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VOLUME -25 NUMBER 5
Publication Date: 05/1/2010
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Electronic Mfg. Services
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Special Features: Components and Distribution
Product Preview: EDS
May 2010 Issue
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TDK-EPC Offers PTC SMD Thermistors
Over-temperature-sensing thermistor chip.
Iselin, NJ — TDK-EPC, a group company of the TDK Corporation, has introduced a series of EPCOS SMD PTC thermistors for limit temperature measurement. They are available in case sizes 0805, 0603 and 0402. Compared to the standard series, these components employ a more homogeneous ceramic material, which enables them to provide excellent performance in reliability tests, and can be reflow and wave-soldered at temperatures of up to 280°C.
The thermistors have been qualified based on AEC-Q200 Rev-C and satisfy the rigorous requirements for use in automotive electronics applications involving frequent and rapid temperature changes. The types of the B59721A series in case size 0805 have response temperatures from 70 to 130°C in steps of 10 K. Their rated resistance is 680Ω. The response temperatures of the B59641A* (0603) and B59421A* (0402) series are from 75 to 145°C and from 75 to 135°C respectively, also in steps of 10 K. The rated resistance of these components is 470Ω. The maximum permissible operating voltage for all types is 32VDC. UL approval is pending.
Possible applications for these temperature limit sensors are power supplies such as AC/DC and DC/DC converters, battery chargers and packs or lamp ballasts. The SMD PTC thermistors can be used in the fan controllers of notebooks to avoid reaching critical temperatures. In automotive electronics, they are suitable for applications such as the temperature monitoring of LED-based lighting systems.
They can be used to provide over-temperature protection in equipment for industrial, consumer and automotive electronics and IT applications.
Contact: TDK-EPC, 485B Route 1 South, Suite 200, Iselin, NJ 08830
800-888-7729 or 732-906-4395 fax: 732-632-2830 Web:
See at EDS Booth #3278P.
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