Inrush PTC Thermistor

MCL20 500100 PTC

link to PTC on Digikey
Mouser Distributor

With its industry-high voltage rating, Ametherm’s MCL20 500100-A can withstand hundreds of hits of maximum inrush current without degrading.

The device offers a short reset time, and as a PTC thermistor a quick reset will not result in a large inrush current, as its resistance is already at a high state. The result is extremely high reliability and stability in high-voltage applications.

With a 19 mm diameter, 9 mm maximum profile, and 7.8 mm lead spacing, the MCL20 500100-A provides designers with a more compact and cost-effective alternative to combining a power resistor, relay, and timer on one circuit to achieve the same functionality.

Offered direct or through Ametherm’s network of distributors, samples and production quantities of the MCL20 500100-A are available now.

Target Applications:

Inrush current limiting and overcurrent protection in applications such as welding equipment and plasma cutters with extremely high voltages from 480 V to 930 V

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Digi-Key: 570-1437-ND
Mouser: 995-MCL20500100-A
Electrical Specifications
Max Voltage Rating 680 V
Max Inrush Current 20 A
Resistance at 25°C 50 Ω
Thermal Constant 62 s
Dissipation Constant 55 mW/°C
Heat Capacity 5.45 J/°C
Tolerance 20%
Diameter 19 mm
Operating Temperature Range -50 °C to +150°C