Colors of Vintage IC's

[twistedpneumatic]

I've seen black(duh), white/gold ceramic, purple/gold ceramic, blue, and yellow. What other colors did they come in and why?

 

[rpiguy2]

I've seen black(duh), white/gold ceramic, purple/gold ceramic, blue, and yellow. What other colors did they come in and why?

Different materials were chosen for good reasons. Ceramic (usually white or purplish) was better at dissipating heat than plastic. Gold is a superior conductor and good for high performance applications.

 

[Chuck(G)]

Resistor networks, though not strictly ICS, were often colored blue, yellow or red.

 

[snuci]

I have some gray 2102 memory chips that are quite old. I don't know why they are gray.