The MBP70C from Massachusetts Bay Technologies is a RF PIN Diode with Reverse Voltage 70 V, Series Resistance 0.6 to 0.9 Ohms, Thermal Resistance 60 Degree/W, Capacitance 0.15 pF, Operating Temperature -55 to 150 Degree C. Tags: Chip. More details for MBP70C can be seen below.