Resistor 0.5W 1 ohm (5 pcs)

The Resistor 0.5W 1 ohm is a low-value through-hole fixed resistor with a resistance of 1 Ω and a power rating of 0.5 W, sold in a pack of 5. Its main use is current sensing: the voltage across a 1 Ω resistor equals the current through it, 1 mV for every 1 mA, so you can measure current with a multimeter or a microcontroller's analog input.

Resistor 0.5W 1 ohm Specifications

• Resistance: 1 Ω
• Power rating: 0.5 W (1/2 W)
• Maximum current at 0.5 W: about 0.7 A (I = √(P / R))
• Type: fixed resistor, axial leads, through-hole
• Fits: breadboards, perfboards and PCBs
• Pack size: 5 pieces

Resistor 0.5W 1 ohm Applications

• Current sense (shunt) resistor for measuring load current
• Measuring LED and motor current in test circuits
• Current limiting in low-voltage power circuits
• Sense resistor for simple constant-current LED drivers
• Ohm's law experiments in electronics labs

What's in the Box

• 5 × 1 Ω 0.5 W resistors

Tip: Resistors have no polarity. Watch the power: P = I² × R, so at 0.5 A a 1 Ω resistor already dissipates 0.25 W and at about 0.7 A it reaches its 0.5 W limit; keep the current lower for cool, accurate readings.

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