3386P Trimpot Trimmer Potentiometer – 10K

3386P Trimpot Trimmer Potentiometer – 10K is a single-turn, cermet trimming potentiometer engineered for precise, high-resolution voltage division and resistance tuning in electronic circuits. This popular square-shaped component is specifically designed for through-hole PCB mounting where engineers need reliable calibration and adjustments that rarely change after initial setup. With a nominal resistance of 10 kΩ, the 3386P model allows you to easily set reference voltages, adjust amplifier gain, or fine-tune timing circuits, offering exceptional stability and power handling capacity for its compact size.

Key Features:

• Single-Turn Adjustment: Provides quick and straightforward resistance setting with one full turn of the adjustment screw.
• Cermet Element: Utilizes a cermet (ceramic-metal) resistance element, offering superior stability, high reliability, and excellent temperature characteristics.
• Top Adjust Style: The adjustment screw is located on the top surface, simplifying access when the trimpot is installed vertically on a PCB.
• High Power Rating: Capable of dissipating 0.5 W (1/2 Watt) at 70°C, handling significant current for a trimming component.
• Standard PCB Footprint: Features a widely adopted pin configuration and compact size, ensuring broad compatibility with many existing circuit designs.

Technical Specifications:

• Nominal Resistance (R): 10 kΩ
• Resistance Tolerance: ±10%
• Power Rating: 0.5 W (at 70°C)
• Temperature Coefficient of Resistance (TCR): ±100 ppm/°C (Ensures stable resistance across temperature changes)
• End Resistance: ≤ 2 Ω
• Operating Voltage (Max): 300 V DC or 200 V AC (RMS)
• Effective Electrical Travel: 250° nominal

Mechanical Specifications:

• Mounting Type: Through-Hole (THT)
• Adjustment Type: Top Adjust
• Turns: Single-Turn
• Rotational Life: 200 cycles minimum
• Sealing: Dustproof construction (typically unsealed)

Dimensions:

• Body Size (Square): ≈ 9.5 mm x 9.5 mm
• Height (Excluding Screw): ≈ 5.0 mm
• Pin Pitch: ≈ 2.54 mm (Standard 0.1 inch spacing)
• Weight: ≈ 1.0 g

Pinout and Wiring:

• Pin 1 (Terminal 1): Connect this pin to one end of the voltage/signal source (often ground or a reference voltage).
• Pin 2 (Wiper): This pin provides the variable output voltage or resistance. Connect it to the input of the circuit you wish to adjust.
• Pin 3 (Terminal 2): Connect this pin to the opposite end of the voltage/signal source (often V_CC or the positive rail).
• Wiring Note: To use the 3386P as a variable resistor (rheostat), wire Pin 2 (Wiper) to either Pin 1 or Pin 3, and use the remaining connected pin as the other terminal.

Datasheet Reference:

• Download Bourns Model 3386 Datasheet

Commonly Used in:

• Audio Equipment: Setting DC offset or bias points in amplifier circuits.
• Power Supplies: Calibrating voltage and current limits in adjustable power supply circuits.
• Test and Measurement Gear: Fine-tuning sensor scaling, zero-point, and calibration points.

Applications:

• Voltage Dividers: Creating a variable reference voltage for op-amps, comparators, and ADCs (Analog-to-Digital Converters).
• Gain Control: Adjusting the amplification factor of non-inverting and inverting amplifier configurations.
• Timing Circuits: Tuning the frequency or pulse width of oscillators, monostable multivibrators, and waveform generators.

Equivalent Models:

• Piher PT10: A similar single-turn, square-cermet trimmer often used interchangeably in many applications.
• Vishay 3386 Series: Many manufacturers produce direct clones or functional equivalents under the same model numbering scheme due to the part’s popularity.

Package Includes:

• 1 x 3386P Trimpot Trimmer Potentiometer – 10 kΩ