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SMT Assembly
SMT Assembly Services, Surface-Mount PCB Assembly, Proto to Production
Factory-direct surface-mount assembly across 8 SMT lines and 9 million placements per day, from a single 0201 passive to a 1,000-ball BGA, built to IPC-A-610 Class 2/3 and verified with in-house AOI, 3D X-ray, ICT and functional test.
ISO 9001:2015
IPC-A-610 Class 2/3
J-STD-001
16+ years
8 SMT lines
9M placements/day
8
SMT lines
9M/day
Placements
0201–BGA
Component range
680×550mm
Max board
Class 2/3
IPC-A-610
1–15 days
Turn time
PCBark SMT Assembly Capabilities: The 9-Million-Placement Capacity Ladder
Capacity is the spec the rest of the SERP hides, capability lists rarely state a daily placement number, so a buyer can’t tell whether a ramp will fit. Here it’s, unhidden: 8 surface-mount lines, 9 million placements per day, a 0.15-second chip cycle, and a component window from a 0201 passive up to fine-pitch BGA, QFP, CSP and long connectors. Placement registration for that fine-pitch work is the kind of problem recent tooling patents target with topography-matched chucks. (WIPO WO2023056072A1, 2023)
| Capability | PCBark spec |
|---|---|
| SMT lines | 8 lines |
| Placement capacity | 9,000,000 placements / day |
| Placement speed | 0.15 sec/chip, 0.7 sec/QFP |
| Component range | 0201 / 01005-class · CSP · BGA / µBGA · QFP / QFN / PLCC · long connector |
| Max board size | 680 × 550 mm (smallest 0.25 × 0.25 in) |
| Sided | Single- and double-sided SMT + mixed SMT/through-hole |
| Wave / selective solder | Max PCB width 450 mm; component height top 120 mm / bottom 15 mm |
| Press-fit | 0–50 kN, max board 800 × 600 mm |
| Solder & paste | Leaded and lead-free; water-soluble paste |
| File formats | BOM, Gerber, Pick-and-Place (XYRS) |
Honest Capacity & BOM Integrity
A capacity ladder only matters if the small end is honest. A common buyer pain is that unapproved component substitution ships non-compliant parts the buyer never approved, forcing a production stop. PCBark holds the BOM you signed off, turnkey, partial-turnkey, or consignment, and surfaces any substitution as a documented engineering query, not a silent swap.
PCBark SMT assembly floor with multiple surface-mount lines and real-time line monitoring
PCBark SMT assembly floor, multiple surface-mount lines under real-time line monitoring.
Quality & Full Test Stack
The most expensive assumption a buyer makes is that an X-ray machine means the board is verified. It doesn’t. Hidden BGA joints can’t be visually inspected after reflow, X-ray proves a ball is physically connected, but it can’t tell you the joint is electrically or structurally sound, and AOI alone never sees under the package at all. That’s why our stack pairs imaging with electrical test: AOI and 3D X-ray for structural and hidden-joint defects, then ICT, flying probe, burn-in and functional test for the rest. Dedicated X-ray inspection of hidden solder joints is now its own patented discipline. (EPO EP4134883B1)
Workmanship is held to a stated class, not a slogan. IPC-A-610 and its companion process standard J-STD-001 tighten measurably from Class 2 to Class 3, and the difference is where harsh-environment reliability lives.
“We treat AOI and X-ray as different questions, not redundant ones. AOI catches the visible defect rate on every joint at line speed; the 3D X-ray exists for the joints you physically cannot see. A board that passes one but not the other never ships as good.”
Acceptance Criterion Matrix
| Parameter | Class 2 (Industrial) | Class 3 (Hi-Rel) |
|---|---|---|
| Side overhang, max | ≤50% of lead width | ≤25% of lead width |
| Toe width, min | ≥50% of lead width | ≥75% of lead width |
| Side fillet | ~75% | ~100% |
| BGA voiding | Wider allowance | ≤9–25% tightly held |
| Typical application | Instrumentation | Aerospace, Medical, Auto |
System Certifications
ISO 9001:2015
Quality Sys
ISO 14001
Environmental
IPC-A-610 Cl 3
Acceptance
J-STD-001
Soldering
UL · RoHS
Compliance
REACH
Substance
This is where a supplier earns trust: buyers screen on a certified quality system, a stated IPC class, and inspection coverage matched to board complexity. The standards reference for class definitions is published by IPC itself.
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![Zoomed Certification]()
SMT Assembly Costs & Lead Times: The 5-Lever SMT Cost Model
A language barrier turn drawings into defects, and a headline turn time hides the real delivery date, the two cost surprises buyers report most. PCBark answers both with transparency instead of a single magic number, because an SMT assembly quote is driven by five levers, and the landed cost from China carries adders that an ex-works price never shows. Modeling that honestly is the core 2026 sourcing decision: relocating assembly alone doesn’t guarantee duty relief.
Factory-Direct vs US-EMS vs Broker, landed-cost crosswalk
The honest comparison isn’t unit price; it’s total landed cost. China-origin PCBs and PCBAs carry a 25% additional Section 301 tariff on top of the (often free) base duty unless a valid exclusion applies. (USTR, Section 301) The $800 de-minimis exemption has also been suspended, so even prototype shipments now need formal entry. (Executive Order 14324)
+45%
One buyer’s real China-to-US PCBA order ran about 45% over the ex-works quote once shipping, taxes and tariffs were added. Compare landed cost, not unit price.
Industry/buyer-reported figure; 178 Section 301 exclusions run to Nov 10, 2026, and duty drawback can recover up to 99% of eligible duties on re-exported goods.
The five cost levers
01
BOM & placements
Unique line items and total placements drive machine time and sourcing labor
02
NRE & tooling
Stencil and program are one-time; they dominate small runs
03
Density & class
Fine-pitch/BGA and IPC Class 3 add stencil precision, X-ray and inspection labor
04
Volume & turn
Setup spreads over units; quick-turn carries a rush premium
05
Landed-cost adders
Section 301 tariff + freight + customs/broker on top of ex-works
Choosing a partner on unit price alone understates true total cost of ownership by roughly 20–30% once capital, logistics, duties and risk are counted, which is why a factory-direct EMS with in-house test depth usually beats both a broker (who marks up and controls nothing) and a domestic shop quoting 4–5× the unit price. To start a quote we need only your BOM, Gerber and Pick-and-Place files; pricing for your smt assembly service follows from the five levers above. Request a landed-cost estimate and we’ll model it against your volume and destination.
SMT Assembly Planning & Evaluation Tools
SMT Landed-Cost Crosswalk
Compare the landed cost of a China-direct SMT build — not the headline unit price. Section 301 tariff, freight and broker fees included.
Evaluate CostsSMT vs Through-Hole Selector
Five questions map your board onto the right assembly technology. Most real designs are mixed — this tells you where the balance sits.
Select TechnologySMT Complexity & Lead-Time Estimator
A quick read on where your build sits on the complexity scale and which lever drives its lead time. Not a quote — a planning aid.
Estimate Lead TimeGet an SMT Assembly Quote
Send your BOM, Gerber and Pick-and-Place files. PCBark will run DFM, model your landed cost, and quote 0201-to-BGA surface-mount assembly built to your IPC class.
Get an SMT Assembly Quote
