12V 0.5Watt Zener Diode 125-ZD

The 1N5242B is a 12V, 0.5W silicon planar Zener diode manufactured by Taiwan Semiconductor for precise voltage regulation and reference clamping applications. Housed in a hermetically sealed, through-hole DO-35 glass package, this discrete component ensures a standard tight breakdown voltage tolerance of 5%. It operates stably at a nominal Zener breakdown voltage of 12V under a 20 mA test current while presenting a maximum dynamic loop impedance of 30 ohms. Engineered for reliable power handling in space-constrained layouts, this device delivers consistent electrical performance across a wide operating temperature range from minus 65 to plus 175 degrees Celsius.