A cement resistor 5W15RJ is a 5-watt power component with a resistance value of 15 ohms (15R) and a tight tolerance of ±5% (denoted by the letter "J"). It features a wirewound element sealed inside a ceramic and cement block for high heat resistance.

Electrical Specifications

• Resistance: 15 Ohms (15R)
• Power Rating: 5 Watts
• Tolerance: ±5% (indicated by the “J” in the part number)
• Voltage Rating: Approximately 500 V (typical for wirewound types)
• Temperature Coefficient: ±400 ppm/°C for wirewound types 

  , others (cement/ceramic) may vary slightly
• Type / Composition: Wirewound (TE Connectivity EP5W15RJ) or cement/ceramic horizontal for 5WR15J variants