A 5W1ΩJ cement resistor is a high-power, wirewound component encased in a heat-proof ceramic and cement body. It handles up to 5 watts of power, provides a resistance of 1 ohm (1Ω), and has a tight tolerance of ±5% (represented by the letter "J").

Specifications

• Resistance: 1Ω
• Power Rating: 5W, suitable for moderate power dissipation 
• Tolerance: ±5%, indicated by the letter 'J' 
• Composition: Wirewound or cement, providing thermal stability and durability 
• Mounting Type: Available in through-hole axial, SMD (surface-mount), and radial lead configurations 
• Temperature Coefficient: Typically ±50 ppm/°C for wirewound types 
• Operating Temperature Range: Approximately -55°C to 275°C depending on the manufacturer 
• Non-Inductive Options: Some wirewound versions are non-inductive, reducing parasitic inductance in high-frequency applications