An array of product innovations from Vishay Intertechnology will be on display at the IEEE MTT International Microwave Symposium (IMS2015) this week. QUAD high-frequency (HF), high-power multilayer ceramic chip capacitors (MLCCs) developed by Vishay Vitramon offer a Q of greater than 2000, equivalent series resistance (ESR) down to 0.01 Ω, and 200- to 700-V voltage ratings. Also on display will be surface-mount, high-frequency MLCCs that help reduce signal loss and power consumption in communications apps such as VoIP networks, cellular base stations, and wireless comm (Wi-Fi, WiMAX). Precision thin-film resistor chips and networks from Vishay Dale Thin Film offer HF response to 40 GHz, power ratings to 22 W, 5-ppm/°C temperature coefficient of resistance (TCR), operating temperatures to +250°C, and epoxy-bondable terminations.
Vishay Dale Electro-Films (EFI) will exhibit surface-mount, thin-film RF capacitors that maintain a low dc resistance (DCR) and high Q for impedance matching. These include compact thin-film resistors for amplifiers, oscillators, and attenuators, and low-inductance, thin-film RF spiral inductors for RF tuning circuits and lumped element filters. In addition the company will show custom substrates with sidewall patterning (plate thickness of ≤ 0.025 in. and a minimum gap of 0.003 in.), as well as 50-Ω micro-strip transmission lines.