3224W-1-502E – Resistor – Bourns

Trimmer Resistors – SMD 4mm 5Kohms 10% Square Cermet Sealed

Precision Circuit Adjustment Solution

The Bourns 3224W-1-502E trimmer potentiometer delivers reliable resistance tuning for precision electronics. Designed for surface-mount applications, this sealed 5 kOhm device offers 12-turn calibration accuracy with top adjustment access. Ideal for factory-set calibrations and circuit optimization where consistent performance is critical.

Key Features

• Resistance: 5 kOhms ±10% tolerance
• Power Rating: 0.25W (1/4W)
• Temperature Coefficient: ±100ppm/°C
• Adjustment Type: Top-access with 12 turns
• Sealed Construction: Protects against contaminants
• Compact SMD Design: 4.80mm x 3.50mm footprint

Technical Specifications

• Series: Trimpot® 3224 – Sealed
• Resistive Material: Cermet for stable performance
• Mounting: Surface Mount (SMD)
• Termination: J Lead contacts
• Operating Temperature: -55°C to +125°C
• Base Part Number: 3224W

Download Full Datasheet (Hosted on PCXCo.com)

Typical Applications

• Power supply voltage calibration
• Sensor sensitivity adjustment circuits
• Audio equipment gain control
• Industrial control system tuning
• Medical device calibration modules

About Bourns

Bourns Inc. is a globally recognized leader in electronic components, with over 75 years of innovation in circuit protection, sensors, and resistive products. Their Trimpot® series represents industry-standard reliability in trimmer potentiometers, known for consistent performance in demanding environments.

Bourns maintains rigorous quality certifications including ISO/TS 16949, ensuring automotive-grade reliability across their product lines. Their patented sealing technologies provide superior protection against moisture, dust, and chemical contaminants – making 3224 series components ideal for harsh industrial applications.

About Trimmer Potentiometers

Trimmer potentiometers are precision variable resistors used for circuit calibration and optimization during manufacturing or maintenance. Unlike standard potentiometers, they’re designed for infrequent adjustment using tools rather than knobs, providing “set-and-forget” functionality in compact designs.

These components are essential for fine-tuning voltage dividers, setting reference voltages, and calibrating sensor thresholds. Surface-mount trimmers like the 3224W series enable high-density PCB designs while maintaining adjustment accessibility – critical in modern electronics where board space is limited but precision is paramount.

Packaging Options

• Tape & Reel (TR) for automated assembly
• Cut Tape (CT) for prototyping needs
• Digi-Reel® for flexible quantities

Note: Product images are representational; refer to datasheet for exact dimensions.

Frequently Asked Questions

Q: What tools adjust this trimmer potentiometer?
A: Requires a standard flat-blade screwdriver (2.5mm width) for top adjustment.

Q: Is this suitable for automotive applications?
A: Yes, the sealed construction and -55°C to +125°C range meet typical automotive requirements.

Q: Can I hand-solder this SMD component?
A: While designed for reflow soldering, careful hand-soldering is possible using J-lead compatible techniques.

Q: What’s the difference between cermet and carbon trimmers?
A: Cermet offers lower noise, better temperature stability, and longer lifespan compared to carbon elements.

Q: How many adjustment cycles does it support?
A: Rated for 200 full rotation cycles minimum while maintaining specified tolerance.

Q: Are these RoHS compliant?
A: Yes, Bourns 3224 series meets current RoHS 3 directives.

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