Chip inductor series offers high Q value in miniature

3rd August 2021
Alex Lynn

Model CWF1610 and CWF2414 chip inductors feature wirewound construction to unlock enhanced performance characteristics for RF signal processing and DC power line applications.

Bourns have announced the CWF1610 and CWF2414 Chip Inductor Series. These inductors employ wirewound construction on a ferrite core to offer high values of inductance, Q values, and self-resonant frequency, plus low DC resistance in a compact size with an operating temperature range of -40°C to +125°C. These features make this series well suited for RF signal processing, resonant circuits, decoupling, noise filters, and DC power line applications for audio headsets, cable modems, set-top boxes, hard disk drives, tablets, and various mobile electronic devices.

Compared to multilayer or film technology, a thicker wirewound construction around the core makes it possible to achieve lower DC resistance and high Q values of 13 to 16 in these miniature-sized inductors. In addition, the high Q values provided in the new inductors -offer designs a high impedance at resonant in inductive-capacitive LC circuits, and low loss at high frequency operation. Bourns Model CWF1610 and CWF2414 chip inductors also feature a high self-resonant frequency, which translates to low distributed capacitance and maintained inductive characteristics over a wide frequency span. With saturation current up to 860/1,100mA and rated current up to 700/1,300mA, the new chip inductors from Bourns maintain high inductance at a greater peak current matching the requirements in DC power line applications.

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