A 5W 51Ω cement resistor is a high-power, wirewound electronic component encased in a ceramic and cement body. It handles a maximum power dissipation of 5 Watts and provides a fixed resistance value of 51 Ohms (Ω) with a standard tolerance of ±5%.

Specifications

• Resistance: 51 ohms
• Power Rating: 5 watts, meaning it can safely dissipate up to 5 W of electrical power without overheating
• Tolerance: Typically ±5%, some options offer ±1% for precision applications
• Type: Commonly wirewound, metal oxide, or cement wirewound construction, which provides durability and stable resistance under high load 
• Voltage Rating: Many 5W resistors are rated for voltages up to 200–460 V depending on the manufacturer 
• Temperature Range: Usually capable of operating between -55°C to 200°C for flameproof designs