Potentiometer Carbon 2.5M ohm

The Potentiometer Carbon 2.5M ohm is a carbon-track potentiometer with a resistance of 2.5 MΩ. Adjusting the control slides a wiper along the carbon track, so you can vary the resistance or pick off any voltage between the two ends. It is a low-cost part for high-impedance circuits, RC timing and voltage dividers that need to draw only a couple of microamps.

Potentiometer Carbon 2.5M ohm Specifications

• Type: carbon-track potentiometer (variable resistor)
• Resistance: 2.5 MΩ (2,500,000 ohms) end to end
• Connections: two track ends and a wiper
• Use: voltage divider or variable resistor (rheostat)
• Track current at 5 V: about 2 µA

Potentiometer Carbon 2.5M ohm Applications

• Adjustment in high-impedance amplifier and sensor circuits
• Long RC time delays in timer circuits such as the NE555
• Low-current voltage dividers in battery-powered devices
• Replacing a worn potentiometer of the same value in repairs
• Electronics labs and experiments

What's in the Box

• 1 × carbon potentiometer, 2.5 MΩ

Tip: Use all three pins as a voltage divider, or the wiper (usually the middle pin) and one end as a variable resistor. A megaohm track has a high output impedance, so buffer the wiper with an op-amp before feeding an ADC such as an Arduino analog input.

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