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Excellence In Component Distribution

We offer creative supply chain solutions to meet your requirements. At Testco, we are at the brink of our own Genesis—everything you've come to know us for, and more.

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About Testco

Located in the heart of Silicon Valley, Testco has been serving technology companies worldwide for over 40 years. Our success comes from a sharp focus on customer satisfaction by utilizing a limited line card. This allows us to offer superior technical expertise with broad product knowledge.

We specialize in electromechanical, circuit protection, and sensor components. From personal delivery in Silicon Valley to daily shipments across Asia and Europe, we deliver creative supply chain solutions tailored to your needs.

Flexible Blanket Orders

Manage inventory efficiently with long-term agreements.

Bonded Inventory

Secure stock without upfront capital investment.

Consolidated Shipments

Reduce logistics costs with combined deliveries.

Annual Pricing Programs

Lock in pricing for predictable budgeting.

Testco Warehouse

Our Product Categories

We offer a wide range of electronic components from trusted manufacturers, focused on reliability, performance, and innovation.

Circuit Protection

Fuses, circuit breakers, and thermal protectors from E-T-A®, Therm-O-Disc™, and more.

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Relays

Signal, power, and reed relays from Pickering, Coto Technology, and Viking.

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Switches

Microswitches, tactile, and rotary switches from Saia, Comus, and Standex.

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Sensors

Current, temperature, and position sensors from Isabellenhütte and Therm-O-Disc™.

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Motors

Precision motors and solenoids from Johnson Electric, Ledex, and Saia Motor.

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Optoelectronics

LEDs and indicators from Dialight and Halo for industrial and consumer applications.

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Resistors

Precision current shunts and resistors from Isabellenhütte and Sullins.

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Connectors

Board-to-board, wire-to-board, and power connectors from Sullins and Bel Fuse.

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Magnetics

Transformers, inductors, and chokes from Bel Fuse and Paquin.

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Fans

Cooling fans and blowers from Dormeyer and Johnson Electric.

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Solenoids

Linear and rotary solenoids from Ledex and Johnson Electric.

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Commodities

Bulk electronic components and value-added services for high-volume needs.

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Trusted Manufacturers

We partner with industry-leading brands to deliver high-quality, reliable components.

Bel Fuse Burgess Celduc Coto Technology Dialight Dormeyer E-T-A Halo Isabellenhütte ISAscale Johnson Electric Ledex
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Contact Testco

For inquiries about our supply chain solutions, product availability, or technical support, reach out to our team.

Phone

Toll Free: 800-748-6285

Headquarters: 408-253-1900

Address

1290 Kifer Road, Suite 308
Sunnyvale, CA 94086

Hours

Monday - Friday: 7:30 AM – 5:00 PM Pacific Time

Summer Hours (Memorial Day to Labor Day): Mon–Thu 7:30 AM – 5:00 PM, Fri 7:30 AM – 4:00 PM PDT

Get in Touch

Visit our official website to submit a quote request or contact our sales team directly.

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