Resistor 0.5W 9.1 ohm (5 pcs)

The Resistor 0.5W 9.1 ohm is a low-value through-hole fixed resistor with a resistance of 9.1 Ω and a power rating of 0.5 W, sold in a pack of 5. Resistors under 10 Ω are used to sense and set current in power circuits, so this one suits LED drivers, current measurement and series resistors in low-voltage projects.

Resistor 0.5W 9.1 ohm Specifications

• Resistance: 9.1 Ω
• Power rating: 0.5 W (1/2 W)
• Type: fixed resistor, axial leads, through-hole
• Maximum current: about 234 mA at the 0.5 W rating
• Fits: breadboards, perfboards and PCBs
• Pack size: 5 pieces

Resistor 0.5W 9.1 ohm Applications

• Setting an LM317 constant-current source to about 137 mA (1.25 V / 9.1 Ω)
• Current sensing: 100 mA through it gives 0.91 V, easy to read with an analog input
• Current limiting for high-current LEDs and small loads
• Small test loads for low-voltage supplies
• Electronics education and prototyping

What's in the Box

• 5 × 9.1 Ω 0.5 W resistors

Tip: Resistors have no polarity, so they can be fitted either way round. With 9.1 Ω the 0.5 W limit is reached at about 2.1 V across the resistor, so check the power (P = I² × R) and allow the resistor to run warm only within its rating.

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