: The RTT253900FTE is a surface-mount resistor from RALEC consisting of a chip resistor of 390 ohms ±1% with a power rating of 1 Watt. It is RoHS compliant, being free of hazardous substances such as lead and cadmium. It is designed to be used in electronic circuits and systems for various purposes such as current and voltage limitation, voltage division, signal attenuation, and others. This reliable standard resistor is rated for a wide operating temperature range from -55 to + 155 °C. The resistor is ideal for use in a variety of applications, including automotive, telecommunication, consumer electronic, military and aerospace systems.