Ametherm (Carson City, NV) recently released a new UL-approved circuit protection thermistor that offers a 277 V rating optimized for applications including LED lighting and ballasts, power factor correction (PFC) circuits, and inrush current control in uninterruptible power supplies (UPS) with ratings under 500 W.

Ametherm's new SL10 10003 thermistor features the highest energy, continuous current, and ambient temperature ratings for any device in its size and class. The device handles steady state current up to 3 A with a maximum received energy rating of 17 J. The device features a dissipation constant of 11 mW/°C and can handle a body temperature of 151°C at 100% of its maximum current rating. Maximum capacitance at the device's 277 V voltage rating is 200 μF.

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