ProductsProbe Holders (Custom Test Fixtures)

Precision Fixture Solutions for High-Accuracy Electronic Testing

In modern electronics testing, accuracy starts with stability—and Seiken’s probe holders deliver both. These precision-engineered fixtures ensure secure and reliable contact between test probes and target electrodes, forming the foundation for consistent, high-quality measurements in inspection and debugging environments.
Also known as pin blocks, pin jigs, probe blocks, or pin boards, our custom probe holders are trusted across industries to streamline test operations, reduce misalignment, and enhance throughput. Whether you’re working with complex components, high-density boards, or devices under special environmental constraints, Seiken’s probe holders are built to meet your exact requirements.

Probe Holders (Custom Test Fixtures)

Why Choose Seiken’s Probe Holders?

Probe Holders

Electronic components come in all shapes and sizes—and your fixture should, too. From layout flexibility to material selection (resin, metal, and more), every Seiken probe holder is engineered to match your unique specifications and test environment.

A well-designed probe holder offers:

  • Reliable Contact: Prevents probe misalignment for stable measurements
  • High Precision: Enables accurate, repeatable measurements
  • Enhanced Efficiency: Speeds up setup and reduces downtime

As a manufacturer of both probes and fixtures, Seiken can deliver a fully integrated solution, including custom wiring and connector for deplyment into your test system. Whether you need a single component or a full fixture system, we’re here to help.

Key Features & Advantages

01 Custom designs for complex testing scenarios

Need a probe holder for high-temperature conditions? A fixture for non-magnetic environments? Seiken specializes in fully custom solutions. Our engineers collaborate with you to develop fixtures that align with your application—no matter how challenging.

02 Supporting a wide range of Industries

Seiken’s probe holders aren’t just for electronics and semiconductor testing—they’re also trusted in automotive component testing, medical devices, and even in R&D for advanced materials evaluation. Wherever accuracy is critical, our fixtures rise to the occasion.

03 Flexible solutions from prototypes to mass production

We support all stages of development—from early prototyping to mass production. Our scalable approach ensures you get the precision you need at every stage of your product’s testing.

Application Examples

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  • Semiconductor packages
  • Modules
  • PCBs
  • Other discrete components（MLCC,inductors, etc.）
  • Connectors, etc.

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Applications of Seiken’s probe holders

Seiken’s probe holders are engineered to support a wide range of electronic component inspections, from standard tests to highly specialized evaluations. Below, we highlight some application examples that showcase our capabilities and our commitment to delivering flexible, custom-tailored solutions.

Connector Testing Fixtures

Our custom jig heads are widely used in connector inspections and automated testing setups. As the industry moves from connector-to-connector to probe-pin contact methods, Seiken leads the way with efficient, precision jigs—trusted by many clients.

MLCC Testing (Multilayer Ceramic Capacitors)

With the shrinking size of MLCCs in smartphones, PCs, vehicles, and other consumer electronics testing requires ultra-precise handling. Seiken’s probe holders are proven in the evaluation of automotive-grade MLCCs, offering the durability and repeatability needed for development and production.

Beyond Testing: New Applications

Our Total Test Solution approach means we look beyond conventional uses. Seiken Probe Holders and probe pins are also ideal for:

Custom Switch Connectors

Probe pins, known for their excellent conductivity, can be used as miniaturized electrode pins for space-limited devices (e.g., wearables, earbuds).

Holding & Positioning Devices

Due to the spring characteristics of probe pins to lift, hold, align, or remove devices, probe holders can be used during vacuum transport or tray handling.

Let’s Explore What’s Possible

Not sure what kind of fixture you need? No problem. Whether you have a rough idea or a fully formed spec, our team will help turn your concept into a high-performance testing solution. Many clients discover new possibilities through our custom proposals. Your ideas fuel our innovation. Get in touch and discover what a custom Seiken probe holder can do for your test strategy.

Custom solution examples

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