handbook, halfpage BD230 PINNING PIN 1 2 3 emitter collector, connected to metal part of mounting surface base DESCRIPTION NPN power transistor in a TO-126; SOT32 plastic package. PNP complement: BD231. 3 2 1 1 2 3 Top view MAM254 Fig.1 Simplified outline (TO-126; SOT32) and symbol. LIMI.