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Get all essential specifications, datasheet values, and selection tips for the 270Ohm CFR12J-270R carbon film resistor. Find out where to buy it in South Africa and how to apply it in circuits.
See resistance, tolerance, and power details relevant to every build.
How to choose, calculate, and install 270Ohm carbon film resistors in SA projects.
Learn where to source reliable CFR12J-270R resistors with Communica.
The CFR12J-270R is a widely used 270 ohm (Ohm) carbon film resistor, designed for through-hole mounting in a variety of commercial, educational, and hobbyist electronic circuits. The 'CFR' prefix stands for Carbon Film Resistor, the '12' denotes a 1/2W (0.5W) power rating, the 'J' represents 5% tolerance, and '270R' refers to its 270Ohm resistance value. These resistors remain popular in South African laboratories, maker workbenches, and manufacturing lines due to their cost-effectiveness and versatility.
Carbon film resistors like the CFR12J-270R are valued for their predictable electrical behavior and easy identification with colour codes (red, violet, brown, gold bands for 270Ohm 5%). Given South Africa's mix of imported and locally distributed stock, ensuring authentic specification is crucial for repeatable engineering outcomes.
| Parameter | Value | Notes |
|---|---|---|
| Resistance | 270Ohm | Colour code: Red-Violet-Brown-Gold |
| Tolerance | 5% (J) | Actual range: 256.5Ohm - 283.5Ohm |
| Power Rating | 0.5W (1/2W) | Max continuous dissipation at +70 degreesC |
| Max Voltage | 250V | Check both working and overload ratings |
| Temperature Coeff. | 300ppm/ degreesC (typical) | Varies by batch/manufacturer |
| Body Length | ~9.0mm | Standard for 1/2W carbon film |
| Lead Spacing | ~8.0mm | Fits standard breadboards/PCBs |
Suppose you need to light a red LED (forward voltage 2.0V, recommended current 15mA) from a 5V supply:
When selecting a CFR12J-270R resistor in South Africa, consider:
You'll find CFR12J-270R and similar carbon film resistors in Communica's Resistors category. The range includes value packs, precision types, and bulk sleeve options. Brands commonly found in SA channels include UniOhm and RS Pro along with trusted OEM batches. Lead times are typically 1-3 business days for ex-stock, with branch collection at Samrand, Pretoria CBD, or Cape Town branches possible for urgent projects.
The CFR12J-270R carbon film resistor offers a balanced mix of availability, robustness, and well-documented specification, serving as a staple for circuit protection, signal conditioning, and education in South African electronics environments. Always consider datasheet values, installation conditions, and reputable local suppliers to ensure consistent performance for your projects.
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