® BUT90 HIGH POWER NPN SILICON TRANSISTOR s NPN TRANSISTOR s HIGH CURRENT CAPABILITY s FAST SWITCHING SPEED s HIGH RUGGEDNESS s LOW COLLECTOR EMITTER SATURATION t(s)APPLICATIONS cs UNINTERRUPTABLE POWER SUPPLY us MOTOR CONTROL ds LINEAR AND SWITCHING INDUSTRIAL roEQUIPMENT te PDESCRIPTION The BUT90 is a Multiepitaxial Planar NPN leTransistor in TO-3 package.
It is intended for use oin high frequency and efficency converters, - Obsswitching regulators and motor control.
1 2 TO-3 (version "S") INTERNAL SCHEMATIC DIAGRAM Obsolete Product(s)ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VCEV Collector-Emitter Voltage (VBE = -1.
5 V) 200 V VCEO Collector-Emitter Voltage (IB = 0...

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