Temperature Sensors / Detectors / Transducers
PTC Thermistors provide max voltage rating of 240 V.
Press Release Summary:
BCcomponents 2322 673 xxxxx twin vertical SMD PTC devices integrate 2 positive temperature coefficient (PTC) thermistors into one package. They are constructed from ceramic disc, reflow soldered to lead-frame, which results in flat pick-up area of 30 mm² to facilitate automated assembly. Components are available in variants with max trip times from 1.2-4.0 sec and max current ratings from 2.5-4.0 A. All devices function across -40 to +85°C temperature range.
Original Press Release:
Vishay's New Twin PTC Thermistors Combine Two Components in One Surface-Mount Package, Provide Maximum Voltage Rating of 240 V and Maximum Current Ratings from 2.5 A to 4.0 A
MALVERN, PENNSYLVANIA - January 14, 2005 - Vishay Intertechnology, Inc. (NYSE: VSH) has announced a new range of components that integrate two positive temperature coefficient (PTC) thermistors into a single surface-mount package. The Vishay BCcomponents 2322 673 xxxxx twin vertical SMD 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 30 mm2, which facilitates automated assembly.
In addition to reducing component count, the new 2322 673 xxxxx twin vertical SMD PTC devices can reduce the board space required to implement overload protection in telecommunications applications by up to 65%. Maximum voltage rating for the devices is 240 V, and components are available in variants with maximum trip times between 1.2 s and 4.0 s and maximum current ratings ranging from 2.5 A to 4.0 A.
Fully compatible with automated pick-and-place assembly, and suitable for use in lead (Pb)-free soldering processes, the 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.
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 -40 °C to +85 °C. In addition to the standard products, Vishay can produce custom versions based on the PTC technology, on request.
Vishay, a Fortune 1,000 Company listed on the NYSE, is one of the world's largest manufacturers of discrete semiconductors (diodes, rectifiers, transistors, optoelectronics, and selected ICs) and passive electronic components (resistors, capacitors, inductors, and transducers). The Company's components can be found in products manufactured in a very broad range of industries worldwide. Vishay is headquartered in Malvern, Pennsylvania, and has operations in 17 countries employing over 26,000 people. Vishay can be found on the Internet at www.vishay.com.
