SDR0503-272JL

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Fixed Inductors play a very important role in applications such as power supplies, motor control, feedback control systems and signal conditioning. SDR0503-272JL is a kind of Fixed Inductors, which is quite popular for its versatility and long-term reliability. This paper will explain its application field and working principle in details.

Application Field of SDR0503-272JL

SDR0503-272JL is a surface mount, low profile, shielded, high inductance Fixed Inductors. It is designed for magnetically sensitized circuits, which include intermediate frequency (IF) transformer, active filter and low voltage switching circuits. Because of the magnetically shielded structure, it can be used in cellular phone and computer, and its self-resonant frequency is up to 4GHz. Additionally, it also has excellent performance in high current circuits. And because of its excellent high-frequency characteristics, voltage standing wave ratio (VSWR) and the reflection coefficient (S11) from 1GHz lower than 1.2.

Besides, SDR0503-272JL’s performance is well in high-frequency circuits. It has good pulse response and low signal distortion. With good power balance and compliance with RF semiconductor manufacturing processing, it is widely applied in high-frequency circuits, such as VHF/UHF signal amplifiers, wireless infrastructure, transceiver and Bluetooth modules, etc.

Working Principle of SDR0503-272JL

SDR0503-272JL Fixed Inductors are commonly constructed using copper wire or windings in a ferromagnetic core. The amount of inductance produced depends on the number of turns of the wire or windings, the cross-sectional area of the core material, and the permeability of the core material. When the current flowing through the coil changes, a voltage is induced in the coil in the opposite direction, which is called back electromotive force (Back EMF). The Back EMF is always opposed to the applied voltage across the coil and is proportional to the rate of change of current.

For SDR0503-272JL Fixed Inductors, the flowing current generates a magnetic field around the coil. The magnetic field creates a force that tends to oppose any change in the current, so when the current increases a force is generated that tries to stop the increase. The opposite force is generated when the current decreases. This creates an inductive reactance, which results in a voltage drop across the inductor. The voltage drop is inversely proportional to the frequency of the current and is equal to the ratio of the frequency of current and the inductance.

SDR0503-272JL is usually combined with a capacitor to form a resonant circuit, which is called a tuned circuit. In a tuned circuit, the capacitor and the inductor are connected in opposite phase, and the resonant frequency is the frequency at which the current will be in phase with the voltage across the device. The tuned circuit can be used in many applications, such as filters, oscillators, and amplifiers.

In conclusion, SDR0503-272JL is widely used in surface mount low profile circuits due to its reliability, magnetically shielded structure, high current applications and excellent pulse response and low signal distortion. Its application field includes high-frequency circuit, VHF/UHF signal amplifier, wireless infrastructure, Bluetooth module, etc. The working principle of SDR0503-272JL relies on the ratio of the frequency of current and the inductance generated when current is changed.

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