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When does a protoPCBA stop being a proto?

Harm Slijkhuis
Harm Slijkhuis
Sales Engineer
2026-05-06

When does a protoPCBA stop being a proto?

When you build 10 of them… but you're still learning.

That's what we call a proto series.

Not to run volume or optimise your process, but to get answers to the real questions: * does your design also keep working outside the lab? * how reproducible is your design? * where are the hidden risks still hiding?

A single proto says: "it works."

A proto series says: "it keeps working."

We deliberately adapted our process for this.

Our single-piece-flow process is ideal for speed and iterations, but less suited to small series.

That's why we expanded with extra pick & place capacity. * more consistent quality * better reproducibility * without losing speed

And just as you're used to from us: First 1 or a few units up front. And then the rest as fast as you want.

So you don't build a series you don't trust. Or one with a mistake that slipped in anyway (because DeltaProto and our suppliers make mistakes sometimes too...).

What we see in practice: Customers also use this phase to benchmark EMS partners and collect DFM feedback from them.

Smart — because you're comparing apples to apples.

So the real question is: when do you switch from "proto" to "proto series"?

Too early = a waste of your money Too late = a waste of your time

#SuperFastProtoPCBAservice

When does a protoPCBA stop being a proto? - image 1