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Pricelist: Retail Price (B2C) Pricelist
1 Ohm 0.25W Carbon Film Resistor - 5% Tolerance (Pack of 5)

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

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ComponentSpecification
Resistance Value1 Ohm (1Ω)
Power Rating0.25 Watts (1/4 Watt)
Tolerance±5% (J Type)
ConstructionCarbon Film (CFR)
Package TypeThrough-Hole (Axial)
QuantityPack of 5 Units
Price
₹ 8.47 ₹ 8.47
(Tax included)

Product Description: The 1 Ohm 1/4 Watt Resistor is a highly versatile passive component essential for electronic prototyping and circuit design. With a low resistance of 1Ω and a standard 1/4W power rating, these resistors are frequently utilised for current sensing, protecting low-power LEDs, and creating precise voltage drops. Their carbon film construction ensures stable performance across various temperatures, making them a reliable choice for both student projects and professional engineering.

Key Features

  • Precision Low Resistance: Ideal for high-current paths or as a shunt resistor in sensing circuits.

  • Standard Axial Leads: Easy to insert into breadboards or solder onto universal PCBs and prototyping boards.

  • Visual Identification: Marked with a 4-band colour code (Brown, Black, Golden, Golden) for quick value verification.

  • Flame-Retardant Coating: Built with protective lacquer to ensure safety during potential overload conditions.

  • Highly Cost-Effective: A staple component for any electronics laboratory or hobbyist workbench.

Technical Details

  • Maximum Working Voltage: Designed to operate safely up to 250V in standard applications.

  • Maximum Overload Voltage: Can withstand peak surge voltages up to 500V for short durations.

  • Dielectric Withstanding Voltage: Provides insulation protection up to 500V AC.

  • Operating Temperature Range: Functions reliably in environments from -55°C to +155°C.

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

  • Current Handling: Capable of handling a maximum continuous current of approximately 500mA at rated power.

  • Resistance Drift: Engineered for minimal resistance shift (typically <3%) even after 1,000 hours of continuous load.

  • Construction Material: High-grade carbon film deposited on a ceramic core with tin-plated copper-clad steel leads.

  • Moisture Resistance: Sealed with multiple layers of protective coating to prevent oxidation in humid conditions.

  • Solderability: Leads are treated for excellent wetting, ensuring strong and reliable solder joints.

  • Audio Performance: Low current-noise characteristics make them suitable for basic audio signal conditioning.

  • Dimensions: Standard axial body size (approx. 2.3mm diameter x 6.5mm length) for compact circuit layout.

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

Prototyping and Engineering Tips from Robogears

  • 9V Battery Use: When using a 9V battery, a 1Ω resistor acts almost like a short circuit. Avoid placing it directly across the terminals; instead, use it in series with higher resistance loads for precise current measurements.

  • 18650 Cell Monitoring: Use this resistor as a current shunt in series with an 18650 cell to measure discharge current using an ADC pin on your microcontroller.

  • Capacitor Discharge: Pair with a high-value capacitor and an appropriate power-rated IC to create a fast discharge path, though ensure the peak power doesn't exceed 0.25W.

  • Related Products: Enhance your project with our TP4056 Lithium Battery Charger and MT3608 Boost Converter.

Package Includes

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

Disclaimer

Images are for illustration purposes only.