ECQ-E1223KF Equivalent & Substitute Parts

Part Overview

The ECQ-E1223KF is a 0.022 µF film capacitor rated for 100V DC, manufactured by Panasonic Electronic Components as part of the ECQ-E(F) series. This radial through-hole component uses polyester metallized dielectric technology and is designed for general-purpose applications. The part is currently obsolete, making equivalent substitutes necessary for ongoing production, maintenance, and repair applications.

Substiute Parts

ECQ-E1223KF

Panasonic Electronic ComponentsIn Stock: 885ECQ-E1223KF Datasheet

Current PartRFQ

B32529C1223J189

EPCOS - TDK ElectronicsIn Stock: 16136B32529C1223J189 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ECQ-E1223KF is determined by the following critical parameters:

• Capacitance Value: Must be 0.022 µF (exact match required)
• Voltage Rating (DC): Minimum 100V (equal or higher acceptable)
• Dielectric Type: Polyester or compatible metallized film technology
• Mounting Configuration: Through-hole radial package with 0.197" (5.00mm) lead spacing
• Termination Style: PC pins for PCB insertion

The substitute part B32529C1223J189 meets all substitution criteria. While it features improved tolerance (±5% versus ±10%) and extended temperature range (-55°C ~ 125°C versus -40°C ~ 105°C), these represent enhancements rather than deviations from the original specification.

Parameter Comparison

Engineering Selection Recommendations

The B32529C1223J189 is a direct functional substitute for the ECQ-E1223KF based on matching capacitance, voltage rating, dielectric technology, and lead spacing. The substitute part offers the following advantages:

• Active Product Status: The B32529C1223J189 is currently in active production, ensuring long-term availability and supply chain stability compared to the obsolete ECQ-E1223KF.
• Improved Tolerance: ±5% tolerance provides tighter capacitance control than the original ±10% specification.
• Extended Temperature Range: Operating range of -55°C ~ 125°C exceeds the original -40°C ~ 105°C specification, supporting broader environmental applications.
• RoHS3 Compliance: The substitute meets modern regulatory requirements for hazardous substance restrictions.
• Compact Form Factor: Smaller physical dimensions (7.30mm x 2.50mm versus 7.80mm x 4.90mm) may provide PCB layout advantages while maintaining identical lead spacing.

The substitute part is electrically and mechanically compatible with the original specification and suitable for direct replacement in existing designs.

Frequently Asked Questions (FAQ)

Q: Can B32529C1223J189 be used as a direct replacement for ECQ-E1223KF?

A: Yes. Both parts share identical capacitance (0.022 µF), DC voltage rating (100V), lead spacing (5.00mm), and radial through-hole mounting configuration. The substitute meets all electrical and mechanical requirements for direct substitution.

Q: What is the significance of the tolerance difference (±10% versus ±5%)?

A: The substitute part features tighter tolerance, meaning its actual capacitance value will be closer to the nominal 0.022 µF specification. This represents an improvement over the original part and does not create compatibility issues.

Q: Are there physical size differences that affect PCB layout?

A: Yes. The B32529C1223J189 is physically smaller (7.30mm x 2.50mm versus 7.80mm x 4.90mm) and has a lower seated height (6.50mm versus 9.00mm). Lead spacing remains identical at 5.00mm, so the part fits the same PCB footprint. The smaller form factor may provide additional PCB routing flexibility.

Q: Does the extended temperature range of the substitute part affect circuit performance?

A: No. The substitute's operating range (-55°C ~ 125°C) encompasses the original specification (-40°C ~ 105°C). Extended temperature capability does not degrade performance within the original operating window and provides additional margin for extreme environmental conditions.

Q: Is RoHS3 compliance relevant for this substitution?

A: RoHS3 compliance indicates the substitute part meets current regulatory standards for hazardous substance restrictions. This is advantageous for new designs and applications subject to modern environmental regulations. The original part's RoHS status was not specified in available documentation.

Q: What is the difference between polyester and PET dielectric materials?

A: Polyethylene Terephthalate (PET) is a specific type of polyester. The substitute's PET metallized dielectric with stacked construction is functionally equivalent to the original polyester metallized technology for this application and voltage class.