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Johnstech International Corporation

Minneapolis,  MN 
United States
http://www.johnstech.com
  • Booth: J2755

The Global Leader in Test Contactor Solutions.

Overview

JOHNSTECH INTERNATIONAL is a global R&D leader in the field of semiconductor testing, providing reliable, cost-effective testing solutions for automotive, commercial, and industrial applications. Founded in 1991 by David Johnson, Johnstech works hand-in-hand with the world’s most respected OSATs, foundries, and IDMs to develop the most precise and dependable test contactors on the marketplace today.


  Press Releases

  • Minneapolis, Minnesota, USA – Johnstech International, a global leader in precision semiconductor test contactors and solutions, will present its latest high-performance test technologies at SEMICON Taiwan 2026, held September 2–4 at the Taipei Nangang Exhibition Center. Building on more than three decades of innovation in semiconductor test, Johnstech will highlight new advancements that help customers maximize yield, reduce cost of test, and accelerate time-to-market across automotive, industrial, AI, RF, and high-speed digital applications.

    Since 1991, Johnstech has set the standard for high-performance test contactors that deliver low, stable contact resistance, robust tri-temperature performance, and exceptional long-term reliability. The company partners closely with leading OSATs, foundries, and IDMs worldwide to solve complex test challenges for devices in packages such as BGA, LGA, QFN, DFN, QFP, and WLCSP. At SEMICON Taiwan 2026, Johnstech will emphasize how its patented contact technologies and engineering expertise enable higher first-pass yields, longer maintenance intervals, and improved test repeatability in demanding production environments.

    At the show, Johnstech will feature its HERØHC® and HERØHF® spring probe solutions for system-level test, high-speed digital, and high-frequency applications, which are designed to improve compliance to warped devices, reduce dependence on elastomer-based sockets, and minimize insertion loss for accurate high-speed measurements. The company will also highlight HERØCOAX™ for stable signal integrity in demanding high-speed channels, along with its VROL® solid contact families, which provide self-cleaning wiping action, low and reliable contact resistance over life, and longer intervals between cleaning to boost uptime and reduce overall cost of test. In addition, Johnstech’s J-Tuned® performance-optimization services help customers improve signal integrity, accelerate characterization, and de-risk test hardware designs for RF, precision analog, and AI-related devices.

    Johnstech’s solutions are engineered to support tri-temperature, high-current, and high-frequency test conditions common in AI accelerators, safety-critical automotive systems, industrial controls, and advanced communications devices. The HERØ product family addresses challenges such as DUT warpage, tight pitches, and aggressive data rates, helping customers maintain signal integrity while achieving strong mechanical robustness and test stability. For RF, precision analog, and power applications, Johnstech’s ROL® and VROL® solid contact technologies deliver superior current-carrying capability and lower insertion loss than comparable spring probe solutions of similar pitch.

    With a global engineering team and expanded manufacturing capabilities, Johnstech delivers consistent quality and resilient supply to OSATs, foundries, and device makers around the world. The company has strengthened its local support in Asia, including Taiwan, to provide faster response times, collaborative design engagement, and on-site assistance throughout the test development and production lifecycle. This combination of local presence and global R&D leadership positions Johnstech as a trusted partner for customers seeking to upgrade legacy sockets, qualify new packages, or migrate to higher frequencies and more complex system-level test strategies.

    SEMICON Taiwan remains one of the most influential semiconductor events in the region, connecting the global supply chain and spotlighting advanced manufacturing, heterogeneous integration, compound semiconductors, auto chips, smart manufacturing, sustainability, and workforce development. Johnstech invites show attendees to visit us in booth J2755 at the Taipei Nangang Exhibition Center to explore its HERØ®, VROL®, and J-Tuned® portfolios, discuss specific high-speed digital, RF, power, AI, and automotive test challenges with Johnstech engineers, and learn how optimized test contactor specifications and solid-contact technologies can improve yield, extend maintenance intervals, and reduce the total cost of test.

    To schedule a meeting at SEMICON Taiwan 2026, visitors are encouraged to contact their regional Johnstech sales representative or reach out to the Johnstech marketing team via the contact information on johnstech.com.

    About Johnstech International

    Founded in 1991 and headquartered in Minneapolis, Minnesota, Johnstech International provides innovative, high-performance precision test contactors and related solutions to semiconductor manufacturers worldwide. The company’s mission is to deliver reliable, cost-effective, and customizable test solutions that ensure customer success across a broad range of applications, from AI and high-speed digital to automotive, industrial, and consumer electronics.


  Products

  • HERØHC
    The HERØHC Contactor featuring High Compliance Spring Probes is a cutting-edge test solution engineered to meet the stringent requirements of modern test environments.
    ...

  • High Compliance: The probe's advanced design allows for superior compliance, enabling it to maintain contact with test points even in challenging conditions. Overcome package variations such as housing bow, non-coplanarity and package warp.

