Motorola 10 Watt Zener Diode 1N2984B
Used, clean and in good shape. The 1N2984B provides voltage regulation in a selection over a 3.9 V to 200 V broad range of voltages. They can be operated up to 10 Watts with adequate mounting and heat sinking with their low thermal resistance. Removed from 70's vintage equipment... they don't make 'em like this anymore!