Skip to Content
  1. All products
  2. Resistance
  3. 12k Ohm 0.25W Carbon Film Resistor - 5% Tolerance (Pack of 5)
  4. Resistance
मूल्य सूची: Retail Price (B2C) मूल्य सूची
मूल्य सूची: Retail Price (B2C) मूल्य सूची
12k Ohm 0.25W Carbon Film Resistor - 5% Tolerance (Pack of 5)

12k Ohm 0.25W Carbon Film Resistor - 5% Tolerance (Pack of 5)

(0 review)
ComponentSpecification
Resistance Value12k Ohms (12,000 Ω)
Power Rating0.25 Watts (1/4 Watt)
Tolerance±5% (J Type)
ConstructionCarbon Film
Package TypeThrough-Hole (Axial)
QuantityPack of 5 Units
Price
₹ 8.47 ₹ 8.47
(Tax included)

Product Description: The 12k Ohm 1/4 Watt Resistor is a reliable passive component designed for precise current regulation and signal biasing. These carbon film resistors feature a 5% tolerance, ensuring consistent performance for general-purpose electronic applications. With a standard 0.25W power rating, they are ideal for pull-up/pull-down networks, RC timing circuits, and as base resistors for transistors in both hobbyist and professional projects.

Key Features

  • Optimised for Signal Biasing: Frequently used to set the operating point of transistors or as part of a voltage divider.

  • Axial Through-Hole Design: Long, flexible leads ensure easy installation on breadboards or permanent PCBs.

  • Quick Identification: Features the standard 4-band colour code (Brown, Red, Orange, Gold) for rapid manual sorting.

  • Low Noise Performance: Carbon film construction minimises electrical noise, making it suitable for sensitive analogue paths.

  • Protective Coating: Finished with a flame-retardant lacquer to provide environmental protection and prevent combustion during overloads.

Technical Details

  • Maximum Working Voltage: Rated for stable operation up to 250V AC/DC in standard circuit environments.

  • Overload Surge Capacity: Can withstand temporary peak voltages up to 500V for short durations.

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

  • Operating Temperature: Maintains accurate resistance values within a range of -55°C to +155°C.

  • Temperature Coefficient: Typically rated at ±450 ppm/°C, ensuring thermal stability during continuous operation.

  • Lead Material: Solder-plated copper-clad steel leads for high conductivity and excellent solder wetting.

  • Resistance Stability: Engineered to stay within ±3% of the nominal value after 1,000 hours of use at maximum load.

  • Miniature Body Size: Compact axial dimensions (approx. 2.3mm x 6.5mm) for high-density component layouts.

  • Environmental Compliance: Fully RoHS compliant and lead-free for modern manufacturing standards.

  • High Frequency Response: Low parasitic inductance makes it suitable for high-speed logic and basic RF filtering.

  • Precision Grade: Class J (±5%) provides a cost-effective balance for most hobbyist and commercial projects.

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

Prototyping and Engineering Tips from Robogears

  • 9V Battery Use: In 9V battery projects, a 12k Ohm resistor is an excellent choice for a pull-up to keep input pins high while drawing only ~0.75mA, effectively saving battery life.

  • 18650 Monitoring: Use two of these resistors in series to create a simple voltage divider for monitoring 18650 cell levels with a 3.3V or 5V microcontroller ADC.

  • IC & Driver Support: Ideal for limiting current to the base of NPN transistors like the BC547 when switching low-power loads like buzzers or small relays.

  • Related Products: We recommend pairing these with our Half-Size Breadboards and 22 AWG Jumper Wires.

Package Includes

  • 5 x 12k Ohm 1/4 Watt Carbon Film Resistors.

Disclaimer Images are for illustration purposes only. Always calculate the power dissipation in your circuit to ensure it stays below 0.25W to avoid component overheating.