Point Matched NTC Thermistor (PM Series)
PM series thermistors have epoxy encapsulated bead diameters of 0.095”, have an operating temperature range from -50°C to 150°C, are available in numerous base resistances and Betas, can be supplied with tolerances to ±1.0% at a variety of customer selected temperatures, and are available with #28 to #32 AWG un-insulated lead wire. RoHS Compliant.
Specifications
Custom Thermistors:
For Custom PM Series Thermistors - contact Selco
Standard Size:
.095" diameter, 2" or 3" length leads
Beta:
3435K - 4847K (25ºC/85ºC)
Resistance at 25ºC:
1K Ohms to 1 Million Ohms
Tolerance at 25ºC:
±1% to ±10% or ±0.1ºC to ±1.0ºC
Temp Range:
To match your requirements
Dissipation Value:
2 mW/ºC in still air
13 mW/ºC in stirred oil
Thermal Time Constant:
Typically 0.75 seconds in stirred oil
Maximum Power Rating:
30 mW at 25ºC to 1 mW at 100ºC (used in 'self-heat' applications such a liquid level control and air flow sensing)
Description
Below are some example part numbers with application specific probe housing, lead wire details, overall length, etc. These assemblies are typically RoHS compliant.
PM-A001K-2C14
NTC thermistor, 1K Ohm base resistance at 25°C, Beta of 3977K (25/85), tolerance of ±2.0% at 25°C, 0.95” diameter epoxy encapsulated thermistor, with two un-insulated #30 AWG tinned copper leads, with an overall length of 2.0”.
PM-D100K-1B14
NTC thermistor, 100K Ohm base resistance at 25°C, Beta of 4262K (25/85), tolerance of ±1.0% at 0°C, 0.95” diameter epoxy encapsulated thermistor, with two un-insulated #30 AWG tinned copper leads, with an overall length of 2.0”.