Resistor 3W 2.7 Ohm

The Resistor 3W 2.7 Ohm is a low-value fixed power resistor with a resistance of 2.7 Ω and a power rating of 3 W. The higher wattage lets it handle the larger currents found in power circuits, where a standard 0.25 W resistor would overheat. It is used for current limiting, setting the current of constant-current sources and as a small load when testing power supplies.

Resistor 3W 2.7 Ohm Specifications

• Resistance: 2.7 Ω (also written 2R7)
• Power rating: 3 W
• Maximum continuous current: about 1.05 A at the full 3 W rating (I = √(P / R))
• Maximum voltage across it at 3 W: about 2.85 V
• Type: fixed power resistor, through-hole
• Quantity: 1 piece

Resistor 3W 2.7 Ohm Applications

• Setting the current of an LM317 constant-current source: 1.25 V / 2.7 Ω ≈ 463 mA
• Current limiting for power LEDs, small lamps and DC motors
• Low-voltage test loads for batteries and power supplies
• Series and inrush current limiting in power circuits
• Replacement part in amplifier and power supply repairs

What's in the Box

• 1 × 2.7 Ω 3 W resistor

Tip: Power resistors get hot when run near their rating, so use them at about half their rated power for long life, leave space around the body and keep them away from plastic parts and wire insulation.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.