Resistor 0.25W 3.9M ohm (10 pcs)

The Resistor 0.25W 3.9M ohm is a through-hole fixed resistor with a resistance of 3.9 MΩ and a power rating of 0.25 W, sold in a pack of 10. At this multi-megohm value only microamps flow, so it is used where a circuit must draw almost no current, such as high-impedance dividers, bleeder resistors and high-gain op-amp feedback.

Resistor 0.25W 3.9M ohm Specifications

• Resistance: 3.9 MΩ (3,900,000 ohms)
• Power rating: 0.25 W (1/4 W)
• Type: fixed resistor, axial leads, through-hole
• Standard value: E24 series
• Current at 5 V: about 1.28 µA (I = V / R)
• Fits: breadboards, perfboards and PCBs
• Pack size: 10 pieces

Resistor 0.25W 3.9M ohm Applications

• Very low-drain voltage dividers for battery and supply monitoring
• Bleeder resistors that discharge filter capacitors after power-off
• High-gain feedback resistors in op-amp and sensor amplifier circuits
• Weak pull-down or bias resistors on high-impedance CMOS inputs
• Electronics education and prototyping

What's in the Box

• 10 × 3.9 MΩ 0.25 W resistors

Tip: When checking it with a multimeter, do not hold both leads with your fingers, because your body resistance in parallel makes the reading lower than 3.9 MΩ. Clean off flux after soldering, since residue and moisture can form leakage paths that lower the effective resistance at megohm values.

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