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Comprehensive technical guide to the CFR100J-470K carbon film resistor: datasheet, ratings, tolerance, dimensions, and local application tips for hobby and industry buyers at Communica.
Get crucial values: 470kOhm, 1W, 5% tolerance, and working voltage details.
Used in filtering, biasing, voltage dividers-see examples and advice for local builds.
Find CFR and equivalent resistors in stock at Communica, with VAT invoicing and branch pickup.
The CFR100J-470K is a widely used carbon film resistor, specified at 470,000 ohms (470kOhm) resistance, with a 1W power rating and 5% tolerance. As a standard through-hole, axial component, it is a staple choice in signal processing, amplifier circuits, filter networks, and general-purpose electronics often encountered across education, industry, and maker projects in South Africa.
| Parameter | Value |
|---|---|
| Resistance Value | 470kOhm (470,000Ohm) |
| Rated Power | 1 Watt (1W) |
| Tolerance | 5% (J) |
| Maximum Working Voltage | 350V |
| Maximum Overload Voltage | 700V |
| Temperature Coefficient | 300 ppm/ degreesC |
| Body Size (approx.) | 9 mm (L) x 3.2 mm (D) |
| Lead Diameter | 0.6 mm |
| Operating Temp. | -55 degreesC to +155 degreesC |
This resistor follows standard 4-band color coding for identification: yellow (4), violet (7), black (0), and gold (5%). On the physical part, you'll see these bands for quick confirmation.
When selecting this resistor for your project, always ensure the component's power dissipation and maximum voltage fall within its rated values. The rated power (1W) refers to the max continuous dissipation at 25 degreesC in still air-de-rate for hotter environments, as is common in South African summer labs and workshops.
| Typical Example | Calculation | Result |
|---|---|---|
| If used as a voltage divider on 230V AC | V^2/R = (230x230)/470,000 | ~0.113 W (well below 1W limit) |
| If passing 1 mA current | P = I^2 x R = (0.001)^2 x 470,000 | =0.47 W |
While the CFR100J-470K is a standard carbon film offering, metal film resistors with the same spec may also be found in South African distributors like Communica. Metal film types offer better noise performance and tighter tolerance if required for sensitive applications.
| Feature | CFR100J-470K | When to Use |
|---|---|---|
| Power Dissipation | Up to 1W | Filter/bias usage, not high-wattage loads |
| Tolerance | 5% | Most education and industrial tasks |
| Max Voltage | 350V (working) | Dividers, input stages, RC filtering |
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Awesome service from Sydney and Nicole...keep up the great job guys
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He's polite, good with people and made me feel free to talk.. all in all he's helpful
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Sydney and Nicole were absolutely fantastic and helped me with my purchases. Thank you.
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azul and Nicole were very helpful and very efficient
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They have mostly any electronic tool and components that you may require - Thanks to Nicole for helping me.
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One of the cashier services rendered to me was here at communica by the lady named Nicole and her manager dolly they were both willing to go above and...
The service was excellent, Nicole and Rehaan were very helpful and professional in their work.
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Mohamed Sharief is a great asset to Communica. He provides a 5 star service and good product knowledge. Keep up the good work.
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Quick quality customer service.
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Currently have only purchased items from their on-line store. Received what I ordered plus quick delivery. No complaints to date.
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I got the most pleasant service from Sydney and Windie
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