The RTT125R1JTP is a 5.1-ohm, ±5% tolerance, 1/2-watt, 1210 surface-mount chip resistor manufactured by RALEC. It is thin, small, and heat tolerant, and is ideal for use in high-density semiconductor assemblies. It is RoHS compliant, meaning it is manufactured using only lead-free materials. It has an operating temperature range of -55 to +155°C and is resistant to moisture, heat, and other environmental influences.