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Explore the detailed specs, ratings, and circuit examples for the CFR25J 47Ohm resistor. See where to apply it, find datasheet tables, and buy locally at Communica.
Learn power, tolerance, size, and performance specs of CFR25J 47R resistors.
How 47 ohm resistors are used in LED circuits, test loads, and education locally.
Availabilities, common brands, and buying tips from Communica for your next build.
The CFR25J 47R resistor is a carbon film, fixed-value resistor with a resistance of 47 ohms (Ohm) and a standard quarter-watt (0.25W or 1/4W) power rating. The "CFR25J" part number breaks down as follows:
| Parameter | Value | Notes (SA availability) |
|---|---|---|
| Resistance | 47 Ohm (Ohm) | E24 series; ample local stock |
| Power Rating | 0.25W (1/4 watt) | Suits most signal/LED circuits |
| Tolerance | 5% (J) | Good for general use, not precision |
| Max Working Voltage | 250 V | Always check datasheet for brand/model |
| Body Size | Approx. 6.5 mm x 2.3 mm | Standard through-hole, fits breadboard |
| Temperature Range | -55 to +155 | Suitable for SA ambient conditions |
| Construction | Carbon film with axial leads | RoHS common in current stock |
Carbon film 47Ohm resistors are widely used for:
Band colours for CFR25J 47R:
If you are powering a standard red LED (forward voltage ~2.0V, rated at 20mA typical) from a 5V microcontroller pin, calculate the required resistor:
The 47Ohm value is ideal for higher current LEDs, parallel LEDs, or as a pulldown/snubbers where moderate resistance is required.
To avoid overheating:
If 47Ohm passes 20mA (0.02A):
P = 0.022 x 47 = 0.0188W (< 0.25W rating) - Safe.
Always keep actual dissipation well below the rated 0.25W, especially in sealed enclosures typical to robotics/IoT projects in South Africa.
The CFR25J 47R is a versatile, breadboard-friendly resistor, widely stocked at Communica with supportive options for bulk purchasing, student packs, and VAT invoicing. Explore related resistor values and accessories (multimeters, breadboards, connector wires) for your next project. Always verify exact manufacturer specs via datasheet links provided below for safety and design accuracy.
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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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