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Bourns 3299X1253LF 3/8 Square Trimmer Potentiometer

The Bourns 3299X-1-253LF is a precision trimmer potentiometer designed for a wide range of industrial applications requiring fine adjustments. Its 3/8" square design, multiturn capability, and cermet resistive element provide excellent stability and resolution. The sealed construction ensures reliable performance in harsh environments. Available with RoHS compliant options, this potentiometer is ideal for trimming circuits in audio equipment, instrumentation, and other sensitive applications. It offers adjustable voltage and resistance, allowing for precise control of circuit parameters.

Authorized Distributors
Source:DigiKey
Part No:3299X-1-253LF
Stock:30
Inv Date:05-28-2026
Price: Unit price: $2.87
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Part No:3299X-1-253LF
Stock:215
Inv Date:05-29-2026
Price: Unit price: $2.75
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Part No:3299X-1-253LF
Stock:0
Inv Date:05-28-2026
Price: Unit price: $2.87
Buy/RFQ:
Part No:3299X-1-253LF
Stock:4
Inv Date:05-28-2026
Price: Unit price: $1.859
Buy/RFQ:
Part No:3299X-1-253LF
Stock:4
Inv Date:05-28-2026
Price: Unit price: $1.859
Buy/RFQ:

Bourns 3299X1253LF 3/8 Square Trimmer Potentiometer Specifications:

  • Standard Resistance Range: 10 to 2 megohms
  • Resistance Tolerance: ±10 % std.
  • Absolute Minimum Resistance: 1 % or 2 ohms max.
  • Contact Resistance Variation: 1.0 % or 3 ohms max.
  • Adjustability Voltage: ±0.01 %
  • Adjustability Resistance: ±0.05 %
  • Resolution: Infinite
  • Insulation Resistance: 500 vdc. 1,000 megohms min.
  • Dielectric Strength Sea Level: 900 vac
  • Dielectric Strength 70,000 Feet: 350 vac
  • Effective Travel: 25 turns nom.
  • Power Rating (300 volts max.) 70 °C: 0.5 watt
  • Power Rating (300 volts max.) 125 °C: 0 watt
  • Temperature Range: -55 °C to +125 °C
  • Temperature Coefficient: ±100 ppm/°C
  • Seal Test: 85 °C Fluorinert Humidity
  • Vibration: 20 G (1 % ΔTR; 1 % ΔVR)
  • Shock: 100 G (1 % ΔTR; 1 % ΔVR)
  • Load Life: 1,000 hours 0.5 watt @ 70 °C
  • Rotational Life: 200 cycles
  • Torque: 3.0 oz-in. max.
  • Mechanical Stops: Wiper idles
  • Terminals: Solderable pins
  • Weight: 0.035 oz.
  • Marking: Manufacturer’s trademark, resistance code, wiring diagram, date code, manufacturer’s model number and style
  • Wiper: 50 % (Actual TR) ±10 %
  • Flammability: U.L. 94V-0
  • Standard Packaging: 50 pcs. per tube

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Frequently Asked Questions

Where can I buy Bourns 3299X1253LF?

You can click on the BUY or RFQ button to purchase 3299X1253LF from an authorized Bourns distributor.

How do I troubleshoot issues or seek technical support for part 3299X1253LF?

You can download the 3299X1253LF datasheet or visit the Bourns website for support.

Who is the manufacturer of 3299X1253LF?

Bourns

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