Mixed Technology Assembly | SMT + Through-Hole on One Board

SMT and Through-Hole on the Same Board

Most real-world products mix fine-pitch SMD components with through-hole connectors, power devices or large electrolytic capacitors. Our mixed technology lines handle both processes in one flow, with the right soldering method for each joint.

Process Options

Single-side mix: SMT reflow first, then wave or selective soldering for THT parts.
Double-side mix: A-side reflow, B-side reflow, then THT soldering with pallet protection.
Selective soldering for boards that cannot pass over a wave (tall parts, dense bottoms).
Hand soldering for connectors and odd-form components with temperature profiles.

DFM Points We Check

Wave-solder shadowing and pallet clearances on the bottom side.
Component spacing between SMD pads and THT holes to avoid re-melting.
Thermal relief design on ground planes for reliable hole filling.

Mixed technology builds are quoted per process step - upload your files and we return a clear cost breakdown. Related: SMT Assembly, THT Assembly.

PCB Assembly Capabilities

Item	Specification	Notes
Max Panel Size	480mm x 420mm	Maximum PCB panel dimensions for assembly
Min Track / Spacing	3mil / 3mil
Min BGA Pitch	0.25mm
Smallest Component	01005
Placement Accuracy	+/-25 um
Solder Paste Inspection	100% 3D SPI	Inline after printing
Soldering Process	Lead-free reflow & wave	Nitrogen optional
Component Types	BGA / QFN / LGA / 0201 / Connectors
Daily SMT Capacity	12,000,000 points
Inspection	100% AOI + X-Ray for BGA	IPC-6012 Class 2/3

Industries We Serve

Automotive Industry

Industrial Control and Automation

Medical Device and Health Industry

Telecom and Networking Equipment

Consumer Electronics

Agricultural PCBA

Security

LED Lights

Power Supply

Robot

Motor & Drive

Energy Storage & BMS

Related Resources

DFM Basics: 8 Common PCB Design Issues and How to Avoid Them Eight of the most common PCB design issues found during DFM review, and practical guidance on how to avoid them in your next layout. Quick-Turn PCB Prototyping: 5 Ways to Shorten Your Lead Time Five practical ways to shorten PCB prototype lead time, from file preparation to logistics planning, based on years of quick-turn manufacturing experience. How to Choose PCB Surface Finish: HASL vs ENIG vs OSP A practical comparison of HASL, ENIG and OSP surface finishes covering cost, solderability, shelf life and best-fit applications.

Frequently Asked Questions

Are Your PCBs RoHS-Compliant?

The PCBs we manufactured comply with the essential requirements and other relevant provisions of the RoHs 3/REACH. However, we also offer leaded PCBs as per customers’ request.

How Do I Get a PCB/PCBA Quote?

PCB Orders For a free PCB quote, we would need you to provide the following details: Order quantity Gerber file Technical characteristics (material, surface finish treatment, copper thickness, and board thickness) PCBA Orders For a free PCBA quote, we need: PCB details as above BOM Testing documents

What Are Your Incoterms?

Our standard Incoterms are: Free on Board (FOB) Cost, Insurance, and Freight (CIF) Ex Works (EXW) Delivered at place (DAP)

How do you ship out my orders?

For PCB prototypes, we always deliver the goods by DHL,Fedex,UPS…But if the shipping weight is huge, we can ship out by Sea, by Train, by Plane. If you would like to get a free quote on your estimated shipping time and delivery costs, please contact us

What is the typical lead time for product delivery?

Bare PCB Prototype Quick Turn Layer 2 in 24 hours Layer 4 in 48 hours Layer 6-8 in 72 hours