The MBP200E from Massachusetts Bay Technologies is a RF PIN Diode with Reverse Voltage 200 V, Series Resistance 0.7 to 0.8 Ohms, Thermal Resistance 55 Degree/W, Capacitance 0.20 pF, Operating Temperature -55 to 150 Degree C. Tags: Chip. More details for MBP200E can be seen below.