Data di Pubblicazione: 2015-09-24
Ametherm introduces a new PTC circuit protection thermistor with the industry's highest rated voltage that can be used for inrush current limiting and overcurrent in applications such as very high voltage welding equipment and plasma cutters from 480V to 930V protection.
MCL20 500100-A has a rated voltage of 680 and a maximum inrush current of 20A at the maximum peak voltage. The device has a resistance of 50ohm at 25 ° C, a tolerance of 20%, a dissipation constant of 55.mW/C, a thermal capacity of 5.45 J / C, and a thermal constant of 62s. The thermistor has an operating temperature range of -50C to + 150C.
Radial-Leaded MCL20 500100-A is easy for PCB mounting. The thermistor has a diameter of 19mm, a maximum outline size of 9mm, and a lead pitch of 7.8mm, providing designers with a more compact and economical option, which can combine power resistors, relays and timers on one circuit To achieve the same functionality. The company said that RoHS-compliant devices are available with straight leads as well as externally or internally bent leads.
"The MCL20 500100-A can withstand hundreds of times the maximum inrush current without degrading performance," said Eric Rauch, president and CEO of Ametherm. "The reset time of this device is very short, and as a PTC thermistor, fast reset will not cause large inrush current because its resistance is already high. The result is extremely high reliability and stability in high voltage applications While saving board space. "
