This MMSZ5254B-E3-08 zener diode from Vishay is perfect for blocking a voltage. Its maximum power dissipation is 500 mW. Its test current is 4.6 mA. Its maximum leakage current is 0.1 μA. In order to ensure safe delivery and enable quick mounting of this component after delivery, it will be encased in tape and reel packaging during shipment. This zener diode has an operating temperature range of -55 °C to 150 °C. It is made in a single configuration. This zener device has a nominal voltage of 27 V and a voltage tolerance of 5%.