The recommended PCB land pattern can be found in the TDK Corporation's application note or on their website. It typically includes a rectangular pad with a size of around 2.5mm x 1.5mm, with a 0.5mm hole in the center for the inductor's terminal.
The thermal derating of the NLCV25T-4R7M-EFRD is typically handled by reducing the maximum current rating as the ambient temperature increases. The derating curve can be found in the datasheet or in TDK's application notes. As a general rule, the current rating should be reduced by 1.5% to 2% for every degree Celsius above 70°C.
The self-resonant frequency (SRF) of the NLCV25T-4R7M-EFRD is typically not specified in the datasheet, but it can be estimated using the inductor's inductance value and the parasitic capacitance. As a rough estimate, the SRF can be calculated using the formula: SRF = 1 / (2 * pi * sqrt(L * C)), where L is the inductance value and C is the parasitic capacitance.
To ensure the reliability of the NLCV25T-4R7M-EFRD in high-vibration environments, it is recommended to follow TDK's guidelines for vibration testing and to use a suitable PCB mounting method, such as soldering or using a vibration-resistant adhesive. Additionally, the inductor's terminals should be secured to the PCB using a suitable method, such as wire bonding or a terminal clamp.
The moisture sensitivity level (MSL) of the NLCV25T-4R7M-EFRD is typically specified as MSL 1, which means that the component can withstand a maximum of 30 days in a humidity-controlled environment before being soldered onto a PCB. It is recommended to follow TDK's guidelines for handling and storage to prevent moisture-related damage.
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About TDK
TDK-Lambda is a global supplier of power supplies and related products. It is a subsidiary of TDK Corporation, a leading electronics company based in Japan. TDK-Lambda specializes in designing and manufacturing a wide range of AC-DC power supplies, DC-DC converters, programmable power supplies, and EMC/EMI filters for various industries and applications.
