PM1812-4R7J-RC is a surface-mount chip inductor from the PM1812 series designed for use in DC/DC converters, power supplies, and general applications. The inductor features a 4.7 µH inductance with ±5% tolerance, a ferrite core with copper wire coil, and an epoxy resin enclosure with tin terminals. It operates over a temperature range of -40°C to +125°C with a maximum temperature rise of 20°C and demonstrates high resistance to heat, humidity, mechanical shock, and pressure. The device is RoHS compliant and offers accurate dimensions for automatic surface mounting, making it ideal for compact power management circuits requiring reliable energy storage and filtering.