The EVM3ESX50B52 with Variable Resistors ±25% 500Ohms ±250 ppm/°C SMD RoHS is an electronic part manufactured by Panasonic. It is a variable resistor with a resistance value of 500 Ohms and a tolerance of ± 25%. The resistor's temperature coefficient is ± 250 ppm/°C, meaning the resistance will vary by a maximum of ± 0.250% per degree Celsius change in temperature. The component is SMD packaged and RoHS compliant, which indicates that it is made without any hazardous substances.