ECW-F2155JB Equivalent & Substitute Parts

Part Overview

The ECW-F2155JB is a 1.5 µF film capacitor rated for 250V DC with polypropylene metallized dielectric construction. This component is designed for high-frequency and switching applications in through-hole radial configurations. The ECW-F2155JB is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement.

Substiute Parts

ECW-F2155JB

Panasonic Electronic ComponentsIn Stock: 781ECW-F2155JB Datasheet

Current PartRFQ

ECW-F2155JA

Panasonic Electronic ComponentsIn Stock: 1544ECW-F2155JA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECW-F2155JB is determined by the following critical parameters:

• Capacitance Value: Must be 1.5 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-F2155JA meets all substitution criteria. While physical dimensions and operating temperature ranges differ between the main part and substitute, these variations remain within acceptable parameters for equivalent functional performance in the specified application categories.

Parameter Comparison

Engineering Selection Recommendations

The ECW-F2155JA is the primary substitute for the obsolete ECW-F2155JB. Both components share identical electrical specifications: 1.5 µF capacitance, ±5% tolerance, 250V DC rating, and polypropylene metallized dielectric construction.

The ECW-F2155JA offers extended operating temperature range (-40°C ~ 105°C versus -25°C ~ 85°C) and is classified as Active product status with higher inventory availability (1465 units versus 738 units). The ECW-F2155JA carries ROHS3 compliance certification.

Physical dimensions differ between the two parts. The ECW-F2155JA is smaller in length, width, and height, with reduced lead spacing (15.00mm versus 20.00mm). PCB layout modifications may be required to accommodate the ECW-F2155JA in designs originally specified for the ECW-F2155JB.

Frequently Asked Questions (FAQ)

Q: Can the ECW-F2155JA directly replace the ECW-F2155JB without circuit modifications?

A: Electrical substitution is valid. The capacitance, tolerance, voltage rating, and dielectric material are identical. However, physical dimensions and lead spacing differ. PCB layout verification is required to confirm mechanical compatibility.

Q: What is the difference in lead spacing between these parts?

A: The ECW-F2155JB has 20.00mm lead spacing, while the ECW-F2155JA has 15.00mm lead spacing. This difference affects PCB hole placement and must be evaluated during design review.

Q: Does the ECW-F2155JA support the same temperature operating range?

A: The ECW-F2155JA supports a wider operating temperature range (-40°C ~ 105°C) compared to the ECW-F2155JB (-25°C ~ 85°C). This provides additional thermal margin in applications requiring extended temperature performance.

Q: Are there compliance differences between the two parts?

A: The ECW-F2155JA is ROHS3 compliant. Both parts are REACH Unaffected and classified under ECCN EAR99.

Q: Why is the ECW-F2155JB listed as obsolete?

A: The ECW-F2155JB is an older product variant within the ECW-F series. The ECW-F2155JA represents the current active production equivalent with improved specifications and compliance certifications.