A3 Through-Hole (THT) AOI
Built for the through-hole line.
AI inspection of through-hole components before wave or selective soldering. A top camera images the component side, and dedicated AI algorithms check pin presence and insertion and detect missing, wrong, reversed and offset parts. Solder joints are inspected after the wave by the A5 and A6.
Key specifications.
Compare optics, board capacity and handling specifications to find the right fit for your production.
Metric specifications are shown with approximate imperial equivalents.
For full details, download our brochure.
Hardware specifications are reference values and may vary by configuration.
Explore our inspection capabilities and plant integration features. Available checks depend on the machine and configuration.
The same core AI software across the range.
Auto-programming, feedback learning, model training and offline operation are standard on A3, not options on a price list. The machines differ in optics and handling.
Explore the machine range.
Benchtop AOI that runs beside the line — prototypes, small batches, and rework.
Sits in the SMT conveyor line and inspects every board at production speed.
Adds height measurement to catch lifted leads, coplanarity, and solder-volume defects.
Built for THT boards: pin and component checks before the wave (A3) and solder-joint inspection after it (A5, A6).
Further reading
- Through-Hole (THT) AOI: Pre-Wave and Post-Wave Inspection GuideThrough-hole AOI checks insertion and polarity before the wave and solder joints after it. This guide covers THT defects, why manual inspection misses them, and how a straddle-mount AOI fits an existing wave line.
- How to Evaluate an AI AOI System Before You BuyVendor accuracy numbers mean nothing until you reproduce them on your own boards. Six boards to bring, five things to measure, and what a passing result looks like.
- AOI Programming Without CAD Files: How It Actually WorksNo CAD files, no component library — how golden-board AI programming actually works step by step, and how it compares to the traditional 3–5 hour AOI workflow.
- How to Reduce AOI False Calls: Root Causes & FixesWhich AOI false calls you can tune away, which ones live below the threshold layer, and how to tell the difference before you buy another round of tuning hours.
- Best AOI for High-Mix, Low-Volume PCB Assembly (2026)Which AOI fits high-mix, low-volume PCB assembly? A sourced comparison of programming input, 2D or 3D, form factor and setup time, plus how to test vendor claims on your own boards.
- How to Choose an AOI for High-Mix PCB AssemblySpecs are the entry ticket. The real differences on a high-mix floor: programming inputs, changeover time, and false-call burden. Seven questions expose them.
Frequently asked questions
Does the A3 need CAD data to program?
No. Like every DaoAI machine, the A3 programs itself from one golden board in 30 seconds to 5 minutes. No CAD, Gerber, centroid file or component library is required, and the AI runs on-premise on the machine.
Send us a board and we will tell you which machine it needs.
Half an hour with one of our engineers. Board size, mix and cycle time decide this, not a brochure.