100 Ohm Trimmer Potentiometer, 3386 Package, Through-Hole

A trimmer potentiometer (trimpot) is designed for a genuinely different purpose than a regular front-panel potentiometer - it's meant to be set once during calibration or initial setup using a small screwdriver, then left alone during normal operation, rather than being adjusted repeatedly by an end user. This 100 ohm trimpot in the common 3386 package size fills that exact calibration role on a custom circuit board.

Single-turn operation means the full resistance range is covered across one rotation of the adjustment screw, giving quick, straightforward adjustment without needing many turns to sweep the full range - appropriate for a calibration setting that's typically dialed in once and not fine-tuned constantly. Tolerance is rated at 10%, standard for this trimpot class, and the component is rated across a wide -55 to 125C operating temperature range.

Through-hole mounting keeps the trimpot straightforward to hand-solder directly onto a perfboard or custom PCB design, and its genuinely tiny 9.5 x 9.5 x 5mm footprint means it adds minimal bulk to a board layout even when several calibration points are needed across one design.

Builders setting a fixed reference voltage, calibrating a sensor circuit's threshold, or needing any board-mounted, screwdriver-adjustable resistance setting that doesn't need front-panel user access will find this 100 ohm trimpot a well-proven, standard component for that calibration task.