Which DEC machine made use of th pre Flip-Chip board?

Al Kossow aek at bitsavers.org
Fri Dec 21 10:51:01 CST 2018



On 12/21/18 5:19 AM, Noel Chiappa via cctalk wrote:

> The DEC brochure for it (P5141) is a little puzzling; it says (p. 2) that
> "INTEGRATED CIRCUITS are basic elements of the low cost, newly designed
> silicon FLIP CHIP modules used throughout PDP-7", but AFAIK, the first FLIP
> CHIPs (R-series, B-series, etc) were all transistors; the later M-series were
> the first ones to have ICs. Maybe this is some old meaning of "integrated
> circuits"?

The original "Flip Chip" was a packaging failure. It was literally a die bonded to a PCB
and never went into production.

I think it is mentioned in "Computer Engineering"

IBM perfected the techniques to do this later with the development of solder bumps and
IR reflow.



More information about the cctech mailing list