HF1008-121H

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Fixed inductors play an integral part in numerous power systems and circuit designs. From filtering to buffering impedance levels, the use of inductors facilitate the safe and efficient operation of a wide range of electronics from smart phones to home-theater systems. The HF1008-121H is a fixed inductor that has become a popular choice for designers and engineers due to its outstanding performance in applications that require low profile, high current, low inductance and low cost.

The HF1008-121H is an unshielded surface mount inductor with an indicated inductance of 332nH and an operating temperature range of -40°C to +85°C. It is manufactured with a composite construction of a ferrite core and copper windings. The inductance value is marked on the part and is guaranteed to be within 20% of the rated value.

The HF1008-121H is commonly used in applications such as DC-DC converters, DC-to-AC inverters, switching power supply circuits, converters, audio filters, mobile phone chargers and LCD TV circuits. In these applications, the inductor is often used to suppress any voltage spikes generated by sudden changes in current, to smooth the ripple current or filter out high frequency noise. Additionally, it is widely used in automotive and professional audio applications.

When installed properly, the HF1008-121H can withstand current levels of up to 6.5 Arms without any core saturation or reduction in inductance characteristics, ensuring that this part is perfect for space-critical boards. This is due to its low profile of 2.1mm in total height and its ability to operate in a wide range of temperatures. Furthermore, the inductor can operate with very low losses at frequencies up to 500MHz.

The working principle of the HF1008-121H is the same as for all other inductors. When electric current passes through the inductor, a magnetic field is generated. According to Faraday’s Law, whenever the magnetic field is changing, a voltage is induced in the inductor. This induced voltage is opposing the change of the current, thus, resisting changes in the current. Depending on the circuit design, this voltage is used either for energy storage/release or for filtering out high frequency noise.

Overall, the HF1008-121H is a high-performance, low-profile, versatile, and cost-effective inductor for power systems and circuit designs. Its composite construction and rectangular shape allow for board orientations that reduce inductance in unwanted directions. Additionally, the part has a wide operating temperature range, stable specifications over frequency and temperature cycles, and good inductance consistency.

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