UM4001C [Microchip]

The UM4000 and UM4900 series are high power PIN diodes with long carrier lifetimes and thick I-regions. They are designed for low distortion switches and attenuators in HF through S band frequencies. Both series are electrically equivalent, but the UM4900 series have higher power ratings due to a shorter thermal path between the chip and package. High charge storage and long carrier lifetime enable high RF levels to be controlled with relatively low bias current. Peak RF voltages can be handled well in excess of applied reverse bias voltage. These diodes have been qualified in high power UHF phase shifters and megawatt peak-power duplexers, and are used in antenna selectors and couplers.