A Series Ceramic Core Inductors

Introduction

Knowles A Series Ceramic Core Inductors are surface-mount inductors intended for RF and other cost-sensitive, high-volume electronic designs. The series combines a broad 1 nH to 10 µH inductance range with four common SMD case sizes, allowing designers to select values and footprints across a range of compact circuit implementations.

The ceramic-core construction and specified industry-standard Q performance make the family relevant where consistent inductance over a broad frequency range is required.

What it does

These inductors store energy and provide frequency-dependent impedance in electronic circuits. Within the A Series, values span from 1 nH through 10 µH, covering low-inductance RF functions as well as higher-value filtering and power-management roles.

The parts are available in 0402, 0603, 0805, and 1008 surface-mount case sizes. Their specified operating temperature range of -55°C to +125°C supports use in equipment exposed to substantial ambient-temperature variation.

Applications

Potential applications based on the series’ stated characteristics include:

• RF matching, tuning, and filtering networks
• GPS-related RF circuitry
• Noise-suppression and signal-filtering circuits
• DC-DC converter and other power-management circuits
• High-volume electronic assemblies requiring standard SMD footprints

Design considerations

Footprint selection is a primary integration consideration: the series is offered in 0402, 0603, 0805, and 1008 SMD packages, so board area and assembly requirements can be balanced against the required inductance value.

Designers should also select parts according to the required inductance across the 1 nH to 10 µH range and account for the application’s operating environment within the specified -55°C to +125°C temperature range. The ceramic-core construction and industry-standard Q performance are relevant factors when evaluating the component in RF and filtering networks.

Availability and further information

The source and datasheet links on this page provide further information on the Knowles A Series Ceramic Core Inductors, including series documentation and distributor-provided details.