ECW-F2105JB Equivalent & Substitute Parts

Part Overview

The ECW-F2105JB is a 1 µF film capacitor rated for 250V DC, manufactured by Panasonic Electronic Components as part of the ECW-F(B) series. This component features polypropylene (PP) metallized dielectric construction in a radial through-hole package, designed for high-frequency and switching applications. The ECW-F2105JB is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and procurement.

Substiute Parts

ECW-F2105JB

Panasonic Electronic ComponentsIn Stock: 820ECW-F2105JB Datasheet

Current PartRFQ

ECW-F2105JA

Panasonic Electronic ComponentsIn Stock: 1484ECW-F2105JA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECW-F2105JB is determined by the following critical parameters:

• Capacitance Value: Must be 1 µF
• Tolerance: Must be ±5%
• Voltage Rating - DC: Must be 250V or higher
• Dielectric Material: Must be Polypropylene (PP), Metallized
• Mounting Type: Must be Through Hole
• Package / Case: Must be Radial
• Termination: Must be PC Pins

The ECW-F2105JA qualifies as a direct substitute based on matching all critical electrical parameters and maintaining compatible physical form factors for through-hole PCB assembly.

Parameter Comparison

Engineering Selection Recommendations

The ECW-F2105JA is the qualified substitute for the obsolete ECW-F2105JB. Both components share identical electrical specifications: 1 µF capacitance, ±5% tolerance, and 250V DC rating with polypropylene metallized dielectric construction.

The ECW-F2105JA offers extended operating temperature range (-40°C ~ 105°C versus -25°C ~ 85°C) and ROHS3 compliance, providing enhanced environmental performance and regulatory alignment. The substitute maintains through-hole radial configuration with PC pin termination, ensuring compatibility with existing PCB layouts.

Physical dimensions differ between the two parts. The ECW-F2105JA is smaller (18.10mm x 8.50mm versus 23.00mm x 11.50mm) with reduced lead spacing (15.00mm versus 20.00mm). PCB layout verification is required to confirm mechanical fit within the available board space.

The ECW-F2105JA is currently in active production with higher inventory availability (1472 Pcs versus 810 Pcs), supporting long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the ECW-F2105JA directly replace the ECW-F2105JB in all applications?

A: Electrical substitution is valid based on matching capacitance, tolerance, voltage rating, and dielectric material. Physical fit must be confirmed due to dimensional differences. The smaller footprint of the ECW-F2105JA requires verification that PCB layout accommodates the reduced lead spacing (15.00mm versus 20.00mm).

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

A: The primary differences are physical dimensions, lead spacing, operating temperature range, and product status. The ECW-F2105JA is smaller, operates across a wider temperature range, and is currently in active production. Electrical performance remains equivalent for the specified 1 µF, 250V DC application.

Q: Is the ECW-F2105JA suitable for high-frequency and switching applications?

A: Yes. Both the ECW-F2105JB and ECW-F2105JA are specified for high-frequency and switching applications with identical polypropylene metallized dielectric construction.

Q: Does the ECW-F2105JA meet current regulatory requirements?

A: The ECW-F2105JA is ROHS3 compliant and REACH unaffected, meeting current regulatory standards. The ECW-F2105JB is REACH unaffected but lacks RoHS certification documentation.

Q: What is the impact of the different lead spacing on PCB design?

A: Lead spacing differs by 5.00mm (20.00mm versus 15.00mm). PCB footprints must be verified for compatibility. If the original design uses 20.00mm spacing, the ECW-F2105JA footprint will not align with existing through-hole positions without layout modification.