Hemisphere control (north/south) is controlled by a switch
of Contacts 12Contacts Contact Plating - Coupling Style Bayonet Circular Connector Shell Style Wall Mount Receptacle Product Range Trim Trio UT0 Series Contact Material - Circular Contact Type Crimp Socket - Contacts Not Supplied Connector Body Material Zinc Alloy Body Other details
Conformed DIN46228 part 1 standard
same artwork from original Sibley Guide to Birds
each with a V-Mount and Gold Mount battery plate
STMICROELECTRONICS STN790A Bipolar (BJT) Single Transistor, General Purpose, PNP, 30 V, 100 MHz, 1.6 W, -3 A, 200 hFE FSR PWB-270-CRST-DM-WHT Hemisphere control (north/south) is controlledThis is a Bipolar (BJT) Single Transistor, General Purpose, PNP, 30 V, 100 MHz, 1. 6 W, 3 A, 200 hFE product from STMICROELECTRONICS with the model number STN790AProduct details Transistor Polarity PNP Collector Emitter Voltage V(br)ceo 30V Transition Frequency ft 100MHz Power Dissipation Pd 1. 6W DC Collector Current 3A DC Current Gain hFE 200hFE Transistor Case Style SOT 223 No. of Pins 4Pins Operating Temperature Max 150C Product Range Automotive