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THT PCB Assembly

Delivering Precision and Excellence in THT PCB Assembly Solutions

Why Work with Us for SMT Assembly?

Tht Assembly

THT PCB Assembly

THT PCB Assembly, also known as Through-Hole Technology PCB Assembly, is a specialized service offered by Bester. Through-Hole Technology involves the insertion of electronic components into pre-drilled holes on a printed circuit board (PCB) and soldering them in place on the opposite side. This method ensures a reliable connection between the components and the PCB, making it suitable for applications that require robust and durable circuitry. At Bester, we have a team of skilled technicians and advanced equipment to provide efficient THT PCB Assembly services. With our expertise, we can handle projects of various complexities and deliver high-quality assemblies that meet the specific requirements of our customers. Whether it’s for prototyping or large-scale production, our THT PCB Assembly service is tailored to meet the needs of various industries, including automotive, aerospace, medical, and telecommunications, among others.

PCB Assembly Process

One of the most important factors in the overall efficiency of each PCB assembly project is the client’s understanding of our process. The number of steps involved in the PCB assembly process depends upon the specific nature of the project in question, as illustrated below, and each of these steps is explained briefly in the following sections.

DFM Check

DFM checks our client’s PCB design and looks for issues that may influence the final product negatively, such including missing, redundant or potentially problematic features. And the consistency across different design documents like BoM and Gerbers.


Inspect all incoming materials and handle quality problems before the SMT assembly process. Bester IQC and procurement team will check for model numbers, shape, sample test, etc to ensure all parts used are of the highest quality.

Solder Paste Printing

Solder paste printing is the actual first step in PCB assembly manufacturing process that can apply solder paste to the appropriate, necessary areas on the PCB using stencil and squeegees.

SMD Components assembly

Pick and Place SMD components to the programmed location at high speed using automated Pick&Place machines after solder paste is correctly applied to bare PCBs.

Reflow Soldering

After SMD components are placed on the boards, they are sent through reflow machines to have the solder paste to reflow, attach components and create permanent solder joints.

THT Components Assembly

Pick and Place THT components to the programmed location at high speed using automated Pick&Place machines for the wave soldering process.

wave soldering

Wave soldering is a method of PCB Assembly that involves sending boards on a conveyor through a wave of molten solder that is used to attach through-hole components to the boards.

AOI & X-ray

Inspect and verify that no mistakes have been made and that all parts have been correctly placed using automated optical inspection(AOI) and X-Ray technology and machines.

Final inspection & repairing

The final inspections include visual inspection by our quality assurance team and post AOI inspection for flaws and functions. It’s also known as functional test.

QC / packaging

All assembled boards are packaged per clients’ request in anti-static packaging and be prepared for shipping under our QC team.

PCBA Capabilities

Types of Assembly
THD (Thru-Hole Device)
SMT (Surface-Mount Technology)
SMT & THD mixed
2 sided SMT and THD assembly
Types of PCB
Rigid, Flexible, Rigid-Flex PCBs, MC PCBs, Ceramic PCBs, Rogers PCBs
Board Dimensions
Smallest size: 0.2″ x 0.2″
Largest size: 15″ x 20″White, Yellow, Black (Inquire for more options)
Board Shape
Slots and Cut outs
Complex and Irregular
Board Type
Rigid FR-4
Rigid-Flex boards
Design File Format
Gerber RS-274X
BOM (Bill of Materials) (.xls, .csv, . xlsx)
Centroid (Pick-N-Place/XY file)
Assembly Process
Leaded process
Lead-Free (RoHS)
Passives parts, smallest size 0201
Fine pitch to 8 Mils
BGA, uBGA, QFN,POP and Leadless chips
Connectors and terminals
Component Package
Cut tape
Tube and tray
Loose parts and bulk
Parts Procurement
Full Turnkey, Partial Turnkey, Consigned/kitted
Component Size
Smallest Components, Micro BGA, Fine Pitch Parts Assembly
Nano-coating, Laser-cut stainless steel
Reflow Soldering, Wave Soldering
Testing Method
AOI (Automated Optical Inspection)
Visual inspection
X-Ray Inspection
Flying Probe testing
ICT Testing
Functional Testing
Repair & Rework
Ball Grid Array replacement, IR rework
Turnaround Time
1-5 days for only PCB assembly
10-16 days for turnkey PCB assembly
Production Capacity
4 SMT lines, 2 DIP Production Lines, 20 Automatic Robotic Soldering Lines

Why Choose Bester

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Strong Assembly Capacities

With state-of-the-art facilities and a highly skilled team, we have the capacity to handle even the most complex PCB assembly projects, ensuring your products are manufactured efficiently and accurately.

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Quality Assurance

Our rigorous quality control processes and extensive testing procedures guarantee that every PCB assembly we produce meets the highest industry standards for reliability and performance, giving you peace of mind and confidence in our services.

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One-stop Service

From PCB fabrication and design to component sourcing and IC programming, Bester offers a comprehensive range of services under one roof, streamlining the production process and saving you time and effort.

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Fast Turnaround

Our commitment to fast turnaround times means that your PCB assembly projects will be completed on schedule, allowing you to meet your production deadlines and get your products to market quickly.

Clients and Certifications

Electronics Manufacturing Capabilities at Bester

Manufacturing Capabilities

  • 100% ESD Components Control
  • 8 SMT Lines
  • 4 DIP Lines
  • 40 Automatic Robotic Soldering
  • CNC Machining
  • Automated Conformal Coating
  • Injection Molding
  • 3D Printing


  • ISO 9001
  • UL
  • SGS
  • IPC
  • RoHS
  • CE
  • FCC
  • SRDI (China’s “Specialized, Refinement, Differential, Innovation” Enterprise)
  • HNTE (China’s High and New Technology Enterprise)

Industries We Serve

Automotive Market


We understand the critical role that PCBA plays in the automotive industry. With our comprehensive PCBA services, we cater to the specific needs of automotive manufacturers, helping them deliver reliable and high-performing electronic systems.

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In the LED market, Bester provides top-notch PCBA solutions that are essential for the production of high-quality LED lighting products. We work closely with LED manufacturers to ensure that their PCBAs meet the stringent requirements of energy efficiency, durability, and performance.

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Consumer Electronics Market

Consumer Electronics

Bester caters to the consumer electronics market by offering a wide range of PCBA services that enable the production of innovative and user-friendly electronic devices. We collaborate with consumer electronics manufacturers to ensure that their PCBAs meet the highest standards of quality and functionality.

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Industrial Market


In the industrial sector, Bester’s PCBA services play a crucial role in the development of reliable and efficient electronic systems. We work closely with industrial equipment manufacturers to meet their specific requirements, ensuring that our PCBAs can withstand harsh environmental conditions and deliver optimal performance.

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