Vishay Intertechnology, introduced a new series of thin film chip resistors in compact 0402 and 0603 case sizes. Built on an aluminum nitride (AlN) substrate, the Vishay Sfernice CHEP series provides power handling and high frequency performance in standard surface-mount footprints.
The devices deliver standard power ratings of 1.2 W in the 0402 case size and 1.8 W in the 0603 case size. When mounted per datasheet guidelines, power ratings increase by 50 % to 1.8 W and 2.8 W, respectively.
The resistors operate across a wide frequency range and are available with flip-chip or wraparound terminals. When mounted as flip-chip devices, resistors in the 0402 case size achieve frequencies to 50 GHz, while wraparound active face-up mounting supports operation to 20 GHz. Devices in the 0603 case size support frequencies up to 40 GHz.
The CHEP series features LC values as low as 1 x 10⁻²⁴. The low parasitics reduce phase shift, maintain consistent impedance, and minimize noise. Standard 0402 and 0603 case sizes enable integration into widely accepted land patterns.
Applications include telecom and connectivity uses such as LEO satellites, base station terminals, 5G and 6G networks, and RF infrastructure including remote radio units (RRUs) and antennas. Additional applications include aerospace and defense systems such as drones, satellite payloads, guidance and telemetry systems, data links, and phased array radar systems.
The resistors offer a resistance range from 20 Ω to 120 Ω with tolerances down to ±1 % and a temperature coefficient of ±100 ppm/°C, with ±50 ppm/°C available on request. The devices are RoHS-compliant, halogen-free, and Vishay Green, and operate over a temperature range from -55 °C to +155 °C.
Samples and production quantities of the CHEP series are available now, with lead times of 16 weeks.
