Home Products Small Signal Transistors & Diodes Bipolar Transistor Digital Transistor BCR521 BCR521 Overview NPN Silicon Digital Transistor Summary of Features Built in bias resistor (R1= 1 kΩ, R2= 1 kΩ) Pb-free (RoHS compliant) package Qualified according AEC Q101 Parametrics Documents Order Design Support Videos Partners Training Packaging Support Contact