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passives
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Improved resistors are ideal for circuit protection A new and improved series of low-cost, high-performance resistors from , provides excellent pulse withstand capabilities for circuitry associated with surges, high peak power or high energy - and lightning protection - while remaining highly stable. Bring on the pulses!
The advanced characteristics of the highly reliable 0.25W, 250V CBT25, and the 0.5W, 350V CBT50, have been achieved by selecting materials featuring optimum physical properties and by new developments in the manufacturing process. |
As a direct replacement for hot moulded carbon composition resistors, the CBT offers a much higher pulse handling capability. Since constructed utilising a solid carbon rod composition, the entire rod conducts rendering the device perfect for absorbing high energy pulses. For example, in the case of a fast, high-energy pulse of <100mS, the conductive element is required to withstand all of the energy and absorb all of the heat generated. However, the very construction of a film or wire-wound resistor restricts its energy-handling capability. By contrast, the higher thermal mass of the solid carbon resistor provides it with a substantially higher energy handling capability. Affording the benefit of small size, with a broad range of resistance values and tolerances, from 1R0 to 5M6 for the CBT25 and 1R0 to 22M for the CBT50, the new CBTSeries resistor has a very wide operating temperature range of -55 up to 125°C. The insulation resistance for both versions is 1000M minimum.
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