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

Product Description The 39k Ohm 1/2 Watt Resistor is a high-stability passive component designed for precise signal biasing and voltage division in medium-power electronics. With an upgraded 0.5W power rating, it offers superior thermal headroom compared to standard 1/4W resistors, ensuring the component remains cool during continuous operation. Featuring a 5% tolerance and rugged carbon film construction, it is the ideal choice for pull-up networks, RC filters, and analog reference circuits in both professional PCB designs and robust prototyping environments.

Key Features

• Enhanced Thermal Management: The 1/2 Watt rating provides double the power capacity of standard resistors, reducing resistance drift caused by heat.

• Universal Biasing Utility: A versatile value for setting operating points in transistor amplifier stages and signal conditioning.

• Sturdy Axial Leads: Features thicker, tin-plated leads optimized for a secure mechanical fit in solderless breadboards.

• Instant Value Identification: Marked with a clear 4-band color code (Orange, White, Orange, Gold) for rapid manual sorting.

• Flame-Retardant Coating: Finished with a protective lacquer to ensure safety during minor overloads 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 immediate failure.

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

• Temperature Coefficient: Typically rated at ±450 ppm/°C, providing high thermal stability during continuous use.

• Dielectric Strength: Offers 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.

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

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

• Low Parasitic Inductance: Suitable for high-speed signal conditioning and basic RF filtering.

• Moisture Protection: Sealed with multiple layers of epoxy to prevent oxidation of the carbon film in humid conditions.

• 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.

• Indefinite Shelf Life: Protective lacquer ensures leads and element remain viable for long-term storage.