This standard establis es the quality specifications for the types of medium-power, high-voltage bipolar transis ors: BD 135, BD 136, BD 137, BD 138, BD 139 and BD 140.
NC 66-19-1984 history
1984NC 66-19-1984 Electronics. Medium-Power and High-Voliage Bipolar Transistors, Types BD 135, BD 136, 3D 137, BD 138, BD 139, and BD 140. Quality Specifications