| General > General Technical Chat |
| Pretty advanced looking Soviet flip-chip SMD IC from 1991. |
| << < (3/4) > >> |
| amyk:
Alumina can be slightly pink. |
| babysitter:
I know, each forums curse, here is the guy giving warnings: Sometimes its a bad idea to break ceramics. It could be beryllium oxide which is toxic especially by dust inhalation. Its mostly used for ceramic RF transistor packages and other things for its good thermal conductivity. No alarm in this case: There is no pinkish tint to the raw material, normally(tm) parts with BeO must be marked. BR babysitter |
| daqq:
--- Quote ---No alarm in this case: There is no pinkish tint to the raw material, normally(tm) parts with BeO must be marked. --- End quote --- It is true that parts with BeO must be marked these days. Back in 1991 in barely-post Soviet Russia? Who knows. |
| wraper:
IMHO it's doped alumina. |
| Bud:
Good old times when people used ceramic substrate for audio IF :D , what was it, 465kHz or something? |
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