Temperature Sensors / Detectors / Transducers
PTC Circuit Protection Thermistor carries 680 V rating.
Press Release Summary:
Handling max inrush current of 20 A at max peak voltage, MCL20 500100-A provides inrush current limiting and overcurrent protection for 480–930 V welding equipment and plasma cutters. Radial-leaded solution, with 9 mm dia, 9 mm max profile, and 7.8 mm lead spacing, mounts to PCB and is available with straight leads and outside or inside kinked leads. At 25°C, product offers 50 Ω resistance with 20% tolerance, 55.0 mW/°C dissipation constant, 5.45 J/°C heat capacity, and 62 s thermal constant.
Original Press Release:
New Ametherm Thermistor Delivers Industry-High 680 V Voltage Rating for Welding Equipment and Plasma Cutters
CARSON CITY, Nev. — Ametherm today announced a new PTC circuit protection thermistor with an industry-high voltage rating for 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.
The new MCL20 500100-A thermistor released today features a 680 V voltage rating and handles a maximum inrush current of 20 A at maximum peak voltage. The device offers resistance at 25 °C of 50 Ù with a tolerance of 20 %, a dissipation constant of 55.0 mW/°C, a heat capacity of 5.45 J/°C, and a thermal constant of 62 s. The thermistor operates over a wide temperature range of -50 °C to +150 °C.
The radial-leaded MCL20 500100-A offers easy PCB mounting. With a 19 mm diameter, 9 mm maximum profile, and 7.8 mm lead spacing, the thermistor 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. The RoHS-compliant device is available with straight leads and outside or inside kinked leads.
"The MCL20 500100-A can withstand hundreds of hits of maximum inrush current without degrading," said Eric Rauch, president and CEO at Ametherm. "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, all while saving board space."
The MCL20 500100-A PTC thermistor is available direct or through distributors such as Mouser. Samples and production quantities of the device are available now, with factory lead times of seven weeks. Volume pricing for U.S. delivery starts at $2.60 per piece in 1,000-piece quantities.
For more information on Ametherm's products or to request a sample, visit www.ametherm.com. Or call 800-808-2434 (toll free in the United States) or 775-884-2434 from outside the U.S. and Canada.
About Ametherm
Ametherm, headquartered in Carson City, Nevada, was founded in 1994 and specializes in inrush current limiting power thermistors for circuit protection in the power market industry. Ametherm's devices are some of the highest rated in the industry and provide the widest range of inrush current protection available. For more information, visit www.ametherm.com or call 800-808-2434.
Link to datasheet: http://www.ametherm.com/datasheetspdf/MCL20500100A.pdf
Link to product photo: http://www.redpinesgroup.com/Ametherm/AmethermMCL20.jpg
Agency Contact:
Bob Decker
Redpines
+1 415 409 0233
bob.decker@redpinesgroup.com
Ametherm Contact:
Lori Morton
Ametherm
+1 775 884 2434
lori@ametherm.com
