Ametherm to showcase SURGE-GARD inrush current limiters and NTC disc thermistors at APEC 2014



Ametherm announced that the company will be showcasing selections from its RTI Electronics SURGE-GARD™ line of inrush current limiters and NTC disc thermistors for high-accuracy temperature measurement — both recently acquired from Measurement Specialties — at the Applied Power Electronics Conference and Exposition (APEC) 2014, taking place March 16-20 in Fort Worth, Texas.

In booth 1032, Ametherm will be highlighting SURGE-GARD devices that can withstand high steady-state currents from 2 A to 30 A and up to 300 J of input energy. Constructed of specially formulated metal oxide ceramic materials, the thermistors are optimized for a wide variety of applications that require inrush current limiting to reduce circuit failure — including switching power supplies, AC motors, motor drives, audio amplifiers, and battery chargers. Featured devices offer resistance at 25 °C from 0.5 Ω to 120 Ω, tolerances down to ±15 %, and diameters from 10 mm to 32 mm.

NTC disc thermistors on display at APEC 2014 will include devices with diameters from 2.54 mm to 10.2 mm, dissipation constant from 3 mw/°C to 9 mw/°C, and thermal time constant down to 10 s. Offering high-temperature operation to +150 °C and resistance at 25 °C from 4 Ω to 100,000 Ω, the devices provide high stability and maximum sensitivity for temperature measurement, compensation, and control in fan motor controls, fluid levels, and temperature sensors in a wide range of end products.