Adjustment rotor (screwdriver slot)Body · 103 = 10 kΩPins 1-2-3 (middle = wiper)

Blue rectangular body, brass adjustment screw on top, “103” code, three legs in a row
3296W: ≈ 9.5 × 10 × 4.8 mm, pin pitch 2.54 mm · Example shown: 3362P, single-turn trimpot (103 = 10 kΩ)

Resistors

Trimpot

In simple terms

What is this?

A tiny adjustment screw on the board; a small tap you set once and forget.

What is it for?

Lets you fine-tune something once during setup and leave it fixed, like contrast or a threshold.

Where do you see it?

Small adjustment screws on old measuring instruments, monitors and radio boards.

How do you spot it?

A small box with a screw that has a screwdriver slot on top; three legs underneath.

Caution:

Turn it slowly with a small screwdriver; if you force it at the end, the screw breaks.

Technical definition

A small potentiometer adjusted with a screwdriver. It is soldered onto the board for settings that rarely change, such as calibration or screen contrast. Multi-turn types allow very fine adjustment.

Value10 kΩ (103)

Power0.5 W

Tolerance±10%

Schematic symbol IEC and ANSI differ

IEC 60617: the drawing style used in Türkiye and Europe.

Pins 3

1Terminal 1Outer leg, one end of the resistive track1

2Wiper (middle)Slides along the track with the adjustment screwW

3Terminal 3Outer leg, the other end of the track3

Features typical

Value code: 103 = 10 kΩ · 502 = 5 kΩ
Tolerance: ±10%
Power: 0.5 W (70 °C)
Number of turns: 3296: 25 turns · 3362: single turn
Track: Cermet
Example part: 3296W (25 turns) · 3362P (single turn)

Common mistakes

Using it for frequent adjustmentA trimpot is designed for few adjustments. For a setting that will be turned often, use a panel potentiometer.

Forcing the screw at its endOn multi-turn types the screw slips and clicks when it reaches the end. No need to force it; turn the other way.

Test with a multimeter

Test whether this part is good with the multimeter on the measurement screen.

Take a measurement

Where it is used

LCD contrast adjustmentSensor threshold adjustmentOutput voltage of an adjustable regulatorFine-tuning op-amp gain