FERRANTI MPSA42 g Isemiconductors MPSA43 NPN Silicon Planar High Voltage Transistors DESCRIPTION These plastic encapsulated, general purpose transistors are designed for applications requiring high breakdown voltages, low saturation voltages and low capacitance. The E-line package is formed by injection moulding a SILICONE plastic specially selected to provide a rugged one-piece encap- sulation resistant to severe environments and allow the high junction temperature operation normally associated with metal can devices. E-line encapsulated devices are approved for use in military, industrial and professional equipments. PLASTIC E-LINE (T0-92) Alternative lead configurations are available as plug-in replacements of TO-5/39 and TO-18 metal can types, and for flat mounting. ABSOLUTE MAXIMUM RATINGS . Parameter Symbol MPSA42 MPSA43 Unit Collector-Base Voltage Veso 300 200 Vv Collector-Emitter Voltage Vceo 300 200 Vv Emitter-Base Voltage Veso 6 6 Vv Continuous Collector Current Ic 500 500 mA Power Dissipation at Tamp = 25C Prot 0 680 mw at Tease = 25C 1.8 1.8 Ww Operating and Storage Temp. Range Tj Tstg -55 to +175 C THERMAL CHARACTERISTICS Parameter Symbol Maximum Unit Thermal Resistance Junction to Ambient Rentj-amb) 220 C/W Junction to Case Rehij-case) 80 C/W SE17