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Explore CFR50J-1K0 resistor specs, what to watch for when choosing alternatives, and shop common replacements in South Africa at Communica.
Match resistance, power, and tolerance for safe substitutions.
See which resistor series are widely available at Communica.
Check availability, SA lead times, and branches for collection.
The CFR50J-1K0 is a popular carbon film resistor with a nominal resistance of 1kOhm (1,000 ohms), designed for general-purpose electronics applications, maintenance, educational projects, and industrial equipment. The typical part code interpretation is:
Due to widespread use and specification similarity across global manufacturers, suitable substitutes are often readily available. However, for both professional and student users in South Africa, it's essential to match the key parameters to guarantee circuit integrity and safety.
| Parameter | CFR50J-1K0 Spec | What to Match |
|---|---|---|
| Resistance | 1kOhm | 1kOhm (5%) |
| Power Rating | 0.5W (500mW) | >=0.5W |
| Tolerance | 5% (J) | 5% or tighter |
| Type | Carbon Film, Axial | Carbon Film, Metal Film, or Metal Oxide (see notes) |
| Max Working Voltage | 350V (typical) | >=350V (if circuit demands) |
1kOhm, 0.5W axial resistors like the CFR50J-1K0 are used in signal conditioning, pull-up/down networks, filtering, and analog circuits. They're common in both analog and digital designs, university labs, and quick-repair scenarios across South Africa.
When looking for a direct substitute, check these alternative part series (all commonly stocked at Communica and other SA distributors):
Always check your board's footprint-these resistors are usually 9-12mm long with 0.5-0.6mm diameter leads. For surface mount alternatives, consider 1206 or 0805 SMD packages, ensuring your power rating and layout are compatible.
If using a 1kOhm, 0.5W resistor, the maximum continuous current is calculated by:
Imax = (P/R) = (0.5W / 1000Ω) ~ 22mA
If your circuit runs at 12V, power dissipated is:
P = V2/R = (12V)2/1000Ω = 0.144W
Well within the 0.5W limit, so the substitute is suitable for this scenario.
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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