Passives

Ametherm introduces new surface-mount thermistors

8th October 2013
Nat Bowers

Ametherm has announced three new series of surface-mount thermistors for high-accuracy temperature compensation and measurement. To meet the specific requirements of any application, SM04, SM06, and SM08 series devices offer designers a choice of 125 mW, 200 mW, and 250 mW maximum power ratings, respectively, and dissipation constants of 1.10 mW/°C, 1.50 mW/°C, and 2.00 mW/°C.

With thermal time constants down to 1.5 seconds and low profiles to 0.35 mm, the thermistors introduced today offer very fast response times while saving space in LCD controls, relay coils, crystal oscillators, and hybrid circuits. Providing a cost-effective alternative to radially leaded NTC and through-hole thermistors, SM04, SM06, and SM08 devices lower costs by supporting auto insertion during manufacturing.

The thermistors offer a wide range of resistance values from 200 Ω to 470 kΩ with tolerances down to 1 %, beta from 2500 °K to 4500 °K, and an operating temperature range of -40 °C to +125 °C. Featuring nickel barrier terminations, the SM04, SM06, and SM08 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 in quantities from 100 to 5,000 pieces.

Device specification table:

SM04 device specification table

Offered through Mouser, samples of the SM04, SM06, and SM08 series are available in three to five days. Production quantities are available with lead times of six weeks.

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