X-Ray BGA & QFN Void Analysis for High-Reliability PCBA

Voids trapped under BGAs, QFNs and connectors are invisible to AOI and eye inspection. An SMT X-ray inspection system reveals them before boards ship.

What is this used for?

The X-ray source penetrates the component and captures internal images of the solder joint.

• BGA/QFN void detection and area measurement; connector, shield-covered and press-fit joint review
• First-article audit, process change validation, failure analysis
• Sampling audits for automotive, medical, power and industrial PCBA

Verified specifications

| Parameter | Value |

|---|---|

| Dimensions | 1220 x 1030 x 1700 mm |

| Weight | 850 kg |

| Power | Single phase AC 110-220V, 50/60 Hz |

| Magnification | 120x geometric / 1000x system |

| Image area | 460 x 360 mm |

| Sample weight | Under 5 kg |

| Radiation safety | Leakage <= 0.5 uSv/h |

From the product page; confirm at quotation.

Why void control matters

Voids reduce the load-bearing cross-section of a BGA ball and concentrate stress under thermal cycling; on power, automotive and medical boards the risk is field failure. X-ray reveals void percentage and position so engineers can correct reflow profiles, stencil design or paste quality early.

How it fits the inspection workflow

1. Board exits reflow or wave soldering.
2. AOI checks visible solder joints and placement.
3. X-ray audits hidden joints: BGA/QFN voids, bridges, insufficient joints.
4. Review against acceptance criteria, then release to test.

ROI perspective

Catching hidden-joint defects before test or field use cuts rework, returns and warranty claims. ROI is case by case.

About Southern Machinery

Founded in 2011 in Shenzhen, Southern Machinery serves 237+ global EMS, ODM, automotive, and medical electronics customers across SMT placement, THT insertion, wave soldering, board handling, cleaning, and inspection.

FAQ

Can it measure void percentage? The software images internal joint structure; operators review voids against their acceptance criteria. Confirm measurement features at quotation.

How often should we run X-ray audits? Typical practice: first-article, after reflow profile or stencil changes, new supplier lots, and periodic sampling.

Is this the AX6000 X-ray component counter? No. AX6000/ADL100 count SMD reels; this system images assembled boards for hidden-joint inspection.

Does X-ray replace AOI? No. AOI inspects visible surfaces at line speed; X-ray inspects hidden and internal joints. Most lines use both.

Is it safe to operate? Leakage is <= 0.5 uSv/h; follow local radiation rules and operator training.

Next steps

Contact: jasonwu@smthelp.com | WhatsApp: +86 13602562576

Catalog: https://file.autoinsertion.com | Images: https://ph.smthelp.com

Product page: https://www.smthelp.com/x-ray-inspection-system-detector-for-smt.html

Published by Southern Machinery - SMT/THT PCB Assembly Automation. Established 2011 in Shenzhen.