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foil resistor

A foil resistor consists of a supporting ceramic body, the surface of which is coated with a foil alloy of nickel-chromium. The properties of the foil alloy are mainly determined by its resistivity and temperature coefficients.

In the production of foil resistors, exact meandering resistivity patterns are etched into a foil by photoetching. The exact resistivity value is increased by gradually adding progressively smaller resistivity values or reduced by short-circuiting junctions that remove resistive loops.

The ceramic-foil interconnect provides high stability in terms of temperature dependence and power coefficient of the resistor. Also positive are the characteristic values for long-term stability, freedom from induction, thermoelectric voltage, ESD resistance and low noise. Foil resistors achieve temperature coefficients of +/- 1 ppm/°C in the operating range.

Englisch: foil resistor
Updated at: 20.09.2020
#Words: 123
Links: nickel (Ni), resistivity, indium (In), power (P), induction
Translations: DE

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