To save component count in mains-input protection circuits, Welwyn Components has developed the EMC2 fusible resistor combining the pulse performance of a wirewound resistor with the quick fusing properties of metal-film technology.
[UKPRwire, Wed Jan 07 2009] To save component count in mains-input protection circuits, Welwyn Components has developed the EMC2 fusible resistor combining the pulse performance of a wirewound resistor with the quick fusing properties of metal-film technology.
Using a single EMC2, designers can replace the separate 240V fuse and input resistor traditionally used with a varistor or TVS to protect against line-voltage transients, limit inrush current, and ensure isolation in the event of potentially damaging faults. EMC2 resistors are UL1412 recognised, and are flameproof according to UL94-V0.
The EMC2 series is available in standard E12 resistance values from 4.7 Ohms to 68 Ohms, with 100ppm/°C temperature coefficient, and in 10% and 20% tolerance versions. The devices achieve a high power rating of 2W within a compact, axial-leaded construction of length 10mm and body diameter 4mm. The EMC2 series is aimed primarily at power supplies and battery chargers, and will operate in a wide variety of environments from –55°C to 155°C.
- ends -
About Welwyn Components
Welwyn Components Limited is a manufacturing subsidiary of technology group TT electronics plc, specialising in a wide range of multi-market resistive products, custom micro assembly & packaging technologies.
TT electronics plc is a focused, global electronics company supplying the world's leading manufacturers in the automotive, avionics, defence and industrial electronics markets. The Group operates in four key sectors: sensors and electronic systems, electronic components, electronic manufacturing services and secure power and industrial. TT electronics operates from headquarters based in Weybridge, Surrey. From this base the Group controls operations across the world in both developed and developing economies.
Additional information is available from our corporate website: http://www.ttelectronics.com/
For further information please contact:
Liz Blair, Marketing Manager, TT electronics European Components Division, Welwyn Electronics Park, Bedlington, Northumberland, NE22 7AA UK.
Tel: +44 (0) 1670 536749, Fax: +44 (0) 1670 829465 Email: info@welwyn-tt.com
Del.icio.us
Digg
Furl
Blinklist
Reddit