Catalog > Semiconductors > Discrete Semiconductors > Diodes > Zener Diodes Stud Mount Zener Stud Mount Zener 1N2999B 56V 10W DO4 ZENER DIODE Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Additional Information Group Diodes Model 1N2999B Device Package DO-4 Power 10W Zener Working Voltage 56V Zener Working Current 10mA