Vishay Intertechnology, Inc. has extended its IMC family of wirewound, surface-mount inductors from Vishay Dale with the release of two devices packaged in compact 0402 and 0603 case sizes and designed to provide space savings in communications applications with limited board space. Intended for systems such as cell phones, cable modems, ADSL, repeaters, Bluetooth devices, and other electronic devices, the new IMC-0402-01 and IMC-0603-01 respectively feature dimensions of 0.039 inch x 0.022 inch [1.00 mm x 0.55 mm] with a 0.020 inch [0.5 mm] height profile and 0.063 inch x 0.041 inch [1.60 mm x 1.05 mm] with a height profile of 0.041 inch [1.05 mm].

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The new wirewound inductors feature advances such as higher self-resonant frequencies (SRF), better Q factors, and more stable performance. The IMC-0402-01 offers SRF values ranging from 2100 MHz to 6000 MHz over an inductance range of 1.0 nH to 47.0 nH and improved minimum Q factor values from 26 to 13. For the IMC-0603-01, SRF values range from 1000 MHz to 6900 MHz over a broad inductance range of 2.0 nH to 270 nH, and minimum Q factor values range from 43 to 16.

Rated DC current ranges from 150 mA to 1360 mA for the IMC-0402-01 and 170 mA to 700 mA for IMC-0603-01. Tolerances as low as ±2 percent are available for devices with inductance ratings of 10 nH and up.

The new IMC inductors are rated for an operating temperature range of -40°C to +125°C and a storage temperature of -40°C to +125°C. Their lead (Pb)-free, surface-mount construction enables easy assembly with excellent solderability and resistance to soldering heat. Both devices are suitable for reflow soldering and are available in tape-and-reel packaging for automatic handling. Samples and production quantities of the new wirewound, surface-mount inductors are available now. Lead time for production quantities is nine weeks.