    Reliability: Built with high-quality materials, HERØHCTM offers long-term reliability and consistent performance, reducing downtime and maintenance costs.

    Durability: With a robust construction, HERØHCTM is capable of withstanding frequent use in demanding test environments, ensuring a long service life.

    Compatibility: The probe is compatible with a wide range of test equipment, making it a versatile solution for various testing applications.

    All Contactors will be available for Engineering test/characterization with a Manual Actuator and are ready for high-volume automated testing.

    Improved Test Accuracy: High compliance and precision ensure accurate test results, enhancing overall test quality.

    Increased Efficiency: HERØHC’sTM reliability and durability reduce downtime, allowing for more efficient testing processes.

    Versatile Application: Compatible with various test equipment, the HERØHCTM offers flexibility for diverse testing requirements.

  • VROL
    Solid Pins with Self-Cleaning Wiping Action...

  • When a solution is needed for leaded devices that will be easy to maintain and will provide repeatable high-quality results, you can look to VROL®. In the test industry, the desire for highly consistent yield and a decreased downtime is ever-present, and this is where our patented VROL® will shine.
    The performance and self-cleaning wiping technology that Johnstech is known for, is taken to the next level with VROL®. The high frequency performance of VROL® opens the doors for use in any application, & the wiping action of VROL® will clear any debris off the device pad and make sure your testing is successful.
    VROL® is compatible with previous Johnstech products so there is no need to change set ups! You can deploy VROL® on your current loadboard with existing hardware and you are ready to test!
    In today’s test environment it is imperative that your solution brings high performance and consistent results, which are pillars of Johnstech technologies. We are helping our customers save time and money by supplying solutions that are well equipped to deliver successful results.
  • HERØHF
    HERØHF is our patented solution designed for test engineers working with high-frequency applications....

  • High Frequency Capability: The contactor is engineered to handle high-frequency signals with minimal signal loss, ensuring accurate and reliable test results.

    Spring Probe Design: Utilizing high-quality spring probes, the contactor offers optimal contact force to maintain reliable contact with test points.

    Low Insertion Loss: The contactor's design minimizes insertion loss, preserving signal integrity and ensuring accurate measurement data.

    Durable Construction: Built with robust materials, the contactor is capable of withstanding frequent use in challenging test environments.

    Compatibility: The contactor is compatible with a wide range of test equipment, making it a versatile solution for various high-frequency testing applications.

    • Suitable for BGA, LGA, QFN, and WLCSP applications.
    • Designed with single-ended architecture to minimize Cres variability.
    • Easy in-line cleaning with Pd alloy probe tips that stick out further than the competition.
    • Very good compliance with a 1mm Test Height.
    • All Contactors are available for Engineering test characterization with a Manual Actuator and are ready for high-volume automated testing.
    • Ideal for Gallium Nitride (GaN) and Silicon Carbide (SiC) applications.
  • Shoto & Yari
    Johnstech’s SHOTO™ test solution offers a reliable, cost effective, top-of-the-line test contactor manufactured specifically for the highly competitive commercial test marketplace....

  • Johnstech International, a global leader in the semiconductor test industry, has added two spring probe product lines to their premium test portfolio. Engineered by industry experts with more than 30 years of spring pin design expertise, Johnstech’s SHOTO™ test solution offers a reliable, cost effective, top-of-the-line test contactor manufactured specifically for the highly competitive commercial test marketplace.

    Available with crown and spear tips, the SHOTO product line is suitable for BGA, LGA, QFN, and WLCSP applications. Additionally, the SHOTO 3.0mm test height features a single-end architecture to maximize CRES stability, provide compliance flexibility, and frequency performance for both small and large array packages. Each solution is compatible with a floating alignment plate for accuracy and the Pd-alloy tip is easy-to-clean, lengthening MTBA.

    • Pitches down to 0.2mm
    • Frequencies up to ≈25GHz to be targeted
    • Package sizes up to 20x20 mm
    • High RF performance
    • Environmental Temperature Range -60 to 175°C
    • Reliability Typical Probe Life 500,000 cycles

    All Contactors will be available for Engineering test/ Characterization with a Manual Actuator and are ready for high-volume Automated Testing.

  • J-Tuned Performance Optimization
    Our system-level approach to modeling coupled with our tunable contact solutions....

  • Partner with Johnstech and get your contactor J-tuned™. When your contactor solution is J-tuned™ we save you time and money by highlighting performance enhancement opportunities for your contactor. Our system-level approach to modeling coupled with our tunable contact solutions can simply predict the performance of your contactor, or expand to include your device, load board, and contactor system. Performance optimization also extends to mechanical & thermal modeling giving you a 360° view of your device’s performance.

    Typical modifications resulting from J-tuning:

    • An optimized contactor interface to your load board design
    • Package Layout Simulation from Device to I/O
    • Trace and pad characteristics
    • Impedance Optimization
    • And more….