SMV1213-040LF

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance @ Vr, F:	5.5pF @ 4V, 1MHz
Capacitance Ratio:	5
Capacitance Ratio Condition:	C1/C4
Voltage - Peak Reverse (Max):	12V
Diode Type:	Single
Q @ Vr, F:	--
Operating Temperature:	--
Mounting Type:	Surface Mount
Package / Case:	0402 (1006 Metric)
Supplier Device Package:	0402

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Introduction to SMV1213-040LF

The SMV1213-040LF Varactor Diode is a variable capacitance diode from NXP Semiconductors. It is a multipurpose diode used for many different applications such as voltage-controlled oscillators, filters, and automatic frequency control circuits.

Features of SMV1213-040LF

The SMV1213-040LF is a low frequency varactor with a capacitance range from 1.6 to 40 pF, and a built-in series resistance of 700 ohms. It is also constructed with anode and cathode areas of 2mm x 1.5mm. The SMV1213-040LF is designed with the utmost reliability, its temperature operation range (-55°C to 150°C) allows this diode to be used in any kind of environment. It has a voltage breakdown of 40V, which allows for larger voltage swings in applications. This diode also has a low leakage current rating of 50 nA.

Application Field of SMV1213-040LF

The SMV1213-040LF is suitable for use in high-performance applications such as Voltage Controlled Oscillators (VCOs) and FM receivers. VCOs are commonly used in remote control systems and surveillance equipment which require an oscillator to generate a specific frequency and can be adjusted by varying the voltage over the diode. The SMV1213-040LF also has a high stability, which allows them to perform accurately in these applications. This diode can also be used in automatic frequency control circuits, filtering applications, and as an accurate capacitance reference. The series resistance helps reduce the Q factor of an oscillating circuit. Filtering applications often require an accurate capacitance value, which the SMV1213-040LF can provide.

Working Principle of SMV1213-040LF

The working principle of the SMV1213-040LF is based on the physics of a capacitor. A capacitor consists of two metal plates separated by a dielectric material. In a variable capacitance diode, the voltage of the device is used to increase the capacitance value between the two plates. This process is known as Varactor Biasing. When the bias voltage is applied over the diode, electrons in the diode accumulate in the depletion region creating a higher capacitance. As the bias voltage increases, the capacitance increases. If the bias voltage is decreased the capacitance decreases. This is the basic working principle of the SMV1213-040LF Varactor Diode.

Conclusion

The SMV1213-040LF Varactor Diode is a very versatile and reliable diode used in many different applications. It has a high stability and temperature operating range as well as a low leakage current rating. It is also designed with a 700 ohms series resistance which allows for larger voltage swings in applications. The working principle of the SMV1213-040LF is based on the physics of a capacitor and can be used in voltage controlled oscillators, filters, automatic frequency control circuits, and as an accurate capacitance reference.

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