Platinum / Nikel Elements and Silistors

These elements are PTC devices used for accurate temperature measurements. Some pure metals and alloys have the characteristic to see their electrical resistance to grow when the temperature increases. Metals like Platinum and Nickel, and some alloys have a linear Resistance vs./Temperature Curve. In Europe, Platinum RTDS's have a coefficient of + 3850 ppm/°K, according to DIN CEI 751.

Other RT Curve exist, following other specs, like american
standards and which we also supply.

Nickel RTD's have, in Europe, a sloop of + 6180 ppm/°K.
according to DIN 43760. Other sloops can also be supplied.

The formula for calculation of RT Curve is as follows :

Platinum and Nickel RTD's exist in any values between 20 ohms and 20.000 ohms at 0°C. with several classes of accuracy. Several sizes and shapes are offered , also SMD. Be free to contact us. Other metals and alloys are offered, also high precision metal film resistors with a high positive temperature coefficient, e.g. to replace copper coils with ruggedized and reliable devices. For the silistors, manufactured from high pure quality silicon wafers, they are made with several shapes like DO 35, DO 34, DO 43, SOD 80, SMD. They have a more steep slop as Platinum or Nickel and can be easily linearized with a resistor in parrallel. On the other hand their temperature range is only between -55 and + 300°C. their formula is as follows: