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MIXED PCB ASSEMBLY

Combine SMT density with through-hole strength.

ANZ Electric coordinates surface-mount and through-hole processes on one board, matching automated precision with the mechanical and electrical requirements of larger components.

SMTdensity and repeatabilityTHTmechanical connectionOne routecoordinated inspection
Mixed PCB assembly production
TWO TECHNOLOGIES · ONE BUILDThe value is in coordinating the sequence, not simply using both methods.

WHY MIXED ASSEMBLY

Use each component technology where it performs best.

SMT supports compact, high-density circuitry. Through-hole supports connectors, terminals, high-power devices and components exposed to mechanical load.

SMT

Compact and repeatable

Automated placement supports dense layouts, small packages and efficient board use.

THT

Robust and serviceable

Leaded components provide strong mechanical retention for interfaces and larger devices.

MIX

Integrated by design

A coordinated sequence protects existing joints and maintains access for later soldering and inspection.

COMPONENT MIX

Support compact circuitry and demanding interfaces on the same assembly.

The production route is selected around component form, thermal sensitivity, mechanical load and inspection accessibility.

Chip passivesICs and controllersBGA / QFNPower devicesConnectorsTerminalsTransformersMechanical hardware

MIXED ASSEMBLY ROUTE

Sequence SMT and THT without compromising either process.

DFA review defines component spacing, soldering access, thermal constraints and the correct order of operations.

01 / REVIEW

DFA alignment

Spacing, access and process order.

02 / SMT

Print and place

Paste, automated placement and checks.

03 / REFLOW

Form SMT joints

Controlled thermal profile.

04 / THT

Insert and solder

Manual, selective or wave route.

05 / VERIFY

Inspect and test

Evidence across both technologies.

PROCESS CHOICES

Match the through-hole route to the component mix.

Not every mixed board should follow the same soldering method.

01

Manual soldering

Suitable for limited quantities of accessible connectors or specialist components.

02

Selective soldering

Applies solder to defined through-hole areas while protecting nearby SMT content.

03

Wave soldering

Can support boards with a larger proportion of compatible through-hole components.

04

Product-specific combination

Multiple methods may be coordinated when board geometry or component sensitivity requires it.

PREPARE YOUR MIXED ASSEMBLY REVIEW

Make the complete component and process picture visible.

Clear assembly drawings and special-process notes are particularly important when multiple soldering methods share one board.

01

PCB data

Gerber or ODB++, drill files and stack-up.

02

BOM and component details

Packages, lead types, approved alternates and special handling.

03

Assembly drawings

Side, polarity, insertion and mechanical requirements.

04

Inspection and test scope

Acceptance criteria, test access and functional requirements.

START YOUR MIXED ASSEMBLY REVIEW

Coordinate SMT and through-hole as one manufacturing system.

Share your production package and component mix for an engineering and process review.

Request a mixed assembly quote