ECW-F2475JB Film Capacitor Equivalent & Substitute Parts

Part Overview

The ECW-F2475JB is a 4.7 µF film capacitor rated for 250V DC operation, manufactured by Panasonic Electronic Components. This radial through-hole component uses polypropylene (PP) metallized dielectric technology and is designed for high-frequency and switching applications. The ECW-F2475JB carries an obsolete product status, making identification of compatible substitute parts essential for ongoing design support and procurement.

Substiute Parts

ECW-F2475JB

Panasonic Electronic ComponentsIn Stock: 1178ECW-F2475JB Datasheet

Current PartRFQ

ECW-F2475JA

Panasonic Electronic ComponentsIn Stock: 2109ECW-F2475JA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECW-F2475JB is determined by strict equivalence across the following electrical and mechanical parameters:

• Capacitance value: 4.7 µF (exact match required)
• Tolerance: ±5% (exact match required)
• Voltage Rating - DC: 250V (minimum requirement; higher ratings are acceptable)
• Dielectric Material: Polypropylene (PP), Metallized (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial (exact match required)
• Termination: PC Pins (exact match required)

The ECW-F2475JA qualifies as a direct substitute because it maintains identical values for capacitance, tolerance, DC voltage rating, dielectric material, mounting type, package configuration, and termination style. Variations in physical dimensions, operating temperature range, and product status do not preclude substitution when electrical performance requirements are met.

Parameter Comparison

Engineering Selection Recommendations

The ECW-F2475JA is the qualified substitute for the obsolete ECW-F2475JB. Both components share identical electrical specifications (4.7 µF, ±5%, 250V DC, polypropylene metallized dielectric) and are designed for the same high-frequency and switching applications.

The ECW-F2475JA offers the advantage of active product status, ensuring continued availability and manufacturing support. The substitute part features an extended operating temperature range (-40°C ~ 105°C versus -25°C ~ 85°C) and includes RoHS3 compliance certification, providing enhanced environmental and regulatory alignment for modern applications.

Physical dimensions differ between the two parts. The ECW-F2475JA is smaller (23.80mm x 14.80mm versus 33.00mm x 18.00mm) with reduced lead spacing (20.00mm versus 30.00mm). PCB layout modifications are required to accommodate the substitute part's footprint.

Both components maintain identical export classification (EAR99) and REACH compliance status, supporting seamless integration into existing supply chains and regulatory frameworks.

Frequently Asked Questions (FAQ)

Q: Can ECW-F2475JA replace ECW-F2475JB in all applications?

A: Yes, provided PCB layout accommodates the different physical dimensions and lead spacing. The electrical performance is equivalent for high-frequency and switching applications.

Q: What are the key differences between these parts?

A: The primary differences are physical size, lead spacing, operating temperature range, and product status. The ECW-F2475JA is smaller and offers extended temperature operation. Electrical specifications remain identical.

Q: Does the smaller size of ECW-F2475JA affect performance?

A: No. Physical dimensions do not alter electrical performance. Capacitance, voltage rating, tolerance, and dielectric material are identical between both parts.

Q: Are there compliance or certification differences?

A: The ECW-F2475JA includes RoHS3 compliance certification, while the ECW-F2475JB does not specify this status. Both parts are REACH Unaffected and classified as EAR99 for export purposes.

Q: What PCB modifications are necessary for substitution?

A: Lead spacing differs (20.00mm versus 30.00mm). PCB footprints must be redesigned to accommodate the reduced spacing of the ECW-F2475JA. Component placement and trace routing may require adjustment.

Q: Is the ECW-F2475JA available in the same packaging as the ECW-F2475JB?

A: Both parts use radial through-hole packaging with PC pin termination. Packaging format differs (Bulk for ECW-F2475JA versus standard for ECW-F2475JB), but the component package type is identical.