BB184,115 Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Capacitance @ Vr, F:	2.13pF @ 10V, 1MHz
Capacitance Ratio:	7
Capacitance Ratio Condition:	C1/C10
Voltage - Peak Reverse (Max):	13V
Diode Type:	Single
Q @ Vr, F:	--
Operating Temperature:	-55°C ~ 125°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	SC-79, SOD-523
Supplier Device Package:	SOD-523
Base Part Number:	BB184

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Introduction

BB184,115 is a variable capacitance diode known as Varicap or Varactor. These diodes are used to store and retrieve information in various electronic applications, such as in RF circuits and tuners, high-frequency oscillators, and DC-DC converters.

Application Field

BB184,115 Varicap diodes are commonly used in oscillators, frequency multipliers, and tuners to change the frequency of an RF signal. The diode is connected in series with another capacitor, and when voltage is applied to the diode, the capacitance varies and affects the oscillation frequency. Varicap diodes are popularly used in FM transmission and reception circuits.Besides, Varactors are often used in voltage multipliers, voltage sensing, and peak detectors. A voltage multiplier is a circuit that multiplies a DC input voltage to a much higher DC voltage. The circuit uses a cascade of capacitors and Varicaps to strengthen the weak incoming voltage and transform it into a higher voltage. Varicaps are also used to enhance the dynamic range of amplifiers. The capacitor increases the efficiency of amplifiers at high frequencies.

Working Principle

BB184,115 Varicap diodes have a variable capacitance which depends on the reverse bias potential applied to them. This device comprises a silicon semiconductor material with built-in capacitance between the anode and cathode electrodes. When a voltage is applied across the terminals, the capacitance varies depending on the voltage applied. The device can store and retrieve information depending on the reverse bias potential.BB184,115 Varicaps typically have a capacitance range of 25 ~ 1000pF. The capacitance varies with the applied voltage and changes the frequency of the circuit accordingly. When the diode is reverse-biased, the capacitance will decrease and the frequency will increase; and conversely, when the diode is forward- biased, the capacitance will increase and the frequency will decrease. The range of the applied voltage depends on the design of the specific Varicap diode; usually, it requires between 1V and 15V for the full range of the capacitance. The switching time of the capacitor is a few nanoseconds; this fast switching speed is essential to many electronic circuit applications.

Conclusion

BB184,115 Varicap diodes have a wide variety of uses in several electronic applications. These diodes are used as frequency-control elements in oscillators, frequency multipliers, and tuning circuits. They are also used in voltage multipliers and peak detectors, as well as to enhance the dynamic range of amplifiers. The working principle of BB184,115 Varicaps is that the applied voltage affects the capacitance, thereby changing the frequency of the circuit. This device is a type of semiconductor with a built-in capacitance between the anode and cathode electrodes. Its high switching time allows it to be used in quick reaction electronic circuits.

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