2N3439 ® 2N3440 SILICON NPN TRANSISTORS ■ STMicroelectronics PREFERRED SALESTYPES ■ NPN TRANSISTOR DESCRIPTION The 2N3439 and 2N3440 are silicon epitaxial planar NPN transistors in jedec TO-39 metal case designed for use in consumer and industrial line-operated applications. These devices are particularly suited as drivers in high-voltage low current inverters, switching and series regulators. TO-39INTERNAL SCHEMATIC DIAGRAMABSOLUTE MAXIMUM RATINGSSymbolParameterValueUnit2N34392N3440 VCBO Collector-Base Voltage (IE = 0) 450 300 V VCEO Collector-Emitter Voltage (IB = 0) 350 250 V VEBO Emitter-Base Voltage (IC = 0) 7 V IC Collector Current 1 A IB Base Current 0.5 A Ptot Total Dissipation at Tc ≤ 25 oC 10 W Ptot Total Dissipation at Tamb ≤ 50 oC 1 W Tstg Storage Temperature -65 to 200 oC Tj Max. Operating Junction Temperature 200 oC December 2000 1/4