User manual

tams elektronik
SAS modules English
Integrated circuits (ICs)
Depending on the type, ICs fulfil various tasks. They are
polarized and therefore have to be mounted in a certain
direction. The most common housing form is the so-called
"DIL"-housing, from which 4, 6, 8, 14, 16, 18 or more
"legs" (pins) are arranged along the long sides.
The mounting orientation is shown by a semicircular or circular marking
at the end of the housing, which is also shown on the PCB layout.
ICs are sensitive to damage during soldering (heat, electrostatic
charging). For that reason in the place of the ICs IC sockets are
soldered in, in which the ICs are inserted later. The mounting
orientation of the sockets is preset as well. The markings on the PCB,
the socket and the IC must lie on top of each other after mounting.
Micro-Controller
Micro-controller are ICs, which are individually programmed for the
particular application. When leaving the manufacturer´s works their
memory is empty. The programmed controller normally are only
available from the manufacturer of the circuit belonging to it.
Voltage regulators
Voltage regulators are ICs, which convert a variable, non
regulated input voltage in a constant output voltage. They
are produced in transistor housings with three connecting
pins for input, output and earth.
With voltage regulators in a flat TO-housing the unlabelled
rear is marked by a thick line on the PCB layout.
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