About PartVault

Last updated: 2026-09-18

What this site is

PartVault is a working index of electronic components, written for people who have to choose a part, recognise an unmarked one, or replace something that has gone out of production. It is published at https://gathered.top in English and Simplified Chinese, with the same catalogue in both languages rather than a translated subset.

The index currently covers six families: Resistors, Capacitors, Diodes, MOSFETs, Logic ICs, Connectors. Every part gets the same treatment — a specification table, a substitute graph, a lifecycle state, a sourcing risk judgement, and a short set of selection notes about the thing that actually catches people out with that specific device.

How a profile is written

Each profile starts from the manufacturer datasheet and from the numbers on it that decide a design: temperature coefficient and derating for a resistor, dielectric class and voltage derating for a capacitor, reverse recovery and leakage at temperature for a diode, the gate voltage at which Rds(on) was measured for a MOSFET, supply range and floating-input behaviour for a logic device, and thermal plus mechanical ratings for a connector.

The specification table gives the headline numbers. The selection notes give the qualification — the derating caveat, the second-order parameter that ruins a naive substitution, the reason a cheaper alternate is not actually equivalent. Numbers are quoted in the datasheet's own units and at the datasheet's own test conditions; where a figure is typical rather than guaranteed, the notes say so.

The substitute graph

Substitutes are listed with an explicit trade-off rather than a yes/no verdict, because a substitute is rarely free: it costs you a slower recovery, a wider tolerance, a lower temperature ceiling, a different pinout, or a package you cannot place with your existing stencil. A solid node in the graph means the alternate already has its own profile in this catalogue, so you can read its numbers directly. A hollow node means the alternate is a valid substitution but has not been profiled yet.

How the catalogue grows

Profiles are published on a schedule rather than all at once. Each one carries a publication date, and only profiles whose date has arrived are reachable: they appear in the matrix, in the family pages, in the substitute graphs and in the sitemap. A profile that is still scheduled returns a genuine 404 and is linked from nowhere. The result is that the catalogue grows by a small batch at a time, and every entry you can reach has been reviewed at the point it went live.

What this site is not

• Not a distributor. There is no stock, no pricing, no cart and no order path anywhere on this site.
• Not an affiliate page. Outbound links point at manufacturer documentation, never at a storefront carrying a tracking parameter.
• Not a substitute for the datasheet. The datasheet is the authority; this index is a map of where to look and what to check.
• Not design consulting. The notes describe the trade-offs, they do not approve your circuit.

Corrections

Component data goes stale: a part goes NRND, a tolerance is tightened, a package is discontinued. If something here is wrong or out of date, send the part number and the datasheet reference to [email protected] and it will be checked against the current revision. Corrections that cite the document they come from are handled first.

How it is built

The site is a static build. Every page is generated ahead of time from a validated data set, which is why it loads without a database round-trip and why the catalogue is fully readable with scripting disabled. The package drawings are generated as vector line drawings from the package dimensions rather than photographed from stock, so they carry real measurements and stay legible at any zoom level.

Contact

[email protected] — see the contact page for what to include. Privacy practices are described in the privacy policy; use of the site is governed by the terms of use.