Resistor 0.5W 390K ohm (5 pcs)

The Resistor 0.5W 390K ohm is a through-hole fixed resistor with a resistance of 390 kΩ and a power rating of 0.5 W, sold in a pack of 5. 390 kΩ is a standard E12 value used in bias networks, timing circuits, op-amp gain stages and low-current voltage dividers in analog and microcontroller projects.

Resistor 0.5W 390K ohm Specifications

• Resistance: 390 kΩ (390,000 ohms)
• Power rating: 0.5 W (1/2 W)
• Colour code: orange, white, yellow (4-band) or orange, white, black, orange (5-band), plus a tolerance band
• Type: fixed resistor, axial leads, through-hole
• Fits: breadboards, perfboards and PCBs
• Pack size: 5 pieces

Resistor 0.5W 390K ohm Applications

• Bias resistors for transistor and op-amp amplifier stages
• RC timing: 390 kΩ with 1 µF gives a time constant of about 0.39 seconds
• Low-current voltage dividers for battery monitoring
• Feedback resistors that set op-amp gain
• Electronics education and prototyping

What's in the Box

• 5 × 390 kΩ 0.5 W resistors

Tip: Resistors have no polarity. At 5 V a 390 kΩ resistor passes only about 13 µA, so the 0.5 W rating leaves a huge margin; that low current also means a divider made with it is easily loaded, so buffer its output with an op-amp if the next stage draws current.

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