RF Transistors Infineon RF Transistors include Low Noise Amplifiers and High Linearity Transistors. Devices in the Low Noise category are based on silicon bipolar technology. Moderate transition frequency of fT <,20 GHz provides ease of use and stability. Breakdown voltage can safely support supply voltage of 5V. These transistors are suitable for use with AM over VHF/UHF up to 14GHz. High Linearity Transistors provide OIP3 (Output 3rd Order Intercept Point) above 29dBm. They are based on Infineon's high volume silicon bipolar and SiGe:C technologies for best in class noise figures. These devices are ideal for drivers, pre-amplifiers, and buffer amplifiers.