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EEVblog #16 - CMOS SCR Latchup Tutorial - YouTube
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Earlier is better in latch-up detection
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What is latch-up and how to test it
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Latch thyristor parasitic fig result
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Earlier Is Better In Latch-Up Detection

Latch-Up
What is Latch-Up and How to Test It - AnySilicon

Latch-Up Problem in CMOS – VLSI Design – Buzztech

Analog IC co-design for latch-up compliance - EDN Asia

EEVblog #16 - CMOS SCR Latchup Tutorial - YouTube

Figure 1 from High Holding Current SCRs (HHI-SCR) for ESD protection

SR-Latch