This document provides specifications for silicon zener diode chips with device number MD-1006B. The chips are planar type with aluminum alloy top electrodes and gold back electrodes. They measure 6.3 mils by 6.3 mils by 4.3 mils thick and have 3.9 mil by 3.9 mil pads. Electrical characteristics include a reverse leakage current under 100nA at 4V and under 0.5uA at 5V, a zener voltage between 11-13V at 5mA, and a maximum forward voltage of 1.2V at 20mA.