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Results tagged with semiconductors
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user 34873
Most generally a class of materials that are neither insulators or conductors in their natural state, but which can be manipulated via doping or electric fields to change their conduction state. Silicon, Germanium, and GaAs are some usual materials. The term is also used to speak about devices that are made from such materials, for example, a processor from Intel can be called a semiconductor.
11
votes
Where are the rare earth elements in electronics?
Some examples of where some less-common (not necessarily true rare-earth metals) they are used in electronics manufacturing:
For ICs:
Arsenic, Boron, Antimony and phosphorus are used as dopants in sil …
- 12.6k
4
votes
Large SiGe ASICs for digital logic
NPN and PNP transistors use more current when building logic. You need to pass current through the base-emitter junction in order to turn them on. In MOS, to first order, the only current you need is …
- 12.6k
36
votes
My teacher said a BJT phototransistor doesn't have a base
I think you and your teacher are both right - you are just not using the same definitions and thus your wording disagrees.
From your description:
Shouldn't be transistor without base be just a s …
- 12.6k
1
vote
Calculating resistance for metal layer from LEF File
RESPSQ is resistance per square. It is common to describe sheet resistance as ohms/square or \$ \cfrac{\Omega}{\Box}\$ as the size of the square does not matter.
You can find more about it here: She …
- 12.6k