DT applications. Application suitability is identical across all three equivalents.

Q: Do these parts require any special handling or moisture sensitivity precautions?

A: No. All three parts have Moisture Sensitivity Level (MSL) listed as Not Applicable, indicating no special moisture control measures are required during storage, handling, or assembly.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. ECW-FD2W684P1, ECW-FD2W684J, and ECW-FD2W684JC are all ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Can these radial film capacitors be used in surface-mount applications?

A: No. All three parts are through-hole mounted components with PC pin termination and radial configuration. They are designed for through-hole PCB assembly only and are not suitable for surface-mount technology (SMT) applications.

Q: What is the lead spacing for these capacitors?

A: The lead spacing is 0.591" (15.00mm) for all three parts. This dimension is critical for PCB footprint design and must match the circuit board hole pattern.