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Understand how CFR200J 8R2 resistors are used in power, audio, and prototyping circuits. Compare specs, selection factors, and local sourcing with Communica.
Discover how the CFR200J 8R2 fits audio, power, and filter circuits.
Learn key electrical ratings and how to match them to your project.
Find availability, local brands, and lead-time advice for CFR200J 8R2 at Communica.
Resistors form the backbone of nearly every electronics project-providing precise control over voltage, current, and signal conditioning. The CFR200J 8R2 is a common carbon film resistor rated at 8.2 ohms (Ohm) and 2-watt power handling. In South Africa, students, engineers, and technicians rely on this value for both prototyping and long-term installations due to its balance of cost, availability, and ruggedness.
Typical applications where an 8.2Ohm, 2W resistor such as the CFR200J 8R2 excels include:
Before integrating the CFR200J 8R2 into your project, understanding its core specifications is crucial. The datasheet typically lists the following:
| Property | CFR200J 8R2 Spec | Project Relevance |
|---|---|---|
| Rated Resistance | 8.2Ohm 5% (J tolerance) | General current limiting, moderate precision |
| Power Rating | 2W | Handles higher currents or sustained loads |
| Temperature Coefficient | ~350 ppm/ degreesC | Small drift in harsh (industrial) environments |
| Body Size (approx) | Axial, ~4mm x 16mm | Fits standard breadboards and PCBs |
As a "2W" resistor, this part is suitable for applications where resistors may need to dissipate more heat than typical 0.25-0.5W types-making it popular for power circuits found throughout industry and tertiary labs.
Choosing the right resistor means factoring in circuit demand, fitment, and local supply realities. Key points to consider for the CFR200J 8R2 include:
Typical student and maintenance builds in South Africa prize immediate availability and robustness, making CFR200J 8R2 a reliable "first grab" in labs and workshops. Compare options in Resistors and filter for power and value to check stock.
To safely run a 12V LED rated for 10V and 0.2A, a series resistor prevents overcurrent. Calculate what the CFR200J 8R2 can handle:
A 2W CFR200J 8R2 is more than sufficient, with enough margin for safety and temperature rise.
Used for emitter degeneration on small-signal transistors to stabilize gain, the 8.2Ohm type offers a balance between stability and minimal signal loss. With Ve = 0.18V and target current Ie = 22mA, calculation:
The 2W rating is substantial overkill, ensuring long-term reliability even if bias current drifts slightly.
Free shipping for orders over ZAR 1,000.00.
Get a full refund if you had the product for less than 7 days.
Nationwide delivery within 2 - 4 working days.
Communica supplies semiconductors and electronic components to industries such as automotive, electrical, automation, mining, and education.
Disclaimer: This content is for educational purposes only. Product availability, pricing, and specifications are subject to change. Always verify current details on the retailer's website before making a purchase. We may earn affiliate commissions from qualifying purchases.
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