The Viking CR-05JA7---51K is a Chip Resistor - Surface Mount of size 0805, rated at 51KOhms ±5%, and designed for 1/8W (0.125W) power dissipation. It is RoHS compliant and is commonly used in power supplies, switch-mode circuits, signal integrator circuits, and amplifier/buffer circuits. The SMT package design allows for a compact size and low profile in a circuit board.