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 idea[]
Creating a small, cheep and durable replacement for valves (vacuum tubes).
Manufacturing[]
N\A, but probably akin to then Western practices.
Stats[]
| 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.
Casing[]
A small, 3 metal legged, valve like, glass capsual.
Also see[]
Sources[]
- http://newsgroups.derkeiler.com/Archive/De/de.sci.electronics/2006-06/msg00442.html
- http://www.clarkeelectric.org/3879/transistors-nos/
- http://www.datasheetarchive.com/Telefunken+tfk+transistor-datasheet.html
- https://images.search.yahoo.com/search/images;_ylt=A0LEV16dXmxXnfoAsHtXNyoA;_ylu=X3oDMTEyY3M1aWxwBGNvbG8DYmYxBHBvcwMxBHZ0aWQDVUkyQzJfMQRzZWMDc2M-?p=OC603+From+Telefunken+Bipolar+Transistor&fr=yset_chr_cnewtab
- https://sites.google.com/site/transistorhistory/Home/european-semiconductor-manufacturers/history-of-telefunken
- http://www.radiomuseum.org/tubes/tube_oc603.html
- 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