DESCRIPTION
The UM4000 and UM4900 series features high power PIN diodes with long carrier lifetimes and thick I-regions. They are especially suitable for use in low distortion switches and attenuators, in HF through S band frequencies. While both series are electrically equivalent, 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. Similarly, peak RF voltages can be handled well in excess of applied reverse bias voltage.

KEY FEATURES
◾ Voltage ratings to 1000 V
◾ Power dissipation to 37.5 W
◾ Series resistance rated at 0.5 Ω
◾ Carrier lifetime greater than 5 µs
◾ Non cavity design
◾ RoHS compliant version available 1
◾ Thermally matched configuration
◾ Low capacitance at 0 V bias
◾ Low conductance at 0 V bias
◾ Compatible with automatic insertion equipment

APPLICATIONS/BENEFITS
◾ Isolated stud package available
◾ Surface mount package available