39 Ohm 0.5W Carbon Film Resistor - 5% Tolerance (Pack of 5)

Product Description The 39 Ohm 1/2 Watt Resistor is a high-durability passive component designed for low-resistance applications where standard 1/4W resistors might overheat. With an upgraded 0.5W power rating, it provides superior heat dissipation, making it ideal for current sensing, base-biasing in power transistors, and signal termination. These resistors feature a 5% tolerance and stable carbon film construction, providing a reliable resistive barrier for both professional PCB assembly and robust educational prototyping.

Key Features

• Higher Thermal Capacity: Rated at 0.5 Watts, allowing for safe operation in low-ohmic paths with higher current throughput.

• Low-Impedance Precision: Optimized for minimal voltage drops, perfect for shunt applications and snubber circuits.

• Breadboard Friendly: Features sturdy axial leads that ensure a secure mechanical connection in solderless breadboards.

• Instant Identification: Clearly marked with a 4-band color code (Orange, White, Black, Gold) for rapid manual verification.

• Flame-Retardant Coating: Coated with a protective lacquer to enhance safety and prevent oxidation in humid conditions.

Technical Details

• Maximum Working Voltage: Rated for stable operation up to 350V AC/DC in standard circuit environments.

• Overload Surge Capacity: Can withstand short-duration peak surges up to 700V without failure.

• Operating Temperature Range: Reliable performance maintained across a range of -55°C to +155°C.

• Temperature Coefficient: Typically rated at ±450 ppm/°C, ensuring minimal resistance drift during thermal load.

• Dielectric Strength: Provides high insulation protection up to 500V AC between the element and surroundings.

• Lead Material: Solder-plated copper-clad steel leads for maximum conductivity and mechanical pull-strength.

• Resistance Stability: Engineered to maintain values within ±3% after 1,000 hours of continuous load.

• Body Construction: Optimized axial size facilitates superior air convection compared to smaller 1/4W resistors.

• Environmental Standards: Fully RoHS compliant and lead-free for modern electronic assembly.

• Low Parasitic Inductance: Suitable for high-speed switching power supplies and basic signal damping.

• Moisture Protection: Sealed with multiple epoxy layers to prevent oxidation of the carbon element.

• High Frequency Performance: Low parasitic capacitance makes it suitable for high-speed digital logic isolation.

• Voltage Stability: Maintains a consistent resistance value even under fluctuating voltage levels.

• Standard Precision: Class J (±5%) providing a cost-effective and reliable solution for general electronics.

• Solderability: Meets industrial standards for both manual soldering and automatic wave soldering.