Russian KT3102 transistor, TO92 case. BC239C y BCY57 compatible. Ideal for big muff, silicon fuzz, etc. High gain hFE>400
KT3102 the perfect transistor for legendary Big Muff pedal (Russian series: Red Army Overdrive, Civil War Big Muffs, The Green Civil war and Tall Fonts, Bubble Fonts, BMP etc). hFE between 400-900, military grade transistor. TO92 case.