BB659CH7902XTSA1

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Capacitance @ Vr, F:	2.75pF @ 28V, 1MHz
Capacitance Ratio:	15.3
Capacitance Ratio Condition:	C1/C28
Voltage - Peak Reverse (Max):	30V
Diode Type:	Single
Q @ Vr, F:	--
Operating Temperature:	-55°C ~ 150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	SC-80
Supplier Device Package:	PG-SCD80-2
Base Part Number:	BB659

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Variable Capacitance (Varicaps, Varactors):

The BB659CH7902XTSA1 is an example of a variable capacitance diode, otherwise known as a varicap or varactor. This type of diode is a special device with an inherently variable capacitance which is often used in RF tuning, voltage controlled oscillators, and automatic frequency control devices.

Basics of Variable Capacitance Diodes:

Unlike standard diodes, variable capacitance diodes do not conduct electricity; instead, they are designed to have variable capacitance based on the applied reverse-bias voltage. The simplest form of varicap is a reversed-biased PN junction diode with two metal plates and two terminals attached to the diode leads. When a reverse voltage is applied across the diode, it increases the junction capacitance due to the increased space charge at the junction. The junction capacitance is powerful and is often used for frequency control.

Working Principle of BB659CH7902XTSA1:

The BB659CH7902XTSA1 variable capacitor has a wide frequency range, low input capacitance, and low code capacitance variation which makes it ideal for most applications. It has a symmetrical pin configuration, allowing it to be used in two directions, and its unique high dielectric strength feature allows it to operate in very high-voltage applications.The BB659CH7902XTSA1 has a built-in voltage limiting structure which makes it very resistant to reverse voltages up to 4 volts, making it a suitable choice for low-power operations. In addition, its reverse p-n junction structure gives it a tracking ratio of 1.3, making it a great choice for applications requiring wide frequency range and small change.

Applications of BB659CH7902XTSA1

The BB659CH7902XTSA1 variable capacitance diode is commonly used in radio frequency (RF) applications such as radio tuning and control, voltage controlled oscillators (VCOs), automatic frequency control (AFC) devices, and phase-locked loops (PLLs). It is also used in the manufacture of band-stop and notch filters. In addition, the BB659CH7902XTSA1 can be used in voltage controlled oscillators for precision amplitude modulation in communications equipment, modems, and test and measurement instruments. It is also commonly used in RF amplifiers and mixers, as well as high-speed switching operations. Finally, the BB659CH7902XTSA1 can be used in low-cost phase-locked loops, allowing designers to build less expensive designs while maintaining the necessary performance levels.

Conclusion:

The BB659CH7902XTSA1 is an example of a variable capacitance diode and is used in a variety of applications such as radio frequency tuning and control, phase-locked loops, and high-speed switching operations. It has a symmetrical pin configuration and a wide frequency range, making it suitable for a wide range of applications. Its reverse p-n junction structure gives it a tracking ratio of 1.3 and its built-in voltage limiting structure makes it resistant to reverse voltages up to 4 volts. With these features, the BB659CH7902XTSA1 makes an ideal choice for the majority of applications.

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