ECW-F2125JB Equivalent & Substitute Parts

Part Overview

The ECW-F2125JB is a 1.2 µF film capacitor rated for 250V DC, 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-F2125JB is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement.

Substiute Parts

ECW-F2125JB

Panasonic Electronic ComponentsIn Stock: 1037ECW-F2125JB Datasheet

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ECW-F2125JA

Panasonic Electronic ComponentsIn Stock: 972ECW-F2125JA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECW-F2125JB is determined by the following critical parameters:

• Capacitance Value: Must be 1.2 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-F2125JA meets all substitution criteria. While it features a smaller physical footprint and improved operating temperature range (-40°C ~ 105°C versus -25°C ~ 85°C), the core electrical specifications remain compatible. The ECW-F2125JA is classified as Active, providing long-term availability compared to the obsolete ECW-F2125JB.

Parameter Comparison

Engineering Selection Recommendations

The ECW-F2125JA is the direct substitute for the obsolete ECW-F2125JB. Both components share identical electrical specifications: 1.2 µF capacitance, ±5% tolerance, and 250V DC rating with polypropylene metallized dielectric.

The ECW-F2125JA offers advantages in product lifecycle status (Active versus Obsolete) and regulatory compliance (ROHS3 Compliant). The extended operating temperature range (-40°C ~ 105°C) provides greater thermal margin than the ECW-F2125JB (-25°C ~ 85°C).

Physical dimensions differ: the ECW-F2125JA is smaller (18.80mm x 9.50mm versus 23.00mm x 12.50mm) with reduced lead spacing (15.00mm versus 20.00mm). PCB layout modifications may be required to accommodate the smaller footprint and adjusted lead spacing.

Frequently Asked Questions (FAQ)

Q: Can the ECW-F2125JA be used as a direct replacement for the ECW-F2125JB?

A: Yes. Both components have identical capacitance (1.2 µF), tolerance (±5%), and DC voltage rating (250V). The dielectric material and termination type are identical. PCB layout adjustment is necessary due to different lead spacing and physical dimensions.

Q: What is the primary reason to substitute the ECW-F2125JB?

A: The ECW-F2125JB is classified as obsolete. The ECW-F2125JA is an active product from the same manufacturer with equivalent electrical performance and improved regulatory compliance.

Q: Are there any electrical performance differences between these parts?

A: No. Both components meet the same capacitance, tolerance, and voltage specifications. The ECW-F2125JA provides an extended operating temperature range, which may benefit thermal margin in certain applications.

Q: What PCB modifications are required when switching from ECW-F2125JB to ECW-F2125JA?

A: Lead spacing changes from 20.00mm to 15.00mm. Physical dimensions are reduced from 23.00mm x 12.50mm to 18.80mm x 9.50mm. PCB footprint and component placement must be updated accordingly.

Q: Are both parts RoHS compliant?

A: The ECW-F2125JA is ROHS3 compliant. RoHS status for the ECW-F2125JB is not specified in the provided data. Both parts are REACH Unaffected and classified as EAR99 for export control purposes.