Through-Hole PCB Assembly Services
Reliable Through-Hole Assembly for High-Power, Mechanically Demanding, and High-Reliability Electronic Products
3000㎡+
30+
ISO 9001
24 Hours
Professional Through-Hole
Assembly Services
VoltCircuits provides precision through-hole PCB assembly for products requiring strong mechanical connections, durability, and reliable long-term performance. From prototype builds to mass production, our experienced assembly team applies controlled soldering processes to deliver consistent manufacturing quality.
Strong Mechanical Connections
Through-hole component leads pass through the PCB, providing secure mechanical attachment for demanding applications.
Controlled Soldering Processes
Controlled soldering processes help achieve consistent and reliable through-hole connections.
Prototype to Mass Production
Support through-hole assembly requirements from prototype builds and low-volume production to larger production runs.
Why Choose Through-Hole Assembly?
Through-hole assembly provides strong mechanical connections and reliable component attachment, making it well suited for high-power, mechanically demanding, and long-service electronic applications.
Strong
Mechanical Connections
Through-hole component leads pass through the PCB, providing secure mechanical anchoring for components subject to mechanical stress.
Reliable Component Attachment
Through-hole construction provides robust soldered connections for applications requiring dependable component mounting.
Suitable for High-Power Electronics
Through-hole components are commonly used for larger components, connectors, and applications involving higher electrical or mechanical demands.
Suitable for Demanding Environments
The robust mechanical connection can be advantageous in applications exposed to vibration, mechanical stress, or other demanding operating conditions.
Supports Long-Service Applications
Through-hole assembly can be appropriate for products designed for extended operating periods where durable component attachment is important.
Easier
Component Replacement
Certain through-hole components can be easier to access and replace during repair or maintenance, depending on the PCB design.
Our Through-Hole Assembly Services
VoltCircuits provides flexible through-hole assembly options for prototypes, low-volume production, mass production, and projects requiring mixed-technology or turnkey manufacturing support.
Prototype Through-Hole Assembly
Through-hole assembly for prototypes, engineering validation, and early-stage product development.
Low-Volume Through-Hole Production
Flexible production for smaller quantities, product launches, and market testing.
Mass Production Through-Hole Assembly
Scalable through-hole assembly for established products and recurring production requirements.
Mixed Technology Assembly
Combines through-hole and SMT components when the PCB design requires both assembly technologies.
Lead-Free Assembly
Lead-free through-hole soldering for products requiring lead-free manufacturing processes.
Consigned Assembly
Through-hole assembly using customer-supplied components according to the approved BOM and production requirements.
Turnkey Through-Hole Assembly
Integrated PCB fabrication, component sourcing, through-hole assembly, inspection, and testing through one manufacturing partner.
Through-Hole Assembly Capabilities
VoltCircuits supports manual and automated through-hole component insertion, wave and selective soldering, and mixed-technology assembly for PCBs with demanding component and assembly requirements.
Manual Component Insertion
Manual insertion for through-hole components that require operator handling or are not suitable for automated insertion.
Automated Component Insertion
Automated insertion for compatible through-hole components to improve production consistency and efficiency.
Wave Soldering
Controlled wave soldering for efficient soldering of through-hole components across suitable PCB assemblies.
Selective Soldering
Targeted soldering of selected through-hole connections while protecting surrounding SMT components.
Hand Soldering
Precision manual soldering for specific components, rework, prototypes, and assemblies requiring manual processing.
Mixed SMT & Through-Hole Assembly
Combines surface-mount and through-hole components on the same PCB when required by the design.
Large PCB Assembly
Assembly support for larger PCB formats and assemblies requiring appropriate handling and production processes.
Heavy Component Installation
Installation of larger or heavier through-hole components requiring secure mechanical mounting and solder connections.
Supported Components for
Through-Hole Assembly
VoltCircuits supports through-hole assembly for connectors, power components, electromechanical devices, and larger components that benefit from secure mechanical mounting and robust solder connections.
CONNECTION & INTERFACE
Connectors
Through-hole connectors for board-to-board, wire-to-board, and external electrical interfaces.
Transformers
Through-hole transformers for power conversion, isolation, and signal applications.
Relays
Through-hole relays for switching and control applications.
Terminal Blocks
Through-hole terminal blocks for secure wire and cable connections.
POWER & ELECTROMAGNETIC
Large Capacitors
Larger through-hole capacitors used for power supply, filtering, and energy-storage applications.
