A 5W47RJ cement resistor is a 5-watt wirewound power resistor with a resistance value of 47 ohms (Ω) and a resistance tolerance of ±5% (denoted by the letter "J").

Electrical Characteristics

• Resistance: 47 Ω
• Tolerance: ±5% (J code) meaning the actual resistance can vary by 5%
• Power Rating: 5 W (handles higher current and dissipates more heat than standard carbon-film resistors.
• Voltage Rating: 500 V
• Temperature Coefficient: ±300 ppm/°C
• Maximum Operating Temperature: 155°C
• Minimum Operating Temperature: -55°C
• Element Material: Wirewound
• Pulse Withstanding Capability: Designed to handle power surges (up to 12 kV in some tests)