![Help me choose replacements for these obsolete diodes. I've read somewhere that two 4148 in series will work fine and somewhere else that I should replace them with Zener 1.4V. The diodes Help me choose replacements for these obsolete diodes. I've read somewhere that two 4148 in series will work fine and somewhere else that I should replace them with Zener 1.4V. The diodes](https://preview.redd.it/v10estrrn8j91.jpg?width=400&format=pjpg&auto=webp&s=5535074cdb6ff9f06cd236a6e7ad6d9de5f4c52a)
Help me choose replacements for these obsolete diodes. I've read somewhere that two 4148 in series will work fine and somewhere else that I should replace them with Zener 1.4V. The diodes
![switching - How to choose the correct TVS diode and how to size it? - Electrical Engineering Stack Exchange switching - How to choose the correct TVS diode and how to size it? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/B2ong.jpg)
switching - How to choose the correct TVS diode and how to size it? - Electrical Engineering Stack Exchange
![protection - Choosing the diode for protecting an ADCs inputs - Electrical Engineering Stack Exchange protection - Choosing the diode for protecting an ADCs inputs - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/R6OHS.png)