Dual Diode - Common Cathode Configuration: MACOM offers silicon PIN diodes in five standard, low cost, surface mount plastic packages for use as switches and attenuators. These diodes are offered with standard Sn/Pb plating, as well as with 100% matte Sn plating on our RoHS compliant devices. MACOM's PIN diodes feature a variety of I-region lengths resulting in lower resistance, and lower capacitance devices for various microwave control circuit applications. The MA4P275/MA4P7436/MADP-007436 series offer the lowest series resistance for best performance as low loss series switches and high isolation shunt switches. The MA4P789/ MA4P7433/MADP-007433 series have the lowest capacitance and offers the highest isolation in series and series-shunt switches through 3GHz. The MA4P282/ MA4P7447/MADP-007155 series, the MA4P274/MA4P7455/ MADP-007455 series and the MADP-007448 series are general purpose PIN diodes useful as either switches or attenuators.