![What does this zener diode (marked on schematic) do here? The anode and cathode are both connected to ground. : r/AskElectronics What does this zener diode (marked on schematic) do here? The anode and cathode are both connected to ground. : r/AskElectronics](https://preview.redd.it/r7ac7nz7mjk81.png?auto=webp&s=69a9bdfcbc8bb0720ed4f962e6d756c9f6fddf52)
What does this zener diode (marked on schematic) do here? The anode and cathode are both connected to ground. : r/AskElectronics
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RD5.1MW 1 pair common cathode Zener Diodes 5.1V 200mW/0.2W SOT23-5.1V marking 51W constant voltage/constant current/surge absorber/ESD保护电路|Welcome to Eric Online Store - Shenzhen ERIC Electronics Co., Ltd.
![How can I distinguish between the anode and cathode terminals? | Toshiba Electronic Devices & Storage Corporation | Americas – United States How can I distinguish between the anode and cathode terminals? | Toshiba Electronic Devices & Storage Corporation | Americas – United States](https://toshiba.semicon-storage.com/content/dam/toshiba-ss-v3/master/en/semiconductor/knowledge/faq/diode/faq_diode_02_e.gif)
How can I distinguish between the anode and cathode terminals? | Toshiba Electronic Devices & Storage Corporation | Americas – United States
![How can I distinguish between the anode and cathode terminals? | Toshiba Electronic Devices & Storage Corporation | Americas – United States How can I distinguish between the anode and cathode terminals? | Toshiba Electronic Devices & Storage Corporation | Americas – United States](https://toshiba.semicon-storage.com/content/dam/toshiba-ss-v3/master/en/semiconductor/knowledge/faq/diode/how-to-distinguish-the-anode-and-cathode-terminals-of-a-diode_en_01.png)