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

Product Description 

The 3.3 Ohm 1/2 Watt Resistor is a heavy-duty passive component designed for low-resistance circuit applications requiring high current stability. With an upgraded 0.5W power rating, it provides twice the thermal dissipation capacity of standard resistors, making it ideal for current sensing, power supply filtering, and protection in motor driver circuits. Featuring a 5% tolerance and high-grade carbon film construction, these resistors are essential for managing inrush current and protecting sensitive semiconductors from electrical stress.

Key Features

• High Power Dissipation: Rated at 0.5 Watts, allowing for safe operation in low-ohmic, high-current paths where 1/4W resistors might overheat.

• Low Ohmic Utility: Perfect for use as a shunt resistor to measure current or as a fusible safety element in power stages.

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

• Standard Color Identification: Marked with a clear 4-band code (Orange, Orange, Golden, Gold) for rapid manual verification.

• Flame-Retardant Coating: Finished with a protective lacquer layer to enhance safety and prevent oxidation in humid environments.

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 immediate failure.

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

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

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

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

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

• Enhanced Body Construction: Larger axial dimensions facilitate superior air convection and lower surface temperatures.

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

• 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 in humid conditions.

• Failure Mode: Designed to fail open-circuit during extreme overloads to protect sensitive downstream ICs.

• Precision Class: Standard Class J (±5%) providing a cost-effective solution for power-hungry projects.

• Solderability: Compatible with both manual soldering and industrial wave soldering processes.

• Indefinite Shelf Life: Protective lacquer ensures leads remain viable for long-term storage without degradation.