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A comprehensive guide to selecting CFR200J 8R2 resistors: specs, application tips, calculations, and South African sourcing from Communica.
Know what CFR200J 8R2 means and where it fits best.
Pick the right value using examples and real-world tips.
Find stock and alternatives at Communica branches.
CFR200J 8R2 is a resistor specification you'll often spot on South African bills of materials, especially in power supplies, test rigs, and industrial control panels. Understanding its designation and typical uses helps ensure reliable, safe builds-whether you're a student, maker, or engineer.
| Property | Typical Value | Meaning |
|---|---|---|
| Resistance (Ohm) | 8.2 Ohm | Nominal resistance value |
| Power Rating | 2 W | Max continuous power at 25 degreesC |
| Tolerance | 5% (J) | Max permitted value deviation |
| Temperature Range | -55 degreesC to +155 degreesC | Usual carbon film operation |
| Body Size | ~3.5x15 mm | Varies by brand |
You'll find CFR200J 8R2 resistors stocked at Communica, including in-store at Samrand, Pretoria, and Cape Town. Always check for leaded axial format, which is prevalent in breadboarding, repairs, and through-hole assembly favored by local tech colleges.
CFR200J 8R2 resistors follow widely recognized coding conventions and are interchangeable across leading brands. If exact types are out of stock, look for equivalents-like MF (metal film) with the same resistance and power rating-or parallel/series combinations for flexible prototyping.
For most circuits, you'll size your resistor using Ohm's Law (V = IR) and verify it won't exceed its power handling (P = I2 x R or P = V2 / R). Let's use an example relevant to local labs:
| Parameter | Example Value |
|---|---|
| Voltage Across Resistor (V) | 12V |
| Resistance (Ohm) | 8.2 |
| Power Dissipated (P) | P = V2/R = 144/8.2 ~ 17.6W |
// Basic LED with current-limiting resistor +12V ---[CFR200J 8R2]---|>|--- 0V
For more complex arrangements, use two 8R2 resistors in parallel to create a 4.1Ohm load at 4W, or series for higher voltages. Always ensure your connections match the mechanical format expected by your PCB or wiring loom-standard 0.6mm leads are popular in South African breadboards.
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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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