Resistor 0.5W 20K ohm (5 pcs)

The Resistor 0.5W 20K ohm is a through-hole fixed resistor with a resistance of 20 kΩ and a power rating of 0.5 W, sold in a pack of 5. It is a handy value for voltage dividers, pull-up and pull-down resistors and op-amp gain networks, and together with a 10 kΩ resistor it makes a simple divider that drops a 5 V signal to about 3.3 V for an ESP32 or Raspberry Pi input.

Resistor 0.5W 20K ohm Specifications

• Resistance: 20 kΩ (20,000 ohms)
• Power rating: 0.5 W (1/2 W)
• Type: fixed resistor, axial leads, through-hole
• Fits: breadboards, perfboards and PCBs
• Pack size: 5 pieces

Resistor 0.5W 20K ohm Applications

• 5 V to 3.3 V level shifting dividers, for example for the HC-SR04 echo pin
• Voltage dividers for reading batteries and sensors on analog inputs
• Setting gain in op-amp amplifier circuits
• Pull-up and pull-down resistors for logic inputs
• Electronics education and prototyping

What's in the Box

• 5 × 20 kΩ 0.5 W resistors

Tip: Resistors have no polarity, so they can be fitted either way round. For a 5 V to 3.3 V divider, connect 10 kΩ from the 5 V signal to the input pin and this 20 kΩ resistor from the input pin to GND; the pin then sees 5 V × 20 / 30 ≈ 3.3 V.

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