Hal Murray wrote: > How much ECL is used in a 5070? A bunch
How tightly are they packed? You need a high cooling velocity even if just one chip. > How much of > the heat goes directly from the chip to the air rather than from chip to > board to air? A substantial amount of cooling is from DIP to air, unlike tiny SMT packages used now. > How much room is there above the chips? Many years ago I saw some neat Probably not much extra room. Rick Karlquist N6RK _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.