UM4310

WWW.Microsemi .COM UM4300 / UM7300 SWITCHING / ATTENUATOR PIN DIODES DESCRIPTION The UM4300 and UM7300 series combine a diode chip of extremely thick intrinsic region with a low thermal resistance construction. This results in diodes uniquely applicable to very low distortion linear attenuators and specialized functions. The UM4300 series, with large cross-sectional chip area offers the highest power capability, of the two series. The UM7300 series offers lower capacitance. Both diode series are intended for use in linear attenuators operating from HF to beyond 1 GHz. Low distortion is a result of transit time frequencies below 5 MHz. Operated as RF switches, either diode series can be operated at low dc reverse bias voltages, to hold off much higher RF voltage levels. ABSOLUTE MAXIMUM RATINGS AT 25º C (UNLESS OTHERWISE SPECIFIED) UM4300 Pkg Condition PD θ (W) (°C/W) A 25 °C Pin Temperature 20 7.5 B&E C D ½ in. total length to 25 °C Contact Free Air 25 °C Stud Tempera...