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Explore the specs, datasheet, uses, and sourcing tips for the MFR25F 1K1 1% metal film resistor in South African hobby, education, and industry contexts.
Understand power, tolerance, and temperature limits for the MFR25F 1K1 resistor.
Learn how MFR25F 1K1 fits into real-world circuits in South Africa.
Tips for finding local stock and SA-specific procurement at Communica.
The MFR25F 1K1 resistor is a 1,100 ohm (1.1kΩ) metal film axial resistor, most commonly used for precise, stable resistive loads in low-power electronic circuits. The 'MFR' prefix refers to 'Metal Film Resistor'; '25F' indicates a standard 0.25 watt (1/4W) power rating; '1K1' signifies a 1,100Ω resistance, and 'F' refers to 1% tolerance. This resistor type is widely used in prototyping, student labs, analogue/digital designs, and production-grade circuit boards in South Africa due to its affordability, reliability, and predictable characteristics.
| Parameter | Value | Details/Notes |
|---|---|---|
| Resistance | 1.1kΩ (1K1) | E24/E96 series; banded brown-brown-black-brown-brown |
| Tolerance | ±1% | 'F' tolerance band, stable over time |
| Rated Power | 0.25W (250mW) | Maximum without overheating at 70°C ambient |
| Temperature Coefficient | ±100ppm/°C typical | Metal film resistors are low drift vs. carbon types |
| Max Working Voltage | 250V | Refer to specific datasheets for variant; most projects well below this |
| Lead Material | Tinned copper | Compatible with solder breadboards and PCBs |
Compared to carbon film or thick film alternatives, metal film resistors like the MFR25F 1K1 offer:
This makes them a preferred choice for South African engineering faculties, design labs, and students needing accurate, repeatable resistor values for experiments and assignments.
1.1kΩ is a popular value for current limiting (e.g., series LEDs), simple voltage dividers, pull-ups, or biasing in op-amp and transistor circuits. The close tolerance and stability of this component are especially useful in analogue and digital designs that require repeatability across multiple production runs.
When choosing an MFR25F 1K1 resistor for your circuit, consider:
The MFR25F 1K1 type (or equivalents from UniOhm, Royal Ohm, Yageo, and others) is widely stocked at local distributors like Communica. Bulk and tape-pack options are common for tertiary labs and procurement. Expect immediate pickup for popular values at Samrand, Pretoria, or Cape Town branches, subject to day-to-day inventory. For bulk education/industry needs, Communica can provide VAT invoicing and quotations.
| Feature | MFR25F Series | Standard Carbon Film |
|---|---|---|
| Tolerance | 1% | 5% |
| Noise | Low | Higher |
| Drift (Temp) | Minimal | Moderate |
| Power Rating | 0.25W | 0.25W |
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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He's polite, good with people and made me feel free to talk.. all in all he's helpful
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