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BCY79 LOW NOISE AUDIO AMPLIFIERS DESCRIPTION The BCY79 is a silicon planar epitaxial PNP transistors in Jedec TO-18 metal case. They are designed for use in audio driver and low-noise input stages. The complementary NPN type is the BCY59. TO-18 INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit V CES Collector-Emitter Voltage (V BE = 0) -45 V V CEO Collector-Emitter Voltage (I B = 0) -45 V V EBO Emitter-Base Voltage (I C = 0) -5 V IC Collector Current -200 mA I CM Collector Peak Current -20 mA o P t ot Total Dissipation at T amb 25 C 390 mW o at T case 45 C 1 W o T stg St orage Temperature -65 to 150 C o Tj Max. Operating Junction Temperature 150 C November 1997 1/6 BCY79 THERMAL DATA o R t hj-ca se Thermal Resistance Junction-Case Max 150 C/W o R t hj- amb Thermal Resistance Junction-Ambient Max 450 C/W ELECTRICAL CHARACTERISTICS (Tcase = 25 oC unless otherwise specified) Symb ol Parameter Test Cond ition s Min. Typ . Max. Un it I CES Collector Cut-off V CE = -35 V -2 -20 nA Current (V BE = 0) V CE = -45 V -100 nA o V CE = -35 V T amb = 150 C -10