ECW-F4334JL Film Capacitor - Equivalent & Substitute Parts

Part Overview

The ECW-F4334JL is a 0.33 µF film capacitor manufactured by Panasonic Electronic Components, rated for 400V DC operation with ±5% tolerance. This radial through-hole component utilizes polypropylene (PP) metallized dielectric technology and operates across a temperature range of -40°C to 105°C. The part is currently in active production status with 1,787 units available in inventory. Film capacitors of this specification are essential in high-frequency switching applications where reliability and stable capacitance characteristics are required. Identifying equivalent substitute parts ensures design flexibility and supply chain continuity when the primary component becomes unavailable.

Substiute Parts

ECW-F4334JL

Panasonic Electronic ComponentsIn Stock: 1847ECW-F4334JL Datasheet

Current PartRFQ

B32652A4334J000

EPCOS - TDK ElectronicsIn Stock: 2362B32652A4334J000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECW-F4334JL is determined by strict equivalence across the following critical parameters:

• Capacitance Value: Must be 0.33 µF (no tolerance variation acceptable)
• Tolerance: Must be ±5% or tighter
• Voltage Rating - DC: Must be rated for 400V DC minimum
• Dielectric Material: Must be Polypropylene (PP), Metallized
• Mounting Type: Must be Through Hole
• Package / Case: Must be Radial configuration
• Lead Spacing: Must be 0.591" (15.00mm)
• Termination: Must use PC Pins

The B32652A4334J000 manufactured by EPCOS - TDK Electronics meets all mandatory substitution criteria. Both components share identical capacitance, tolerance, DC voltage rating, dielectric composition, mounting configuration, and lead spacing. This ensures direct mechanical and electrical compatibility in PCB applications without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

Both the ECW-F4334JL and B32652A4334J000 are active production components with full ROHS3 compliance and REACH unaffected status. The B32652A4334J000 carries AEC-Q200 automotive qualification, indicating enhanced reliability screening for automotive applications. The substitute part features a slightly reduced maximum seated height (0.571" versus 0.622") and narrower body width (0.335" versus 0.378"), which may provide advantages in space-constrained PCB layouts. The AC voltage rating differential (200V versus 141V) does not affect DC circuit performance. Selection between these parts should be based on application-specific requirements, inventory availability, and lead time considerations.

Frequently Asked Questions (FAQ)

Q: Can the B32652A4334J000 be used as a direct replacement for the ECW-F4334JL in all applications?

A: Yes, the B32652A4334J000 meets all mandatory electrical and mechanical substitution criteria. Both components share identical capacitance (0.33 µF), tolerance (±5%), DC voltage rating (400V), dielectric material (polypropylene metallized), mounting type (through hole radial), and lead spacing (15.00mm). The substitute part's reduced physical dimensions may provide additional PCB layout flexibility.

Q: What are the key differences between these two parts?

A: The primary differences are physical dimensions and temperature operating range. The B32652A4334J000 is slightly smaller (0.335" W versus 0.378" W, 0.571" H versus 0.622" H) and operates across a wider low-temperature range (-55°C versus -40°C minimum). The substitute part also carries AEC-Q200 automotive qualification. These differences do not affect electrical compatibility in standard applications.

Q: Are both parts suitable for high-frequency switching applications?

A: The ECW-F4334JL is explicitly rated for high-frequency and switching applications. The B32652A4334J000 is specified for DC link, DC filtering, high pulse, DV/DT, and snubber applications. Both utilize identical polypropylene metallized dielectric technology suitable for these demanding circuit conditions.

Q: Do both parts require the same PCB footprint?

A: Both components use identical lead spacing (0.591" or 15.00mm), ensuring compatible PCB footprints. The B32652A4334J000's reduced body dimensions allow it to fit in the same footprint with additional clearance margin, but no PCB redesign is necessary for substitution.

Q: What compliance certifications apply to both parts?

A: Both the ECW-F4334JL and B32652A4334J000 are ROHS3 compliant and REACH unaffected. The B32652A4334J000 additionally carries AEC-Q200 automotive qualification. Both are classified under ECCN EAR99 and HTSUS 8532.25.0010.