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Data Methodology

Last updated October 12, 2026 · This page is published by MemSignal.

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How a figure on MemSignal gets to be on the page — and what it does and does not mean.

Quote record fields

The table below describes a priced quote record. It is not the layer that is live today: spot listings publish no price.

Field	What it means	Where it comes from
Part number	Manufacturer’s own ordering code, unmodified	Supplier report
Date code (DC)	Manufacturing week/year of the stock being quoted	Supplier report
Quantity	Units the supplier reported available at quote time	Supplier report — not independently audited
Unit price	Indicative price for the stated quantity and DC	Supplier report
Quote time (UTC)	When we received it	Our system
Valid until	Until when the supplier undertook to hold the terms	Supplier report
Cargo grade	Brand-new original / Excess stock / Pulled — the condition of the batch on offer	Supplier report, confirmed at verification

What a quote is not

Trade quotes shown on this site are not equal to global transaction prices. A quote is a supplier-reported, time-bound indication. It is not an offer we can hold, not a price you can rely on after its validity date, and not a guarantee of availability, date code or lead time.

Verification steps

1. Sample sufficiency

Quotes are only shown where the supplier reported a meaningful quantity, not a single-unit probe price.

2. Timestamping

Every record carries a UTC receipt time and an expiry. Neither is editable after entry.

3. Source review

Supplier identity is checked and pricing consistency cross-checked against other records for the same part.

4. Manual review

An analyst reviews outliers before they appear. Nothing here is published by a model alone.

Trend figures

Directional charts are computed from the quote records above over a stated window. A percentage change is always shown with the window it covers and the date it was cut. Where the underlying sample is thin, we publish the direction and withhold the number.

Specifications

Part specification pages are compiled by our own engineering team from publicly available information. They are a convenience, not a substitute for the manufacturer’s document, and we link to the manufacturer rather than hosting their file. Verify all parameters before design-in.

Contact

Questions about a specific figure: send us the part number and the quote date and we will tell you what we can about its provenance. You can also email support@memsignal.com.

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