EARLY SEMICONDUCTOR HISTORY

 AT RCA

Robert Mendelson

 

Oral History – Bob Mendelson

(Continued)

 

I finally had to learn how to make Silicon transistors. I worked in the photo processes where patterns were etched on the ˝ inch wafers before firing to make the bases and emitters by diffusion. Aluminum vaporization onto the wafers prior to etching the metal pattern was also my responsibility.  RCA had a large number of transistor types, each a little different. It made work very interesting.  In the late 1960’s RCA transferred production at Somerville from transistors to integrated  circuits. At that time I became a Group Leader for linear types.  A few years later the hourly personnel went on a long strike causing RCA to ship all the equipment to Findlay, Ohio where they were not on strike. Somerville then became a design and application location.

 

RCA started with simple arrays with just a few simple transistors or simple amplifiers. As time went by, I became more of an electrical engineer than the chemical engineer I was when I started.  At various times I was involved in IC processing, applications, design, and quality control.

 

Here is a list of some of the ICs I worked with in Design Engineering – Chip Layout and Processing (1972 to 1976):

 

CA555 -  Timer

CA3098 - Programmable Schmidt Trigger

CA3099 - Programmable Comparator

 

 

 

 

Oral History – Bob Mendelson

(Continued)

 

TA6574 - FM IF Limiter Detector

TA6575 - Stereo Decoder

TA6580 - Stereo Decoder

TA6833 - Digital Level Shifter

 

High Reliability Engineering – 1976-1979

 

I started in linear circuits HI-Rel operation—

Evaluated all customer military specifications and negotiated with customers on special orders such as TRW – Class S CA108; Lockheed – Class S CA3004, CA3006

 

Setup and ran the full operation to qualify the first linear type (CA3045) for Mil-Std 38510 QPL-1. This included full government negotiation on parameters and specifications that needed revision.

 

Applications Engineering – 1979-1980

 

Ford message center – worked with customer on specifications and helped him overcome production line problems caused by other than RCA IC’s.

 

Northern Electric – Finalized the customer’s circuit design for a water level alarm. Potential business of one million CA3164 per year.

 

 

Mendelson Oral History, Page 3

 

 

 

COPYRIGHT © 2002 by Jack Ward.  All Rights Reserved.  http://www.transistormuseum.com/