75mm dual slide potentiometer fader (B10K shown), side view with the metal slider shaft raised

75mm Dual Slide Potentiometer Fader, B10K Linear or A10K Log

B10K Linear
$4.99 NZD
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75mm dual slide potentiometer fader (B10K shown), side view with the metal slider shaft raised
  • 75mm dual slide potentiometer fader (B10K shown), side view with the metal slider shaft raised
  • Dimensions of the 75mm dual slide fader: 75mm long, 9mm wide, two tapped M2 holes 71mm apart, lever 15mm above the top plate, 60mm travel
  • Top face of the 75mm slide fader showing the slider slot and an M2 mounting hole at each end
  • End view of the 75mm slide fader showing four solder pins, the M2 mounting hole and the slider shaft
  • Opposite end of the 75mm slide fader showing the other two solder pins and M2 mounting hole
  • Underside of the B10K fader showing the B103 marking and the six solder pins
  • Underside of the A10K log fader showing the A103 marking and the six solder pins
75mm Dual Slide Potentiometer Fader, B10K Linear or A10K Log
SKU: POT-SLIDE-B10K-75MM-DUAL

75mm Dual Slide Potentiometer Fader, B10K Linear or A10K Log

$4.99 NZD
Taper
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A 75mm dual-channel slide potentiometer, the straight fader used on mixing desks, lighting desks and DIY controllers. Two separate 10kΩ tracks move together on one metal lever, so one fader can handle a stereo pair or two separate signals. Choose B10K linear for an even response, such as an Arduino or ESP32 input, lighting or control voltages, or A10K log (audio taper) for a volume fader.

Specifications

TaperB10K linear or A10K log (choose above)
Resistance10kΩ per track, 2 tracks on one lever
MarkingB103 (B10K) or A103 (A10K) on the underside
Pins6: four at one end, two at the other, 3 per track
Body size75 x 9mm, 7mm high (10.5mm with pins)
Travel60mm
LeverMetal, 15mm above the top plate, blade 4 x 1.2mm
Mounting2 tapped M2 holes, 71mm apart
UseSignal level; we suggest up to 12V across a track

Datasheets

Technical datasheet, B10K and A10K PDF

What's in the box

1×
75mm dual slide fader in the taper you choose

The bare fader only. No slider cap or wiring is included.

Great for

Stereo volume faders on a DIY audio mixer (A10K)
Reading slider position on an Arduino or ESP32 (B10K)
Channel sliders on a lighting desk or DMX controller (B10K)
Faders for a MIDI controller build (B10K)
Control-voltage sliders on synth and Eurorack panels (B10K)
Replacing a worn 75mm mixer fader, matched to the code on the old one

Wiring & getting started

  1. Find each track's pins

    The six pins are split four at one end and two at the other, and each track has three of them: two ends and a wiper. With a multimeter, the two ends of a track read a steady 10kΩ, and the wiper's reading to each end changes as you move the lever.

  2. Wire it as a divider

    Connect the two track ends across your signal or supply and take the output from the wiper. Swapping the two ends reverses the direction of travel. We suggest no more than 12V across a track and only a few milliamps through the wiper.

  3. Read it on a microcontroller

    Use the B10K. Connect one end to GND, the other to 3.3V on an ESP32 or 5V on an Arduino Uno, and the wiper to an analog input such as A0.

  4. Mount it behind a panel

    Cut a slot in the panel for the lever along its 60mm travel, then screw M2 screws through the panel into the tapped holes at each end, 71mm apart. No nut is needed. Need a rotary knob instead? See our WH148 B10K potentiometer.

Frequently Asked Questions

Answers to the questions buyers ask most.

Should I choose B10K or A10K?
Choose B10K (linear) when you want an even response: halfway along the travel gives about half the resistance. It suits Arduino and ESP32 inputs, lighting, control voltages and MIDI controllers. Choose A10K (log, also called audio taper) for audio volume. Its resistance changes slowly at first and then quickly, which matches how we hear loudness. When replacing a fader, match the code printed on the old one: B103 is B10K and A103 is A10K.
What does dual channel mean?
There are two separate 10kΩ tracks inside the one body, each with its own three pins, and both move with the one lever. One fader can control a left and right stereo pair, or two independent signals.
Which pins are which?
There are six pins, four at one end and two at the other, and each track uses three of them. Find them with a multimeter: the two ends of a track read a steady 10kΩ between them, and the third pin (the wiper) changes as you slide.
Can I use it with an Arduino or ESP32?
Yes, and the B10K is the one to choose. Wire one track as a voltage divider between GND and your board's logic supply (3.3V for an ESP32, 5V for an Arduino Uno) and read the wiper on an analog input. An A10K also works, but the reading will bunch up at one end of the travel.
What voltage can it handle?
It is a signal-level control. We suggest no more than 12V across a track and only a few milliamps through the wiper. It is not for switching a motor, lamp or mains load directly; use it to set a signal for a driver or controller instead.
Does it come with a slider cap?
No, it is the bare fader. The metal lever stands 15mm above the top plate and its blade is 4 x 1.2mm, so choose a push-on fader cap made for that blade size.
How is it mounted?
Each end of the top plate has a tapped M2 hole, on the centreline, 71mm apart centre to centre and 2mm in from each end. Screw M2 screws up through the front panel into these holes; no nut is needed. Cut a slot in the panel for the lever along its 60mm travel. The body is 7mm high, 10.5mm including the pins, and the datasheet has a dimensioned drawing.

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I'm Lukas, an engineering student and maker based in Te Awamutu. NZN grew out of a CNC build that dragged on for months because every missing cable, bolt or electronic part meant another overseas order. I started the shop so Kiwi makers can spend more time building and less time waiting for the next parcel.

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