ZC930TA Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Capacitance @ Vr, F:	2.9pF @ 4V, 50MHz
Capacitance Ratio Condition:	--
Voltage - Peak Reverse (Max):	12V
Diode Type:	Single
Q @ Vr, F:	200 @ 4V, 50MHz
Operating Temperature:	--
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23-3
Base Part Number:	ZC930

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Introduction

Diodes of the Variable Capacitance (Varicaps, Varactors) type are specialized electronic devices that can be used to control the capacitance of a circuit through a change in the reverse bias voltage applied to them. ZC930TA is a special type of Varicap diode, which makes use of the advantages of the Variable Capacitance (Varicaps, Varactors) type to achieve a broad capacitance range and high linearity characteristics. This article will discuss the applications and working principle of the ZC930TA Varicap diode.

Applications

The ZC930TA Varicap diode is well-suited for use in voltage-controlled oscillators, filter tuning applications, video signal shaping and band-pass filter applications. It is also commonly used in frequency modulation and phase-locked loop applications. Due to its characteristics, the Varicap diode provides high linearity and low harmonic distortion levels when used in a variety of electronic circuits.The ZC930TA has a wide capacitance range, reaching from 220 pF at 0 V bias to 24 pF at -20V bias. This makes it well-suited for a range of applications, including frequency tuning, AC coupling, DC blocking and signal shaping. The linearity and low harmonic distortion of the Varicap diode also make it perfectly suited for FM and phase-locked loop applications.

Working Principle

The Varicap diodes work on the principle of modifying the value of the internal junction capacitance with a change in reverse voltage bias. This is achieved by varying the width of the depletion layer with the reverse bias voltage, thereby changing the capacitance of the diode. When the reverse bias voltage is varied between 0 V to -20 V, the internal junction capacitance of the ZC930TA Varicap diode varies from 220 pF to 24 pF. This provides a wide selection of capacitance values, enabling the diode to be used in a variety of applications where the capacitance needs to be precisely controlled.When the reverse bias voltage is applied to the Varicap diode, the capacitance of the diode increases. This is because the width of the depletion region is decreased, allowing the carriers to move closer to the junction, thereby decreasing the area of the depletion region and reducing the capacitance value. On the other hand, when the reverse bias voltage is increased, the capacitance of the diode decreases. This is because the width of the depletion region is increased, allowing the carriers to move further away from the junction, increasing the capacitance value. This allows the Varicap diode to be used in a range of applications requiring precise capacitance control.

Conclusion

The ZC930TA Varicap diode is an ideal component for a range of applications that require precise control over the capacitance of a circuit. This is due to its wide capacitance range and high linearity, as well as its ability to be operated with a low input reverse bias voltage. It is suitable for use in a variety of applications, including frequency tuning, AC coupling, DC blocking and signal shaping, as well as frequency modulation and phase-locked loop applications.

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