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Vishay PTC device with 30mm? pick-up area

Posted: 19 Jan 2005 ?? ?Print Version ?Bookmark and Share

Keywords:vishay intertechnology? positive temperature coefficient thermistor? ptc thermistor? bccomponents? 2322 673?

Vishay Intertechnology Inc. announced a new range of components that integrate two positive temperature coefficient (PTC) thermistors into a single surface-mount package. The new BC components 2322 673 xxxxx twin vertical surface mount PTC devices are constructed from a ceramic disc, reflow soldered to a lead-frame. This physical construction results in a flat pick-up area of 30mm?, which facilitates automated assembly.

In addition to reducing component count, Vishay said, the new 2322 673 xxxxx twin vertical PTC devices can reduce the board space required to implement overload protection in telecommunications applications by up to 65 percent. Maximum voltage rating for the devices is 240V, and components are available in variants with maximum trip times between 1.2s and 4s, and maximum current ratings ranging from 2.5A to 4A.

Fully compatible with automated pick-and-place assembly, and suitable for use in Pb-free soldering processes, these new components also help to reduce assembly time by providing pre-matched pairs of thermistors within the same package. This eliminates the need for resistance matching, explained the company.

The use of ceramic PTC technology confers high stability, fast response and recovery times, and the ability to sustain several trip cycles. This in turn allows the devices to conform to the more stringent requirements of the ITU K20-21-45 Edition 2003 specification for overvoltage and overcurrent protection for telecommunications equipment.

All of the new devices are rated to function across the industrial temperature range of -40C to 85C. In addition to the standard products, Vishay can produce custom versions based on the PTC technology on request.

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