IHLP5050FDERR40M01

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Fixed inductors are commonly used in various DC/DC and AC/DC power conversion applications and as components in power supply or filters for various electronic circuits. They are designed to provide a predictable, discrete level of inductance.

The IHLP5050FDERR40M01 fixed inductor is part of a range of inductors from TDK Corporation’s IHLP-5050 family of low-profile, surface mount inductors. It has a rated inductance of 40 μH and a DC current rating of 11.1 Arms (max). The inductor has an operating temperature range of -40 to +125 °C and is constructed using an iron-based ferrite core with a high-temperature (150°C, 300°F) flame-retardent coating. The inductance is stable over a wide temperature range.

The IHLP5050FDERR40M01 inductor’s application field includes DC/DC power converters, switching power supplies, PWM converters, switching regulators, and audio filters.

The working principle of a fixed inductor is similar to that of a transformer. When a current (I) flows through the inductor coil, an opposing inductive field (F) is created in the core and an electromotive force (E) is induced in the opposite direction. This produces a counter EMF that tends to reduce the flow of current in the coil. As the coil current is reduced, the EMF in the coil decreases and the current increases again until a balance is reached. This cycle is repeated and is called an induced EMF cycle.

The amount of inductance is dependent upon the number of turns in the coil and the core material used. The type of wire used in the coil also affects the inductance. The core material used affects the inductance by providing a path for the B-H curve. The B-H curve is the relationship between inductance (B) and current (H). A higher permeability core material increases the inductance and a lower permeability core material reduces the inductance.

The IHLP5050FDERR40M01 fixed inductor has a rated inductance of 40 μH. This value is much higher than the typical 10 to 15 microhenries range of conventional ferrite cores. The high inductance rating also offers greater control over the line and load conditions of power supply designs. In addition, the flame-retardant coating provides durability in harsh environments and allows for the inductor to be used in systems operating at high temperatures.

The IHLP5050FDERR40M01 fixed inductor is a convenient and cost effective solution for many DC and AC power applications. Its low profile design and high rated inductance make it an ideal choice for a variety of applications. Its reliability and flame-retardant coating provide flexibility in application design and long-term operation.

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