Does this component look familiar? Diode?

I have to rebuild this small board for a piece of my printing equipment. It's a bank of quartz bulbs that serves as a flash dryer for ink. It runs on 220 and has various timers and switches to turn on/off certain bulbs and change dwell times, etc. Fairly basic, but I cannot for the life of me figure out what this little blue component is. No markings at all on it. One end goes to the orange cap and the other goes to a big round triac. Pics in the album. Yes, my electronics knowledge is one step above Luddite and I have an unhealthy thirst for DIY. Guessing the board is 20-15 years old.

Thanks for your time and brain power!

https://photos.app.goo.gl/5a2zugRTuNswtakV8

by sawduster
August 03, 2021

No Answers

No answers yet. Contribute your answer below!


Your Answer

You must log in or create an account (free!) to answer a question.

Log in Create an account


Go Ad-Free. Activate your CircuitLab membership. No more ads. Save unlimited circuits. Run unlimited simulations.

Search Questions & Answers


Ask a Question

Anyone can ask a question.

Did you already search (see above) to see if a similar question has already been answered? If you can't find the answer, you may ask a question.


About This Site

CircuitLab's Q&A site is a FREE questions and answers forum for electronics and electrical engineering students, hobbyists, and professionals.

We encourage you to use our built-in schematic & simulation software to add more detail to your questions and answers.

Acceptable Questions:

  • Concept or theory questions
  • Practical engineering questions
  • “Homework” questions
  • Software/hardware intersection
  • Best practices
  • Design choices & component selection
  • Troubleshooting

Unacceptable Questions:

  • Non-English language content
  • Non-question discussion
  • Non-electronics questions
  • Vendor-specific topics
  • Pure software questions
  • CircuitLab software support

Please respect that there are both seasoned experts and total newbies here: please be nice, be constructive, and be specific!

About CircuitLab

CircuitLab is an in-browser schematic capture and circuit simulation software tool to help you rapidly design and analyze analog and digital electronics systems.