The recommended land pattern for the VLF10040T-470M1R7 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 4.5mm x 2.5mm, with a 1.5mm diameter hole in the center for the inductor's terminal.
The thermal derating of the VLF10040T-470M1R7 inductor is typically handled by reducing the maximum current rating as the ambient temperature increases. TDK Corporation provides a thermal derating curve in the datasheet, which shows the maximum current rating at different temperatures. Engineers should ensure that their design takes into account the expected operating temperature and adjusts the current rating accordingly.
The self-resonant frequency of the VLF10040T-470M1R7 inductor is not explicitly stated in the datasheet, but it can be estimated using the inductor's inductance value and the parasitic capacitance. Typically, the self-resonant frequency of an inductor is around 10-20 times its operating frequency. In this case, the self-resonant frequency would be around 100-200 MHz, assuming an operating frequency of 10 MHz.
The VLF10040T-470M1R7 inductor is designed to meet the vibration requirements of IEC 60068-2-6, which includes vibration testing up to 10G acceleration. However, engineers should still perform their own vibration testing to ensure that the inductor meets their specific application requirements. Additionally, they should consider using additional mechanical support or potting to ensure the inductor's reliability in high-vibration environments.
The VLF10040T-470M1R7 inductor has a tin-silver-copper alloy termination, which can be soldered using a standard reflow soldering process. The recommended soldering conditions are a peak temperature of 260°C, with a soldering time of around 3-5 seconds. Engineers should ensure that their soldering process meets these conditions to avoid damaging the inductor.
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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.
