Epitaxial Wafers Available In UK

‘Epitaxial silicon wafers in UK’


so, 50 years ago, read a headline in Electronics Weekly’s edition of February 1st 1961.

The story opens:


‘Wafers, one inch in diameter, of epitaxially-formed silicon silicon are now readily available in Britain. Their availability was announced simultaneously in the UK and US by the Dupont group of companies.’


The story continues:


‘Dupont told our correspondent that the epitaxial wafers break new ground because this is the first time the firm have supplied silicon in wafer form.’


‘In this form it is directly ready for the production line, and subsequent processing will be as for the conventional mesa transistor.’


‘Current prices for a single wafer are £18 each, £15 each for minimum quatities of 10, and £11 each for production quantities of 100 or more.’

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