Part Number, 1Z150. Manufacturer, Toshiba (https://www.toshiba.com/). Title, SILICON DIFFUSED JUNCTION TYPE ZENER DIODE.
Product Overview :Diode Zener Single 150V 10% 1W 2-Pin DO-15; Lifecycle Status:Active. RoHS; PB free. Specifications. Zener voltage: 150V. Package: DO-15.
the 1Z150 is a silicon Z-diode, Uz = 150V, Iz = 2mA, applications: voltage stabilisation.