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Get comprehensive info on the CFR25J-390R resistor: datasheet specs, features, power rating, applications, and South African buying tips from Communica.
Explore datasheet specs, ratings, and performance of the CFR25J-390R resistor.
Learn how to choose and apply the CFR25J-390R in practical electronics builds.
Find out where to source carbon film resistors locally through Communica branches or online.
The CFR25J-390R is a widely used carbon film resistor, especially popular for general electronics, prototyping, and educational builds across South Africa. Part of the CFR25J (Carbon Film Resistor, 1/4 Watt) series, this component is valued for its balance of cost, reliability, and well-documented characteristics. The "390R" marking denotes a resistance of 390 Ohms, ideal for current limiting, pull-downs, and signal conditioning tasks.
Carbon film resistors such as the CFR25J-390R are chosen for their predictable performance in low to moderate power circuits, ease of availability (including branch collection or courier via Communica), and support in both industry and teaching labs.
| Parameter | Value | Notes |
|---|---|---|
| Resistance | 390 Ohm (Ohms) | E12 series, marked 390R |
| Power Rating | 0.25W (1/4 Watt) | Standard for CFR25J series |
| Tolerance | 5% (J) | "J" suffix indicates 5% |
| Maximum Working Voltage | 250 VDC | Check application for safety margin |
| Body Size | Approx. 6.8 mm x 2.4 mm | Axial, standard leaded |
| Operating Temp | -55 degreesC to +155 degreesC | Suitable for most indoor setups |
For projects requiring strict performance metrics, always consult the manufacturer's latest datasheet alongside local availability from suppliers such as Communica.
"CFR25J-390R" can be broken down as follows:
Suppose you use the CFR25J-390R in an LED circuit running from 5V. To calculate current through the resistor (Ohm's Law: I = V / R):
This shows the CFR25J-390R is suitable for conventional LED current limiting in 3V-12V circuits.
Whether you're a student prototyping a basic circuit, an engineer needing reliable resistors for low-voltage signal work, or a procurement officer sourcing for educational labs, the CFR25J-390R carbon film resistor remains a go-to component. Quick lead times, simple tolerance specs, and ready local supply via Communica help keep South African electronics projects on schedule.
Free shipping for orders over ZAR 1,000.00.
Get a full refund if you had the product for less than 7 days.
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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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