VLF10040T-221MR81 Inductors, Coils, Chokes

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Fixed inductors are widely used in electronic circuits, particularly for power management. The VLF10040T-221MR81 is a fixed inductor from Vishay Ceramics. It is designed for DC-DC converters, power supplies, and switching power supplies.

The VLF10040T-221MR81 is a surface-mount inductor made with an iron-powder core. It is packaged in an epoxy-black molded body, and has an RoHS-compliant lead-free construction. This inductor offers a rated inductance range of 0.1µH to 100µH, and a maximum DC resistance of 0.221 ohm. It is rated for a maximum current of 40 amps, with an inductance tolerance of 20%.

The temperature range for this unit is -25°C to +100°C, and it can tolerate up to 4.9G of vibration and 2G of peak acceleration. Its saturation current is a maximum of 60A, and it does not require any minimum load current for magnetization. The maximum storage temperature of the VLF10040T-221MR81 is 150°C.

One common application for the VLF10040T-221MR81 is as a high-current, low-profile inductor in power management circuits. It can be used in DC-DC converters, DC-DC converters with magnetically-coupled bridgeless power factor correction, and other high-performance power supplies.

The operating principle of this inductor is based on Faraday’s Law of Electromagnetic Induction. When electric current passes through a coil of wire, a magnetic field is created. This magnetic field induces a voltage in any conductors or coils in the vicinity. This voltage can be used as a source of power or can be used to control other electrical devices.

When used in a circuit, the VLF10040T-221MR81 can act as either a step-up transformer or a step-down transformer. If used as a stepping-up device, it can increase the output voltage by passing electric current through its winding. Conversely, when used as a stepping-down device, it can decrease the output voltage by passing electric current through the winding in the opposite direction.

The VLF10040T-221MR81 from Vishay Ceramics is a surface-mount fixed inductor with a wide range of applications. It is well-suited for use in DC-DC converters and power supplies, where its high current rating and low resistance make it ideal for high performance power management. This unit uses Faraday’s Law of Electromagnetic Induction to operate as either a step-up or step-down transformer, which makes it a versatile and reliable component for many electronic circuits.

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