ON Semiconductor MMBV432LT1G
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- MMBV432LT1G
- ON Semiconductor
- DIODE TUNING SS 14V SOT23
- Diodes - Variable Capacitance (Varicaps, Varactors)
- MMBV432LT1G Datasheet
- TO-236-3, SC-59, SOT-23-3
- Tape & Reel (TR)
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Lead free / RoHS Compliant - 7905
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What is MMBV432LT1G
ON Semiconductor Part Number MMBV432LT1G（Diodes - Variable Capacitance (Varicaps, Varactors)）, developed and manufactured by ON Semiconductor, distributed globally by Jinftry. We distribute various electronic components from world-renowned brands and provide one-stop services, making us a trusted global electronic component distributor.
MMBV432LT1G is one of the part numbers distributed by Jinftry, and you can learn about its specifications/configurations, package/case, Datasheet, and other information here. Electronic components are affected by supply and demand, and prices fluctuate frequently. If you have a demand, please do not hesitate to send us an RFQ or email us immediately [email protected] Please inquire about the real-time unit price, Data Code, Lead time, payment terms, and any other information you would like to know. We will do our best to provide you with a quotation and reply as soon as possible.
MMBV432LT1G Specifications
- Part NumberMMBV432LT1G
- CategoryDiodes - Variable Capacitance (Varicaps, Varactors)
- ManufacturerON Semiconductor
- DescriptionDIODE TUNING SS 14V SOT23
- PackageTape & Reel (TR)
- Series-
- Operating Temperature125°C (TJ)
- Mounting TypeSurface Mount
- Package / CaseTO-236-3, SC-59, SOT-23-3
- Supplier Device PackageSOT-23-3 (TO-236)
- Diode Type1 Pair Common Cathode
- Voltage - Peak Reverse (Max)14 V
- Capacitance @ Vr, F48.1pF @ 2V, 1MHz
- Capacitance Ratio2
- Capacitance Ratio ConditionC2/C8
- Q @ Vr, F150 @ 2V, 100MHz
Application of MMBV432LT1G
MMBV432LT1G Datasheet
MMBV432LT1G Datasheet , Tape & Reel (TR),125°C (TJ),Surface Mount,TO-236-3, SC-59, SOT-23-3,SOT-23-3 (TO-236),1 Pair Common Cathode,14 V,48.1pF @ 2V, 1MHz,2,C2/C8,150 @ 2V, 100MHz
MMBV432LT1G Classification
Diodes - Variable Capacitance (Varicaps, Varactors)
FAQ about Diodes - Variable Capacitance (Varicaps, Varactors)
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1. Is a diode a variable capacitor?
The diode itself is not a variable capacitor, but a varactor diode has the characteristic of variable reactance and can be regarded as a special variable capacitor.
A varactor diode is a special diode made by using the characteristic that the size of the junction capacitance changes with the applied voltage when the PN junction is reverse biased. When the reverse bias voltage increases, the junction capacitance decreases; conversely, the junction capacitance increases. The capacitance of this diode is generally small, with a maximum value of tens of picofarads to hundreds of picofarads, and the ratio of maximum capacitance to minimum capacitance is about 5:1. Varactors are mainly used in high-frequency circuits for automatic tuning, frequency modulation, and phase modulation, such as as variable capacitors in the tuning circuit of a television receiver.
The working principle of a varactor diode is based on the reverse bias and charge accumulation effect of a PN junction. When a reverse voltage is applied to a PN junction, the charge accumulates to form a barrier layer similar to a capacitor. As the reverse voltage changes, the thickness of the barrier layer changes, resulting in a change in the junction capacitance. This phenomenon of dynamic capacitance change with reverse voltage enables varactor diodes to play an important role in high-frequency circuits. -
2. What is a variable capacitor?
Variable capacitor, also known as variable capacitor, is a capacitor whose capacitance can be adjusted within a certain range. Its working principle is to change the capacitance value by changing the relative effective area or distance between the pole pieces. Common variable capacitors include mechanical, electronic and piezoelectric types.
Classification
Mechanical variable capacitor: Change the capacitance value by rotating or moving the metal plate.
Electronic variable capacitor: Change the capacitance value by changing the reverse voltage of the PN junction.
Piezoelectric variable capacitor: Use certain crystal materials to produce polarization when subjected to mechanical stress, thereby changing the capacitance value. -
3. What effect does capacitance have on diodes?
The effect of capacitance on diodes is mainly reflected in the following aspects:
Capacitance effect: Diodes have capacitance effect, mainly including barrier capacitance (CB) and diffusion capacitance (CD). Barrier capacitance is formed by the difference in conductivity on both sides of the PN junction, and its capacitance changes with the applied voltage. Diffusion capacitance is the charge accumulation effect formed by the diffusion of carriers in the P region and the N region when the diode is forward biased.
Equivalent circuit: In order to simplify circuit analysis, the diode can be simulated by an equivalent circuit. In a DC circuit, the ideal diode model can be regarded as an ideal switch, which is equivalent to a closed switch when forward biased and an open switch when reverse biased.
Series effect: When a capacitor is connected in series with a diode, a short current spike may occur, especially in a DC circuit. But this usually does not directly cause the capacitor to burn out unless the current is very large or the capacitor quality is very poor. In an AC circuit, the impedance of the capacitor changes with frequency, which may affect the working state of the circuit, but will not directly cause the capacitor to burn out.
Parallel effect: When a capacitor is connected in parallel with a diode, the connection of the capacitor does not interfere with the normal operation of the diode, nor does it directly cause the capacitor to burn out. In this case, the capacitor mainly plays a filtering or energy storage role.
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