New circuit protection thermistor has excellent ratings for resistance, current and energy

Ametherm today released a new UL-approved circuit protection thermistor that helps to conserve power, save space, and lower costs for a wide variety of applications with industry-best hot resistance, current handling, and energy ratings. The new SL32 0R230 released today is the only UL-approved circuit protection thermistor on the market with a maximum continuous current rating of 30A and "hot" resistance on the order of just 6mOhm. This capability minimizes voltage drop to a range of 0.18V to 0.30V, which helps to maximize battery life and conserve power in applications such as inverters and motor drives. Until now, designers typically needed to run two 50mOhm thermistors in parallel to achieve a comparable level of power efficiency. The device, with 20mOhm resistance at 50% of maximum current, allows designers to reduce component count while limiting excess circuit board heat, thanks to the device's low resistance and low I²R power consumption/loss. A high UL-approved energy rating of 100J means the device is ideal for DC applications where a lower level of inrush current is present but its duration is relatively long. Maximum capacitance for the device is 6,946µF at 120VAC and 1,736µF at 240VAC. The device's dissipation constant is 45.4mW/C. The device has a maximum diameter of 31mm and height profile of 6mm.