Skip to content
Shared platform · Device & edge

PCB Library

Every board the group has built leaves something behind: a footprint that turned out correct, a power stage that passed EMC, a part that was available when its alternative was not. The PCB library is that memory, held as verified symbols, footprints, reference blocks and an approved manufacturer list.

What it does

Inside the platform

01

Verified footprints & symbols

Library parts proven on a manufactured board, not drawn from a datasheet and hoped for.

02

Reference blocks

Power stages, protection, comms interfaces and sensor front-ends reused across designs instead of redrawn.

03

Approved parts & alternates

An AML with qualified second sources — the practical answer to a supply chain that keeps moving.

04

Design rules by class

Stack-up and clearance rules by product class, from commercial to airborne.

How it fits together

The shape of the work

An eight-layer stack-up, decided before anything is routed

Which layer a signal lives on is not a routing convenience — it is what sets its impedance, its return path and how much it radiates. Choosing the stack-up after routing means re-doing the routing, so the class of the product fixes it on day one.

CROSS-SECTIONL1 · SignalComponents, controlled-impedance routingL2 · GNDReference plane — unbroken beneath L1L3 · SignalHigh-speed differential pairsL4 · PWRPower planeL5 · GNDReference planeL6 · SignalSlow signals, controlL7 · PWRSecondary railsL8 · SignalBottom side components, test pointsThrough via — all layersBlind via — L1 to L3Buried via — L3 to L6100 Ω differential pair, referenced to the unbroken plane directly beneath itBreak that plane with a slot and the return current goes the long way round — which is where the EMC failure comes from.Stack-up, clearance and creepage rules are held per product class: commercial, industrial, and airborne.
Who builds on it

Used across the group

  • Every hardware programme in the group

Ownership

A shared platform. It has no natural home in any single unit, so the group funds it centrally and the shared engineering bench maintains it. Every company and division draws on the same version.

How we decide what is shared

Building something that needs PCB Library?

Tell us the constraints and we will come back with how this platform would carry them — or say plainly if it would not.