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Learn how to diagnose and fix issues with MOF 2W 5K6 5% resistors in circuit designs. Includes fault detection, real-world SA scenarios, and replacement tips.
Spot overheating, drift, or open faults with MOF 2W 5K6 5% resistors quickly.
Follow proven test methods for accurate troubleshooting in labs and projects.
Tips for finding replacements and compatible resistors at Communica branches.
Metal oxide film (MOF) resistors rated at 2 watts and 5.6kOhm (5K6) 5% tolerance are widely used as current limiters, sense elements, and bleeder resistors in power supplies, amplifiers, and industrial control circuits. Their flame-retardant construction and elevated power handling make them suitable for harsh environments. However, issues like incorrect power dissipation, tolerance drift, or physical damage can affect circuit reliability.
| Property | Specification |
|---|---|
| Resistance Value | 5.6kOhm (5600 ohms) |
| Tolerance | 5% |
| Power Rating | 2W |
| Temperature Coefficient | Typically 300ppm/ degreesC |
| Body Type | Axial, flameproof coating |
In the South African context, MOF resistors from reputable brands such as Royal Ohm, Yageo, and Vishay are commonly available through distributors like Communica. Both hobbyist and industrial clients value the blend of high reliability and cost-effectiveness.
Damage may present as erratic readings, failure to limit current, or unexpected circuit behaviour. Spotting early faults is essential for engineering students building laboratory projects and technicians maintaining field installations.
If the measured value falls outside the range, replace the resistor. Document any tendencies for repeated failure which may indicate systemic design issues, such as operating too close to power or voltage limits.
Hands-on troubleshooting depends on understanding typical stress conditions in South African labs, classrooms, and industrial settings. Here are practical examples:
To ensure long-term reliability, verify your power dissipation using:
For example, with 106V across a 5.6kOhm resistor:
When a MOF 2W 5K6 5% resistor needs replacing, check:
| Symptom | Likely Cause | Solution |
|---|---|---|
| Overheating | Exceeding rated power/poor ventilation | Use higher-wattage resistor; improve airflow |
| Value drift | Thermal stress, repeated overload | Replace, check power calculation |
| Open circuit | Physical fracture, surge or ESD | Replace, inspect circuit for surges |
| Noise issues | Poor soldering, cracked body | Resolder, use new quality part |
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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