New Product Announcement June 2014 NTC Disc Thermistors The News: Ametherm introduces new NTC disc thermistors for high-accuracy temperature measurement. Key Benefits: Wide range of resistance values at 25 C from 4 to 150 k Precision tolerances to 1 % Provide a cost-effective alternative to thermocouples in precision circuits Diameters from 2.54 mm to 12.7 mm with profiles from 0.64 mm to 5.33 mm Beta from 3000 K to 5000 K High-temperature operation to + 150 C Dissipation constants from 3 mw/C to 17 mw/C Thermal time constants down to 5 s RoHS compliant Available in insulated and non-insulated configurations Target Applications: Temperature measurement, compensation, and control in fan motor controls, fluid levels, and temperature sensors in a wide range of end products Key Specifications: Part Resistance R-T Diameter Profile Dissipation Thermal time number 25 C ( ) curve (mm) (mm) constant (mW/C) constant (s) 5DA4R0K 4 A 12.7 1.65 14 60 5DA5R0K 5 A 12.7 2.0 15 70 2DA100K 10 A 5.1 0.64 7 18 3DA100K 10 A 7.6 1.5 8 48 5DA100K 10 A 12.7 3.8 17 120 3DA150K 15 A 7.6 2.29 8 55 2DA200K 20 A 5.1 1.27 7 20 1DA300K 30 A 2.5 0.51 3 5 2DA300K 30 A 5.1 1.91 7 25 1DA500K 50 A 2.5 0.76 3 6 2DA500K 50 A 5.1 3.05 7 30 3DB500K 50 B 7.6 0.64 8 35 4DB500K 50 B 10.2 1.14 9 50 1DA101K 100 A 2.5 1.5 3 10 2DB101K 100 B 5.1 0.64 7 18 2DB151K 150 B 5.1 0.89 7 19 2DB201K 200 B 5.1 1.27 7 20 2DB301K 300 B 5.1 1.78 7 25 3DB301K 300 B 7.6 3.8 9 75 New Product Announcement June 2014 1DB501K 500 B 2.5 0.76 3 6 2DB501K 500 B 5.1 3.05 7 30 4DC501K 500 C 10.2 1.78 9 65 1DB102K 1,000 B 2.5 1.5 3 10 2DC102K 1,000 C 5.1 0.89 7 18 3DC102K 1,000 C 7.6 2.0 8 48 1DB202K 2,000 B 2.5 3.05 4 14 2DC202K 2,000 C 5.1 1.78 7 25 2DC302K 3,000 C 5.1 2.54 7 30 3DC302K 3,000 C 7.6 5.33 10 90 2DC402K 4,000 C 5.1 3.18 7 32 1DC502K 5,000 C 2.5 1.02 3 8 2DC502K 5,000 C 5.1 4.06 8 36 1DC103K 10,000 C 2.5 2.0 4 12 2DE103K 10,000 E 5.1 1.02 7 17 3DE103K 10,000 E 7.6 2.16 8 48 2DE203K 20,000 E 5.1 1.91 7 20 2DE303K 30,000 E 5.1 2.92 7 25 1DE503K 50,000 E 2.5 1.27 3 6 2DE503K 50,000 E 5.1 4.83 7 30 1DE104K 100,000 E 2.5 2.41 3 9 The Context: Recently acquired from Measurement Specialties (formerly RTI Electronics), Ametherm s NTC disc thermistors feature a wide range of resistance values, with precision tolerances to 1 %. The devices feature dissipation constants from 3 mw/C to 17 mw/C and thermal time constants down to 5 s. Providing designers with a cost-effective alternative to thermocouples in precision circuits, the NTC disc thermistors deliver high stability and maximum sensitivity for temperature measurement, compensation, and control in a wide range of applications. Availability: Offered through Sager, Dexter Magnetic Technologies, and PUI, samples and production quantities of the NTC disc thermistors are available now, with factory lead times of six weeks. Datasheets: Download this New Product Announcement as a PDF: