The production of a cheep and efficient early era 3 transistor microchip for basic electrical functions.
The then standard silicon\germanium etching process.
|Made in.||About ~1964.|
|Transistors per chip.||3.|
|Power supply.||Low or battery power.|
|Still in use.||Yes, but with increased efficacy and reduced size.|
It was meant to replace transistors like the American 2N34 PNP Germanium Alloy Junction Transistor, so the circuit would have 1, not 3 cans on it!
Like all ICs, it is made to a JEDEC standard and ID numbering code after 1953. It was one of the Netherlands's first moves in to the modern electrical business and it was seen as a national icon at the time.
A 3 legged metallic TO-18 transistor packing unit shell. T-18 stands for Transistor Outline Package, Case Style 18. It was often mistaken for the 2N107 germanium alloy junction PNP transistor (General Electric (GE)) transistor at the time.
http://www.digikey.co.uk/product-search/en/integrated-circuits-ics?k=integrated%20circuit&WT.srch=1&mkwid=81mPp1NQ&pcrid=3082756802&pkw=%2Bintegrated%20%2Bcircuit&pmt=bb&pdv=c, https://www.utsource.net/ic-datasheet/TAA320-560410.html?utm_source=bing&utm_medium=cpc&utm_campaign=20131230&utm_term=TAA320&utm_content=TAA320, https://en.wikipedia.org/wiki/Integrated_circuit, http://www.slideshare.net/jeagrapher/integrated-circuit-49728958, https://en.wikipedia.org/wiki/TO-18, https://www.safaribooksonline.com/library/view/consumer-electronics/9789332503304/xhtml/ch20-sub4.xhtml, http://www.digikey.co.uk/product-search/en/integrated-circuits-ics?WT.srch=1&mkwid=5fL9AsOz&pcrid=3082756802&pkw=%2BIntegrated%20%2BCircuits&pmt=bb&pdv=c, https://en.wikipedia.org/wiki/Monolithic_microwave_integrated_circuit, https://www.safaribooksonline.com/library/view/consumer-electronics/9789332503304/xhtml/ch20-sub4.xhtml, http://www.ebay.com/sch/i.html?_nkw=philips+integrated+circuit, http://www.ebay.com/sch/i.html?_nkw=philips+integrated+circuit, http://www.ebay.com/itm/TAA370A-Original-New-Philips-Integrated-Circuit-/141311235114, http://www.wikipedia.or.ke/index.php/Integrated_circuit, https://en.wikipedia.org/wiki/JEDEC and https://en.wikipedia.org/wiki/TO-18