tag: test sockets

What’s Failing At The Interface
By Gregory Haley - 07 Apr, 2026 - Comments: 0

Key Takeaways The interface is where failures in advanced packaging become visible, but it's increasingly not where they originate. Weak interfaces often don't fail at time zero, but they do degrade due to parametric drift and margin erosion that binary test screens miss entirely. The temporary test interconnect is the largest variable in the measurement chain and must be controlled ... » read more

Maximize Your Revenue With High-Speed Test Performance Optimization
By Jesse Ko - 10 Mar, 2026 - Comments: 0

In today’s competitive semiconductor market, revenue growth is often associated with design innovation, process advancements, or packaging breakthroughs. However, a powerful and frequently overlooked revenue lever lies much closer to production: high-speed test performance optimization. Test variability—particularly at high frequencies—can significantly influence product binning, yield... » read more

Enhancing Test Socket Performance Through Application-Specific Validation And System-Level Per-Pin OQC
By Jesse Ko - 14 Oct, 2025 - Comments: 0

As semiconductor devices continue to advance, the demand for reliable, high-performance test sockets has never been greater. Yet, traditional socket design validation methods—such as per-pin characterization and generic housing evaluations—often fall short of reflecting true application specific system-level performance. This gap between lab measurements and real-world application not only ... » read more

Metrology’s Growing Role In Reducing False Defects
By Gregory Haley - 14 Oct, 2025 - Comments: 0

When a good die fails test and gets scrapped, often no one notices, because false failures look identical to real ones. Yet across the industry, these phantom defects are quietly eroding yield, inflating test costs, and masking the true health of manufacturing processes. At advanced nodes and in heterogeneous packaging, where margins are already razor-thin, even minor variations in contact r... » read more

Case Study: Production Yield And Throughput Improvement Using The Known Good Socket Analysis
By Jesse Ko - 09 Sep, 2025 - Comments: 0

The test sockets, which are crucial components that directly interface with semiconductor IC packages, have a profound impact on device testing performance. Pins with high CRES not only cause false failures in the test but also lower bin grading results, which in turn increase the manufacturing cost due to reduced production performance. The ever-increasing demand driven by high-performance com... » read more

The Hidden Cost Of Contact Resistance
By Gregory Haley - 09 Sep, 2025 - Comments: 1

Contact resistance, or CRES, is one of those problems that most engineers prefer not to think about until it's staring them in the face. For years, it could be managed quietly with routine probe card cleaning or a scheduled socket swap. That approach worked well enough when pin counts were lower and devices pulled less current, but the ground has shifted since then. Today’s AI processors m... » read more

Coaxial Test Sockets Are In The Critical Path Of Advanced AI/CPU Products
By Jack Lewis - 08 May, 2025 - Comments: 0

Advanced AI/CPU processors demand extreme high frequency and power performance from SLT and ATE test sockets. These sockets are in the critical path at the end of a very costly silicon fabrication and advanced packaging manufacturing process. Yield loss at this point in the process is catastrophic to the bottom line. We at Modus Test, working in conjunction with our customers, have seen first-h... » read more

Comparison Of State-Of-The-Art Models For Socket Pin Defect Detection
By Vijayakumar Thangamariappan - 10 Oct, 2023 - Comments: 0

This article is adapted from a presentation at TestConX, March 5-8, 2023, Mesa, AZ, by Vijayakumar Thangamariappan, Nidhi Agrawal, Jason Kim, Constantinos Xanthopoulos, Ira Leventhal, and Ken Butler, Advantest America Inc., and Joe Xiao, Essai, Advantest Group. Test sockets have a key role to play in the semiconductor test industry. A socket serves as the critical interface between a teste... » read more

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