A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. this one is Cement Resistor DIP 10W 15 Ohm 15R 5% Exceptionally small, sturdy, and reliable in a Ceramic flame retardant package

Specifications:

Ceramic flame retardant package

Sealed with a special quartz mixed sand cement

Excellent moisture resistance

High-temperature stability

5% tolerance

Temperature Range: -55°C ~ +155°C