Bourns 3299 1M Ohm Top Adjust Trimmer 25 Turn
Precision 25-turn trimmer, 1MΩ resistance, top adjust, cermet element, IP65 rated, through hole SIP. Ideal for fine circuit adjustments.
The Bourns 3299 Trimmer is a cermet, multi-turn through hole trimming potentiometer designed for precise circuit adjustments in a broad range of electronic equipment. This 25-turn trimmer offers fine-tuning capabilities, making it ideal for applications requiring accurate adjustments, such as measuring linear distance, angle, or rotation in production equipment.
Featuring a compact 3/8 inch square package, this potentiometer provides either side or top adjustment via a lead screw. It is sealed to IP65 standards, offering reliable performance in various environments. With a rotational life of 200 cycles, it ensures durability and consistent operation.
Key Features
- 25-turn adjustment for precise tuning
- Cermet element material for stability
- Top adjust with lead screw
- IP65 rated sealing for environmental protection
- Resistance value: 1MΩ
- Tolerance: ±10%
- Temperature coefficient: ±100ppm/°C
- Operating temperature range: -55°C to +125°C
- Power rating: 0.5W (500mW)
- Through hole (SIP) mounting
- 5 popular terminal styles with standoffs allow thorough PC board washing
This trimmer is a versatile component suitable for a variety of electronic applications. Its compact size and reliable construction make it a preferred choice for engineers and manufacturers alike.
- Measuring linear distance
- Measuring angle or rotation in production equipment
- Circuit adjustments in electronic equipment
- Trimmer Type: Multi Turn
- Element Material: Cermet
- Adjustment Type: Top Adjust
- Track Resistance: 1MΩ
- Potentiometer Mounting: Through Hole
- No. of Turns: 25 Turns
- Product Range: 3299 Series
- Power Rating: 500mW
- Resistance Tolerance: ±10%
- Temperature Coefficient: ±100ppm/°C
- Trimmer Shape / Size: 3/8 Inch Square
- Resistor Case / Package: SIP
- Operating Temperature Min: -55°C
- Operating Temperature Max: 125°C
- Sealing: IP65 rated
- Rotational Life: 200 cycles
- Terminal Styles: 5 popular styles with standoffs
- of Turns: 25Turns
- SVHC: Lead (04-Feb-2026)
Documents
Always follow local regulations and product guidance.
Free standard delivery on UK mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For faulty items, contact us within 14 days for a replacement or refund.
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