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Early bipolartransistor

Early construction of a bipolar transistor (OC603 from Telefunken). The color dot is the collector terminal, the germanium chip is mounted via a hole in a metal sheet which is the base terminal. Attribution: Ulfbastel at the German language Wikipedia.

The ideaEdit

Creating a small, cheep and durable replacement for valves (vacuum tubes).

ManufacturingEdit

N\A, but probably akin to then Western practices.

StatsEdit

OC603 from Telefunken bipolar transistor.
Category. Statistic.
Designed in. Thought of in 1936, started in 1947, but perfected in 1949.
Made in. 1954.
Transistors per chip. 1.
Power supply. Medium, low and battery power.
Still in use. No.
Nationality. W. Germany.

The OC603 from Telefunken bipolar transistor was one of the early glass cased type. The glass case was a hang-over from the valve era. It was one of W. Germay's first moves in to the modern elctrial bussiness and it was seen as a national icon at the time.

CasingEdit

A small, 3 metal legged, valve like, glass capsual. 

Also seeEdit

SourcesEdit

  1. http://newsgroups.derkeiler.com/Archive/De/de.sci.electronics/2006-06/msg00442.html
  2. http://www.clarkeelectric.org/3879/transistors-nos/
  3. http://www.datasheetarchive.com/Telefunken+tfk+transistor-datasheet.html
  4. https://images.search.yahoo.com/search/images;_ylt=A0LEV16dXmxXnfoAsHtXNyoA;_ylu=X3oDMTEyY3M1aWxwBGNvbG8DYmYxBHBvcwMxBHZ0aWQDVUkyQzJfMQRzZWMDc2M-?p=OC603+From+Telefunken+Bipolar+Transistor&fr=yset_chr_cnewtab
  5. https://sites.google.com/site/transistorhistory/Home/european-semiconductor-manufacturers/history-of-telefunken
  6. http://www.radiomuseum.org/tubes/tube_oc603.html
  7. http://uk.rs-online.com/web/c/semiconductors/discrete-semiconductors/bipolar-transistors/?cm_mmc=UK-PPC-_-bing-_-1_UK_EN_G_Semiconductor_Discrete_BMM-_-Bipolar_Transistors&mkwid=D1jJj5z1_dc
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