LQH31HN54NK03L

The LQH31HN54NK03L is a high-performance inductor manufactured by Murata Electronics, designed for use in various electronic applications, particularly in power supply circuits and RF (radio frequency) applications. Here’s a detailed description of its key features and specifications:

Physical Characteristics:

• Form Factor: The LQH31HN54NK03L is a surface-mount device (SMD) in a compact package, which allows for easy integration into printed circuit boards (PCBs).
• Dimensions: It typically measures around 3.2 mm x 3.2 mm x 2.5 mm, making it suitable for space-constrained applications.
• Weight: The inductor is lightweight, which is beneficial for portable electronic devices.

Electrical Specifications:

• Inductance Value: The inductor has a nominal inductance of 5.4 µH, which is suitable for various filtering and energy storage applications.
• DC Resistance (DCR): The DCR is low, typically around 0.045 ohms, which minimizes power loss and improves efficiency in power circuits.
• Rated Current: The inductor can handle a rated current of up to 3.0 A, making it suitable for applications that require significant current handling capabilities.
• Saturation Current: The saturation current rating is an important specification, indicating the maximum current the inductor can handle before its inductance significantly drops. This is typically around 3.5 A for this model.

Performance Characteristics:

• Temperature Range: The LQH31HN54NK03L operates effectively over a wide temperature range, typically from -40°C to +125°C, ensuring reliability in various environmental conditions.
• Self-Resonant Frequency (SRF): The inductor has a high self-resonant frequency, which allows it to perform well in high-frequency applications, reducing the risk of unwanted resonance effects.

Applications:

• Power Supply Circuits: Ideal for use in DC-DC converters, buck converters, and other power management applications.
• RF Applications: Suitable for RF circuits, including filters and oscillators, due to its high-frequency performance.
• Consumer Electronics: Commonly used in smartphones, tablets, and other portable devices where space and efficiency are critical.

Additional Features:

• Shielded Design: The inductor features a shielded construction, which helps to reduce electromagnetic interference (EMI) and enhances performance in sensitive applications.
• RoHS Compliance: The LQH31HN54NK03L is compliant with RoHS standards, ensuring it is free from hazardous substances and environmentally friendly.

In summary, the LQH31HN54NK03L from Murata Electronics is a versatile and efficient inductor that meets the demands of modern electronic applications, combining compact size, high current handling, and excellent performance characteristics.