Part Number: 12F509I (Micro) Part Number: 12F509-IP (Microchip) Part Number: 12F509-ISM (Mic) Part Number: 12F509-ISM034 (Mic) Part Number: 12F509-ISN (No description) Part Number: 12F509SN (Sop-8) Part Number: 12F50A (No description) Part Number: 12F50B (Component) Part Number: 12F50F50SS (Nipple boss) Part Number: 12F50GS (Adapter straight pip) Part Number: 12F50G-SS (Boeing) Part Number: 12F50M (No description) Part Number: 12F50MPBF (No description) Part Number: 12F50PBF (No description)