Thermistor eliminates conduction between leads

Ametherm has extended the capabilities of
its ACCU-Curve series of interchangeable NTC thermistors with the
new ACL-011. The devices feature insulated
tinned-copper leads to ensure the most accurate temperature sensing with no
unintended conduction between leads, said the company. Applications include long-term
stability and reliability for high-accuracy temperature sensing, control, and
compensation in medical, industrial, and automotive applications.

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The thermistors offer interchangeability over a broad temperature
range and eliminate the need to individually calibrate or provide circuit
compensation for part variability, according to the company. As less-expensive
alternatives to RTD probes and thermocouples, the devices deliver the tight
tolerances required for accurate temperature measurement in medical
instrumentation and can be potted in a variety of housings for temperature
compensation circuits in industrial and automotive applications.

Key specs include:

  • Resistance
    at 25°C 50 kΩ ±1% tolerance
  • Dissipation
    constant 3 mW/°C min
  • Operating
    temperature range of –40°C to 125°C
  • Thermal
    time constant 12 s
  • Beta
    (25°C/50°C) = 3,950 K
  • Max.
    power rating 50 mW
  • Insulated
    tinned copper leads

The
ACL-011 is available directly or through distributors such as Digi-Key and
Mouser. Samples and production quantities are available now with lead times of
12 weeks for large orders. Volume pricing starts at $1.37 per piece for U.S.
delivery.

Learn more about Ametherm