PTKM250-59

Fixed inductors – PTKM250-59 – are commonly used in electronic circuit designs, such as for radio frequency (RF) applications, to create an inductor circuit for tuning, impedance matching, or low- or high-frequency filtering. The PTKM250-59 fixed inductor has a nominal inductance of 250 micro-henries, a maximum DCR (direct current resistance) of 59 milliohms, and an operating temperature range of -25 to 125 degrees Celsius.

PTKM250-59 fixed inductors are non-polarized aluminum electrolytics with the same electrical characteristics in both directions. They are encased in epoxy hermetic seal, with a heavy-duty, two-part 40 mm overall length and 14 mm body diameter. The PTKM250-59 inductor is designed with an open-air coil top to reduce temperature rise and a copper cone seal to reduce noise. The internal construction consists of two layers of aluminum wrapped around a foil winding and a ceramic core.

The operating principle of PTKM250-59 fixed inductors is based on Faraday\'s law of induction, which states that when the electrical current passes through a conductor, a magnetic field is produced around the conductor. This magnetic field varies in intensity and size depending on the intensity of the electrical current. As the current increases, the magnetic field becomes stronger, resulting in an increased inductance. The inductance of the PTKM250-59 inductor is mainly determined by the coil geometry, including its length and the size of the core.

The PTKM250-59 fixed inductor is used in high-frequency applications ranging from 50 MHz to 125 MHz, such as radios, TVs, cellular phones, wireless communications, amplifiers, and circuit designs. It is designed to provide an inductor circuit for tuning, impedance matching, or low- or high-frequency filtering. The inductor has a wide range of uses, such as radio receivers, transmitters, antenna matching networks, and low noise amplifiers. The core material and geometry also determine the quality factor (Q) of the inductor, which is a measure of how efficiently the inductor stores and releases energy. The level of resistance (DCR) also plays an important role in determining the performance of the circuit, as it affects the amount of power delivered to the load.

In conclusion, PTKM250-59 fixed inductors are non-polarized aluminum electrolytic components with a nominal inductance of 250 micro-henries, a maximum DCR of 59 milliohms, and an operating temperature range of -25 to 125 degrees Celsius. The operating principle is based on Faraday’s law and the inductor is used in high-frequency applications for tuning, impedance matching, or low- or high-frequency filtering. The main characteristics of the inductor are its core material and geometry, plus its resistance, which should be as low as possible for maximum efficiency.