Ametherm has introduced three new series of surface-mount thermistors for high-accuracy temperature compensation and measurement. To meet the specific requirements of any application, the company’s SM04, SM06, and SM08 series devices are available in 125mW, 200mW, and 250mW maximum power ratings, respectively, and dissipation constants of 1.10mW/°C, 1.50 mW/°C, and 2.00 mW/°C.

With thermal time constants down to 1.5 seconds and low profiles to 0.35mm, these thermistors are claimed to offer very fast response times while saving space in LCD controls, relay coils, crystal oscillators, and hybrid circuits. They provide a cost-effective alternative to radially leaded NTC and through-hole thermistors.

They offer a wide range of resistance values from 200 O to 470 kO with tolerances down to 1  percent, beta from 2500 °K to 4500 °K, and an operating temperature range of -40 °C to 125 °C. Featuring nickel barrier terminations, series are suitable for wave and reflow soldering and offer a Moisture Sensitivity Level of 2 for high reliability. The devices are available in standard tape-and-reel packaging.