The best way to operate a diode in the reverse-breakdown region in your circuit is by using a voltage regulator SZMMSZ5242BT1G zener diode from ON Semiconductor. Its test current is 20 mA. Its maximum power dissipation is 500 mW. Its maximum leakage current is 1 μA. This component will be shipped in tape and reel packaging to allow for effective mounting and safe delivery. This zener diode has an operating temperature range of -55 °C to 150 °C. This zener device has a nominal voltage of 12 V and a voltage tolerance of 5%. It is made in a single configuration.
