Advanced SMT Assembly

Four placement lines, fine-pitch BGA capability, and per-board traceability — built into nine decades of Pioneer Group manufacturing discipline.

  • Surface Mount Technology
  • Through-Hole Assembly
  • BGA & Fine Pitch Assembly
  • AOI Inspection
  • Functional Testing
Structured Manufacturing Workflow

From Gerbers to packed pallet, six audited gates.

Design → DFM → SMT → Inspection → Testing → Delivery. Every transition is documented and signed off — and every board carries a serial linking back to the materials and operators behind it.

1

Design

DFM walkthrough on your Gerbers, panelisation plan, and component verification against our incoming-inspection records.

2

DFM

Stencil aperture design, paste-volume targets, and reflow profile derived from the dominant package on the board.

3

SMT

Print → place → reflow on the dedicated line for your build. AOI between print and place if your design needs it.

4

Inspection

AOI top + bottom on every board, X-ray on BGA/QFN voids, IPC-A-610 visual sign-off by trained operators.

5

Testing

ICT or flying probe per quantity tier; functional test against your firmware; burn-in for boards destined for harsh environments.

6

Delivery

ESD-safe pack, moisture-barrier bagging for export, traceability pack and FAI report ship with the lot.

Capability detail

Six practices that decide whether your yield holds at production.

Each capability is a discipline the line runs to its own thresholds — with specific tolerances you can hand to your customer's audit team.

01

Surface Mount Technology

Four high-speed placement lines at our Madurai facility running 0201 components and beyond at production cadence — with stencil paste verification on every print.

Smallest passive01005 / 0201
Placement speed80,000 CPH peak
Lines4 × independently configurable
02

Through-Hole Assembly

Selective wave soldering for mixed-tech boards. We run THT on the same panel as fine-pitch SMT without cooking the small parts — pin-count economics decide hand-solder vs selective.

ProcessSelective wave + hand solder
Lead-freeSAC305 / SAC0307
Connector capabilityPress-fit + odd-form
03

BGA & Fine Pitch Assembly

BGA, QFN, and µBGA placement with X-ray void verification on every package. Void rates under 8% on power BGAs; rework profiles available for eight common package sizes.

BGA pitch0.4 mm and above
QFNDown to 0.4 mm pitch
Void target< 8% (power BGA)
04

AOI Inspection

100% AOI top and bottom on every board, tuned per design to keep false-fail rate low without missing real defects. X-ray for BGA voids and joint integrity on safety-critical builds.

Coverage100% top + bottom
InspectionAOI + X-ray + ICT
StandardIPC-A-610 Class 2 / 3
05

Functional Testing

ICT fixtures for high-volume programmes, flying probe for low-volume, and functional test against your firmware. We build the test plan with your team, not after.

MethodsICT · Flying probe · FCT
Boundary scanJTAG / IEEE 1149.1
Test coverageTarget ≥ 95% nets
06

Process Control & Traceability

Every board carries a serial that links solder-paste batch, reel lot, profile run, and operator — auditable end to end. ESD-controlled floor aligned to ANSI/ESD S20.20.

TraceabilityMES, per-board serial
ESDANSI/ESD S20.20
Records retained7 years (Class 3)
Line specifications

What we routinely run, not the ceiling.

These are the SMT-line capabilities we'll quote against without further qualification. Tighter targets are possible — ask and we'll let you know what changes.

SpecificationValue
Smallest passive01005 / 0201
BGA / QFN pitch0.4 mm minimum
Placement speedUp to 80,000 CPH peak
Board size range50 × 50 mm to 460 × 410 mm
Board thickness0.4 – 4.5 mm
Component heightUp to 25 mm
SolderPb-free SAC305 / SAC0307 · leaded on request
Inspection100% AOI + X-ray (BGA) + ICT / FCT
StandardsIPC-A-610 Class 2 / Class 3
Production tierPrototype (5–50) · pilot · mass production (10k+)
Equipment on the floor

The machines that do the work.

A representative slice of the placement, print, reflow, inspection, and test equipment that runs the Madurai SMT floor — updated as we add capacity.

Yamaha YSM20R PlacementPanasonic NPM-W2 PlacementDEK Horizon iX PrinterHeller 1936 MK5 ReflowErsa VERSAFLOW Selective WaveKoh Young aSPIre 3 SPIKoh Young Zenith AOINordson DAGE X-rayGenRad ICTSPEA 4060 Flying Probe
Process notes

Read what our SMT engineers actually write about.

Selected articles from the SMT Assembly corpus — BGA voiding, reflow profiles, paste storage, AOI tuning, and the calls we make at production speed.

Browse all SMT Assembly articles
Let's get to work

Got Gerbers and a BOM? Send them over.

Two working days for a manufacturability review, a lead-time, and a unit-price tier — with the assumption that the answer ends in your design hitting our line, not coming back as a revision.

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