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Need a replacement for the MFR25F-2R7 resistor? Discover equivalent values, brands, important specs, and local availability at Communica. Key selection tips included.
How to identify critical parameters for safe MFR25F-2R7 substitution.
Explore local metal film 2.7Ohm resistor options from trusted manufacturers at Communica.
Guidance on finding, verifying, and collecting resistor substitutes in South Africa.
The MFR25F-2R7 describes a specific fixed-value metal film resistor: 2.7 ohms, rated for 0.25 watt (1/4W) continuous dissipation, with a 1% tolerance (F). This part is widely used in signal conditioning, current sensing, LED circuits, and protection circuits. When you need a substitute - due to limited stock, end-of-life, or panel changes - understanding the critical specifications is essential for a safe and functional swap.
| Parameter | MFR25F-2R7 | What to Match |
|---|---|---|
| Resistance (Ohm) | 2.7 | 2.7 (or as close as circuit allows) |
| Power Rating (W) | 0.25 | >= 0.25 (never use lower) |
| Tolerance (%) | 1 (F) | 1 preferred, 2 or 5 if circuit permits |
| Type | Metal Film | Metal Film usually, Carbon Film possible if specs fit |
| Physical Size | Standard Axial 1/4W | Ensure board fit in mm |
Communica stocks a wide range of 2.7Ohm 1/4W metal film resistors from globally renowned and maker-friendly brands. Here are common equivalents to explore under the Resistors category:
Always confirm the suffix meaning on datasheets. For example, 'F' means 1% tolerance and 'J' for 5%.
Check the Shop by Brand page for updated listings and datasheet links.
Not all 2.7Ohm resistors are equal. To choose a safe and reliable substitute, use these criteria:
Suppose you are building an LED driver with a 2.7Ohm, 0.25W resistor, and your maximum expected continuous voltage drop is 2V. To check if you can use a 1/4W resistor:
| Power (P) | = V2 / R or I2 x R |
|---|---|
| P | = (2)^2 / 2.7 ~ 1.48W - Too High! |
For 2V, you'd need a higher power rating (>=2W). Most signal and protection circuits only see millivolts to a few hundred millivolts: for example, a 0.5V drop yields 0.093W, making a 1/4W resistor suitable.
If you can't find a 2.7Ohm, 0.25W, 1% resistor locally, try these steps:
Remember, South African component demand can impact lead times. For popular education and repair projects, consider purchasing spare packs for future use.
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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