As fabs ramp complex products and advanced nodes, process constraints such as Queue Timers (QTimers), also known as timelinks or critical time loops, have become essential to maintaining wafer yields.
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However… While QTimers help ensure product quality, they often come at a significant cost to tool utilization and throughput. Tight queue time windows, combined with the difficulty of coordinating tool sets across multiple process steps, make these constraints notoriously hard to schedule. To stay safe, many fabs rely on overly conservative WIP release policies and dispatch logic, unintentionally stranding valuable capacity.
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The result? Yield targets may be met, but cycle time and utilization suffer.

What you’ll learn in this webinar

⇢ Why traditional approaches to QTimer management unnecessarily restrict capacity

⇢ How conservative scheduling rules create stranded capacity

⇢ The real scheduling challenges behind QTimers in high-mix fabs

⇢ How an advanced optimization-driven scheduler can handle even the most complex QTimer constraints, enabling fabs to achieve targeted yields with minimal impact on throughput.

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