Power Resistors
Through-hole power resistors designed to handle higher power dissipation requirements.
Heat Sinks
Through-hole or mechanically mounted heat-sink components used for thermal management.
Coils & Inductors
Through-hole coils and inductors used for filtering, energy storage, and electromagnetic applications.
SPECIALIZED & MECHANICAL
Switches
Through-hole switches for user controls, power switching, and electronic interfaces.
Mechanical Components
Through-hole-compatible mechanical components that require secure PCB mounting.
Industrial Connectors
Robust through-hole connectors for industrial equipment and demanding electrical interfaces.
High-Power Components
Larger through-hole power components where mechanical stability, thermal management, or electrical requirements favor through-hole mounting.
Our Through-Hole Assembly Process
Our through-hole assembly process combines engineering review, component preparation, precision insertion, controlled soldering, inspection, and testing to deliver reliable PCB assemblies.
ENGINEERING
Engineering Review
Review PCB files, assembly requirements, and production specifications.
Step 01
DFM & BOM Verification
Review manufacturability and verify BOM information before production.
Step 02
PREPARATION & INSERTION
Component Preparation
Prepare and organize through-hole components according to the approved BOM and assembly requirements.
Step 03
PCB Preparation
Prepare PCBs and production materials for through-hole component insertion and soldering.
Step 04
Component Insertion
Insert through-hole components manually or using suitable automated equipment.
Step 05
TEST & DELIVERY
Wave, Selective & Manual Soldering
Apply the appropriate soldering method according to the PCB design and component requirements.
Step 06
AOI & Visual Inspection
Inspect component placement, solder connections, and visible assembly quality.
Step 07
Functional Testing
Verify assembled PCBs according to the project’s functional testing requirements.
Step 08
TEST & DELIVERY
Functional Testing
Verify assembled PCBs according to the project’s functional testing requirements.
Step 08
Final Inspection
Complete final quality verification before packaging.
Step 09
Packaging & Worldwide Shipping
Package finished assemblies securely for shipment to customers worldwide.
Step 10
Through-Hole Soldering Capabilities
VoltCircuits supports wave, selective, and precision hand soldering for through-hole assemblies, with lead-free processing and controlled rework when required.
Wave Soldering
Efficient soldering for suitable through-hole assemblies using controlled wave-soldering processes.
Selective Soldering
Targeted soldering of individual through-hole connections while protecting surrounding components and SMT areas.
Precision Hand Soldering
Manual soldering for prototypes, specific components, complex areas, and assemblies requiring operator-controlled soldering.
Lead-Free Soldering
Lead-free soldering processes for projects requiring lead-free manufacturing.
Controlled Soldering Quality
Controlled soldering processes and inspection help maintain consistent solder connections and assembly quality.
Rework & Repair Support
Support for qualified rework, solder correction, and repair requirements when required by the project.
Quality Control for Through-Hole Assembly
VoltCircuits applies inspection and testing throughout the through-hole assembly process to verify component placement, solder quality, assembly workmanship, and final product performance.
Visual Inspection
Check component placement, solder joints, polarity, workmanship, and visible assembly conditions.
First Article Inspection (FAI)
Inspect the first assembled units to verify assembly requirements before continuing production.
AOI Inspection
Use automated optical inspection where applicable to identify visible assembly and soldering defects.
X-Ray Inspection When Required
Use X-Ray inspection when required for components or solder connections that cannot be adequately verified through visual or optical inspection.
Functional Testing
Test assembled PCBs according to the customer’s specified functional requirements.
Final Quality Inspection
Complete final inspection before packaging and shipment.
Production Traceability
Maintain production and material information to support project traceability and quality control.
--- Quality Control for Through-Hole Assembly ---
Supporting quality-control systemSupporting quality-control system
Component Sourcing for Through-Hole Assembly
VoltCircuits supports component sourcing and BOM management for through-hole assembly projects, helping customers manage component availability, alternatives, and production requirements.
End-to-End Supply Chain Support
From component sourcing and BOM management to purchasing and production supply, VoltCircuits supports your complete component supply chain.
BOM Verification
Review BOM information, part numbers, specifications, and quantities before procurement.
Alternative Component Support
Identify potential alternative components when the original part is unavailable or supply conditions change, subject to customer approval.
Long-Term Component Supply
Support ongoing component procurement for recurring production and longer-term manufacturing requirements.
Inventory Planning
Coordinate component requirements and purchasing plans according to production schedules and project needs.
