BJ21 brand manufacturers: Bel Fuse, Inc., Elecinsight stock, BJ21 reference price.Bel Fuse, Inc.. BJ21 parameters, BJ21 Datasheet PDF and pin diagram description download.You can use the BJ21 Barrel - Audio Connectors, DSP Datesheet PDF, find BJ21 pin diagram and circuit diagram and usage method of function,BJ21 electronics tutorials.You can download from the Elecinsight.