Resistor 0.5W 4.3 ohm (5 pcs)

The Resistor 0.5W 4.3 ohm is a low-value through-hole resistor with a resistance of 4.3 Ω and a power rating of 0.5 W, supplied in a pack of 5. A few ohms is the range used for measuring and limiting current rather than for setting signal levels, so this value is useful for current-sense shunts, series resistors in low-voltage power lines and replacing worn parts on repair jobs.

Resistor 0.5W 4.3 ohm Specifications

• Resistance: 4.3 Ω
• Power rating: 0.5 W (1/2 W)
• Current at full power: about 0.34 A (I = √(P / R))
• Type: fixed resistor, axial leads, through-hole
• Fits: breadboards, perfboards and PCBs
• Pack size: 5 pieces

Resistor 0.5W 4.3 ohm Applications

• Current-sense shunt read by an op-amp or a microcontroller ADC
• Series resistors that limit current in low-voltage circuits
• Small dummy loads for testing cells and low-voltage supplies
• Repairing power boards, chargers and audio equipment
• Electronics labs and prototyping

What's in the Box

• 5 × 4.3 Ω 0.5 W resistors

Tip: A 4.3 Ω resistor reaches its 0.5 W limit at only about 1.5 V across it, or about 0.34 A through it. Work out P = I² × R for your circuit first, and if it comes close to 0.5 W, use a higher-wattage resistor so it does not overheat.

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