Thin Film Platinum RTD Sensors

US Sensor Thermistor Image
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U.S. Sensor's thin film platinum RTDs (Pt-RTD) consist of a passivated thin film platinum element deposited on a ceramic substrate. Thin film Pt-RTDs provide cost advantages when compared to wirewound platinum resistance temperature detectors. Read More

The construction of a thin film RTD sensor is not complicated. A thin layer of resistive material is first deposited on a ceramic substrate. A pattern is etched onto the sensor to create an electrical circuit which is trimmed to produce the desired resistance. Lead wires are then attached to the element and the whole assembly is coated with a thin layer of glass.

A platinum type RTD, Pt-RTD exhibits a nearly linear temperature-resistance curve, as well as very high stability, repeatability, and accuracy over a very wide temperature range. This makes it especially suitable for applications in extreme temperature conditions. Typical U.S. Sensor Platinum RTD sensors operate as low as -50°C and as high as +500°C, though higher temperature ratings are available via special order.

The thin film construction of our platinum RTD elements result in a smaller size compared to wire-wound RTDs. This gives them the advantage of having a fast response time, low thermal mass, high vibration resistance, high thermal shock resistance, and a small footprint.

U.S. Sensor also offers a wide selection of RTD probe styles that are available in a variety of housing sizes and materials, including plastic, stainless steel, aluminum, and copper. The precise, nearly linear temperature-resistance coefficient of U.S. Sensor resistance temperature detectors make them ideal in applications of extremely low and/or high temperatures. Platinum and nickel type RTDs are available.

For any inquiries about our available RTDs and assemblies, feel free to contact our expert product design team at


  • Glass coated platinum element
  • Virtually linear relationship between temperature and resistance
  • Capable of withstanding temperatures ranging from -50°C to +500°C. Higher temperature ratings are available by special order
  • High accuracy: Resistance and temperature deviation can be controlled to within ±0.06% and ±0.15°C, a tolerance that corresponds to Class “A” of IEC 751 or 1/2 DIN of DIN 43760
  • High Reliability: Capable of withstanding extreme environmental conditions
  • Available in various configurations for specific applications
  • Excellent stability even at high temperatures


  • Thermal time constant: 15 seconds max. (moving air)
  • Dissipation constant: 2 mW/°C (moving air)
  • Maximum applied current: 1 mA

Thermistor Diagram
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Part Number Resistance Ohms @ 0°C DIN 43760 Class Resistance Tol ±% @ 0°C Temp. Dev. ±°C @ 0°C TCR ppm/°C Dim "W" (±0.007") Dim "L" (±0.008") Download/View
PPG101A1 100 A 0.06 0.15 3,850 0.067 0.110 Drawing R-T Data
PPG101B1 100 B 0.12 0.30 3,850 0.067 0.110 Drawing R-T Data
PPG101C1 100 C 0.24 0.60 3,850 0.067 0.110 Drawing R-T Data
PPG501A1 500 A 0.06 0.15 3,850 0.079 0.118 Drawing R-T Data
PPG501B1 500 B 0.12 0.30 3,850 0.079 0.118 Drawing R-T Data
PPG501C1 500 C 0.24 0.60 3,850 0.079 0.118 Drawing R-T Data
PPG102A1 1000 A 0.06 0.15 3,850 0.079 0.118 Drawing R-T Data
PPG102B1 1000 B 0.12 0.30 3,850 0.079 0.118 Drawing R-T Data
PPG102C1 1000 C 0.24 0.60 3,850 0.079 0.118 Drawing R-T Data
PPG102B2 1000 B 0.12 0.30 3,750 0.079 0.118 Drawing R-T Data
PPG102C2 1000 C 0.24 0.60 3,750 0.079 0.118 Drawing R-T Data


The information contained herein is believed to be accurate. The user, however, should verify the suitability of a particular product for a specific application. U.S. Sensor Corp. does not warrant the accuracy of this information, and disclaims any liability with respect to its use.

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