Why do bidirectional peak limiting diodes not increase the contactor coil opening time but freewheel diodes increases the opening time? - Quora
![Are Zener Diodes Unidirectional or Bidirectional - Discrete Semiconductor Products - Electronic Component and Engineering Solution Forum - TechForum │ DigiKey Are Zener Diodes Unidirectional or Bidirectional - Discrete Semiconductor Products - Electronic Component and Engineering Solution Forum - TechForum │ DigiKey](https://global.discourse-cdn.com/digikey/original/2X/a/a056ce98a49e7d385cce0cd60116ca76f2a61ffd.png)
Are Zener Diodes Unidirectional or Bidirectional - Discrete Semiconductor Products - Electronic Component and Engineering Solution Forum - TechForum │ DigiKey
![dc dc converter - Reason to connect a bidirectional tvs diode in paralell with a unidirectional one - Electrical Engineering Stack Exchange dc dc converter - Reason to connect a bidirectional tvs diode in paralell with a unidirectional one - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/ll2vg.png)
dc dc converter - Reason to connect a bidirectional tvs diode in paralell with a unidirectional one - Electrical Engineering Stack Exchange
![Symbol for Bidirectional Zener - Scheme-it - Electronic Component and Engineering Solution Forum - TechForum │ Digi-Key Symbol for Bidirectional Zener - Scheme-it - Electronic Component and Engineering Solution Forum - TechForum │ Digi-Key](https://global.discourse-cdn.com/digikey/original/2X/b/bbc11025798d249e021b985fde0a3c1fc1867888.png)
Symbol for Bidirectional Zener - Scheme-it - Electronic Component and Engineering Solution Forum - TechForum │ Digi-Key
![PCB Design Guidelines for Using TVS Diode for Transient Protection | PCB Design Blog | Altium Designer PCB Design Guidelines for Using TVS Diode for Transient Protection | PCB Design Blog | Altium Designer](https://resources.altium.com/sites/default/files/styles/max_width_1300/public/inline-images/tvs-diode-symbols.png?itok=FbGX4lWd)