Turnkey Procurement
Integrate component sourcing with PCB assembly to provide a more complete manufacturing solution.
Quality Control for Through-Hole Assembly
VoltCircuits applies inspection and testing throughout the through-hole assembly process to verify component placement, solder quality, assembly workmanship, and final product performance.
End-to-End Supply Chain Support
From component sourcing and BOM management to purchasing and production supply, VoltCircuits supports your complete component supply chain.
End-to-End Supply Chain Support
From component sourcing and BOM management to purchasing and production supply, VoltCircuits supports your complete component supply chain.
End-to-End Supply Chain Support
From component sourcing and BOM management to purchasing and production supply, VoltCircuits supports your complete component supply chain.
End-to-End Supply Chain Support
From component sourcing and BOM management to purchasing and production supply, VoltCircuits supports your complete component supply chain.
End-to-End Supply Chain Support
From component sourcing and BOM management to purchasing and production supply, VoltCircuits supports your complete component supply chain.
End-to-End Supply Chain Support
From component sourcing and BOM management to purchasing and production supply, VoltCircuits supports your complete component supply chain.
End-to-End Supply Chain Support
From component sourcing and BOM management to purchasing and production supply, VoltCircuits supports your complete component supply chain.
End-to-End Supply Chain Support
From component sourcing and BOM management to purchasing and production supply, VoltCircuits supports your complete component supply chain.
Industries We Serve
Our through-hole assembly capabilities support electronic products where robust component connections, durability, and reliable assembly are important.
Industrial Electronics
Through-hole assembly for industrial controls, automation equipment, power systems, and electronic equipment.
Automotive Electronics
Assembly support for automotive electronic systems and control applications requiring robust component connections.
Medical Devices
Through-hole assembly support for electronic products and equipment where reliable component mounting is important.
Power Electronics
Through-hole assembly for power-related applications using larger components, connectors, and power devices.
Telecommunications
Assembly support for communication and networking equipment using through-hole and mixed-technology components.
Consumer & Specialized Electronics
Through-hole assembly support for electronic products requiring larger components, connectors, switches, or mechanically robust PCB connections.
Related Capabilities
Explore VoltCircuits’ core PCB assembly, inspection, and testing capabilities in more detail.
SMT Assembly
Precision surface mount assembly for reliable and repeatable PCB production.
Through-Hole Assembly
Through-hole component assembly for applications requiring secure mechanical connections.
BGA Assembly
Precision BGA assembly for high-density PCB designs.
SMT Assembly
Precision surface mount assembly for reliable and repeatable PCB production.
Through-Hole Assembly
Through-hole component assembly for applications requiring secure mechanical connections.
BGA Assembly
Precision BGA assembly for high-density PCB designs.
Frequently Asked Questions About Through-Hole Assembly
Find answers to common questions about through-hole assembly applications, mixed-technology production, soldering, component requirements, production quantities, and quotation requirements.
What is Through-Hole Assembly?
Through-hole assembly is a PCB assembly method in which component leads pass through drilled holes in the PCB and are soldered to form secure electrical and mechanical connections.
When should Through-Hole Assembly be used?
Through-hole assembly is often suitable for components that require strong mechanical attachment, larger components, connectors, power-related components, or applications exposed to mechanical stress.
Can VoltCircuits combine SMT and Through-Hole Assembly?
Yes. VoltCircuits supports mixed-technology assembly, combining SMT and through-hole components on the same PCB when required by the design.
Do you support lead-free soldering?
Yes. Lead-free through-hole soldering is available for projects requiring lead-free manufacturing processes.
Can you assemble large or heavy components?
Yes, subject to the component, PCB design, mounting requirements, and available production process. Through-hole assembly is particularly suitable for many larger components requiring secure mechanical attachment.
What is your production capacity?
Production capacity depends on the PCB design, component requirements, order quantity, and production schedule. VoltCircuits supports prototype, low-volume, and larger-scale production.
Can you support prototype and mass production?
Yes. VoltCircuits supports projects from prototype and low-volume production through larger-scale manufacturing.
What files are required for a quotation?
Typically, VoltCircuits reviews the Gerber files, BOM, required quantity, and project requirements to prepare a quotation. Additional information may be requested during engineering review.
Need Reliable Through-Hole PCB Assembly?
VoltCircuits provides reliable through-hole assembly with experienced assembly teams, controlled soldering processes, engineering support, and quality control for customers worldwide.