Resistor 0.25W 18K ohm (10 pcs)

The Resistor 0.25W 18K ohm is a through-hole fixed resistor with a resistance of 18 kΩ and a power rating of 0.25 W (1/4 W), sold in a pack of 10. This E12 value draws about 278 µA at 5 V and is used in voltage dividers, bias networks and op-amp circuits on breadboards, perfboards and PCBs.

Resistor 0.25W 18K ohm Specifications

• Resistance: 18 kΩ (18,000 ohms)
• Power rating: 0.25 W (1/4 W)
• Value series: standard E12 value (also in the E24 series)
• Type: fixed resistor, axial leads, through-hole
• Fits: breadboards, perfboards and PCBs
• Pack size: 10 pieces

Resistor 0.25W 18K ohm Applications

• Voltage dividers for sensors and supply monitoring
• Transistor bias networks
• Pull-up and pull-down resistors for inputs
• Inverting op-amp amplifiers with a gain of −1.8 (10 kΩ input resistor)
• RC timing circuits: 18 kΩ × 10 µF = 0.18 s
• Electronics education and prototyping

What's in the Box

• 10 × 18 kΩ 0.25 W resistors

Tip: Resistors have no polarity, so they can be fitted either way round. The 0.25 W limit would only be reached at about 67 V across this resistor (P = V² / R), so it is very safe for 3.3 V, 5 V and 12 V circuits.

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