I need to mark plastic ICs with a dot after they've been programmed. Any recommendations for a quick-drying ink or paint pen?
I haven't seen any that are specifically recommended for electronics. But there are some advertised as "low corrosion" e.g.
These Sharpie paint pens work OK but are slow to dry:
The application is only 0-70C, durability is not an issue but smudging is a problem. Thanks! mark