100 PCS WH28A-3A-B504 500kΩ Red Rotary Potentiometer Bulk Pack

100-Pack WH28A-3A-B504 Red Circular Rotary Potentiometer

Stock up and save with this bulk pack of 100 high-quality WH28A-3A-B504 rotary potentiometers. Featuring a bold red circular dial and a 500kΩ (B504) resistance value, these panel-mount governor knobs are ideal for electronics projects, prototyping boards, DIY audio equipment, motor speed control circuits, and industrial control panels. Each unit delivers smooth, reliable rotation with consistent resistance output — perfect for engineers, hobbyists, and repair technicians who need dependable components in quantity.

Key Features

• Model: WH28A-3A-B504 (500kΩ linear taper)
• Quantity: 100 pieces per pack — great for bulk projects and restocking
• Dial Style: Red circular rotary governor knob for easy manual adjustment
• Application: Speed control, volume control, signal attenuation, DIY electronics
• Type: Panel-mount single-turn rotary potentiometer
• Build: Durable construction for long-lasting, consistent performance

What's in the Box?

• 100 × WH28A-3A-B504 Red Rotary Potentiometers

Made in Mainland China.

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Frequently Asked Questions

Q: What resistance value do these WH28A-3A-B504 potentiometers have?

A: The "B504" code indicates a 500kΩ linear taper (B-taper) resistance value. This makes them well-suited for signal-level control, audio mixing, speed governing, and general-purpose electronic circuit applications.

Q: Are these potentiometers compatible with standard panel-mount enclosures?

A: Yes. The WH28A (φ28mm) form factor is a standard size that fits common panel-mount cutouts. They are widely used in DIY electronics, control panels, and prototyping applications. Always verify the shaft diameter and mounting hole dimensions against your specific enclosure before installation.

Q: Why buy 100 pieces at once?

A: Buying in bulk ensures you always have spares on hand for prototyping, production runs, repairs, or classroom and workshop use. The per-unit cost is significantly lower compared to purchasing individual pieces, making this pack ideal for engineers, educators, and electronics enthusiasts.

Q: Are these potentiometers RoHS compliant or free from high-concern chemicals?

A: According to the product specifications, no high-concern chemicals are listed for these components, making them suitable for general electronics assembly and hobby use.