Bridgold 20pcs TIP31C TIP31 NPN Silicon Power Transistor,3 A 100 V TO220,3-Pin: Amazon.com: Industrial & Scientific
Amazon.com: Marcas principales TIP31 A Transistor, propósito General BJT, 60 V, 3 Amp, 3-pin, 3 + Tab, TO-220 (paquete de 15) : Industrial y Científico