![pcb design - Whats the standard for denoting the orientation of an LED on a PCB? - Electrical Engineering Stack Exchange pcb design - Whats the standard for denoting the orientation of an LED on a PCB? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/g9sAi.png)
pcb design - Whats the standard for denoting the orientation of an LED on a PCB? - Electrical Engineering Stack Exchange
![4cm 15cm 20cm 25cm Multifunctional Pcb Ruler Measuring Tool Resistor Capacitor Chip Ic Smd Diode Transistor Package 180 Degrees - Integrated Circuits - AliExpress 4cm 15cm 20cm 25cm Multifunctional Pcb Ruler Measuring Tool Resistor Capacitor Chip Ic Smd Diode Transistor Package 180 Degrees - Integrated Circuits - AliExpress](https://ae01.alicdn.com/kf/Hf394d3d741d643c281f0f1143f23cfcdE/4cm-15cm-20cm-25cm-Multifunctional-PCB-Ruler-Measuring-Tool-Resistor-Capacitor-Chip-IC-SMD-Diode-Transistor.jpg_Q90.jpg_.webp)
4cm 15cm 20cm 25cm Multifunctional Pcb Ruler Measuring Tool Resistor Capacitor Chip Ic Smd Diode Transistor Package 180 Degrees - Integrated Circuits - AliExpress
![Do you have an idea how to identify this faulty zener diode? It's from automotive PCB and it was marked as "ZD" on PCB. It is damaged (0Ohms in both directions) so Do you have an idea how to identify this faulty zener diode? It's from automotive PCB and it was marked as "ZD" on PCB. It is damaged (0Ohms in both directions) so](https://preview.redd.it/do-you-have-an-idea-how-to-identify-this-faulty-zener-diode-v0-fvsye8g7csf81.jpg?width=640&crop=smart&auto=webp&s=85f48a746cc6eee43c2c6b8c7d023f69282ee60c)