The ML4614 from Spectrum Control is a RF PIN Diode with Forward Current 10 to 40 mA, Reverse Current 10 uA, Breakdown Voltage 70 to 90 V, Thermal Resistance 50 to 60 Degree C/W, Forward Resistance 1.3 to 1.5 Ohms. Tags: Surface Mount. More details for ML4614 can be seen below.