About

Wafer Note is an English-language explainer for readers in the United States. The public name is Wafer Note. The line under the name is the brief: how chips are made, and what people mix up about them.

Halo publishes the site. The notes stay on process, the fab floor, and the mix-ups that appear when a brochure number, a test step, or a plant metric is flattened into one percentage.

Lanes

Process is geometry and naming: nodes, pitches, stacks, and why a marketing integer is not a ruler reading.

Fab floor is a step as it actually runs: what touches the wafer, what a tool is doing, and what leaves with the lot.

Mix-ups is the pair of words that sound interchangeable on a tour and are not — yield against utilization, sort against package test, a node against a transistor size.

The site does not cover consumer gadgets as product reviews. It does not cover personal finance. It is a notebook, not a foundry manual and not a substitute for the spec in front of you.