ZC933ATA Discrete Semiconductor Products

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Diodes – Variable Capacitance (Varicaps, Varactors) is a device which, depending on a reverse-biasing voltage, is capable of altering the capacitance between any two of its connected nets. Over the years, these devices have become extremely valuable in a number of applications, such as in filters, tuners, VCOs, and other electronic components which rely on great accuracy and flexibility when it comes to capacitance values. The ZC933ATA Variable Capacitance Diode is one such device, and it boasts great accuracy, fast tuning times, good linearity, low cost, and a wide voltage range.

The ZC933ATA Varicap’s listed applications include various TV tuners, filter circuits, baluns for Direct Broadcast Satellite applications, AM, FM and VHF modulators, and A/V receivers. Coupling the diode’s superior performance and build quality with its rich applications and features, it is no wonder why it is highly regarded by the electronics industry.

The ZC933ATA Varicap works by means of its reverse-biasing voltage. The varactor’s depletion layer, which is formed when a reverse current is running through it, functions as a “dielectric” to alter the capacitance. The depth and width of the depletion layer depends on the amount of current running through the diode, and thus the overall capacitance of the device can be accurately determined and adjusted by simply changing the current. This property makes the varicap ideal for applications that require precise adjustment and rapid tuning.

Another great feature of the ZC933ATA Varicap is its broad voltage range. The device can be used with a wide range of reverse-biasing voltages (from 5-30V) and can vary its capacitance from about 1pF to about 19pF with a maximum change in capacitance of 6.8pF (at 10V and 0.5uA). This range of operating voltages and exceptional linearity performance greatly increase the ZC933ATA’s flexibility and makes it an ideal choice for certain applications which require an adjustable capacitance device.

In short, the ZC933ATA Varicap is an exceptional device with great features and performance. Its accurate and linear tuning capabilities, wide operating voltage range, and economical cost have made it popular among the electronics industry and it is sure to see a great deal of use in the years to come.

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