From Prototype to Low Volume PCB Assembly Manufacturer

♦ What Is PCB Assembly Service?

​​PCB Assembly Service​​ refers to the process of assembling electronic components onto a printed circuit board (PCB) to create a functional electronic device. It involves several stages, from sourcing components to soldering and testing the final product.

♦ Key Steps in PCB Assembly:​​

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PCB Fabrication​​:

• • The bare PCB is manufactured with copper traces, pads, and layers based on the design file (Gerber file).

​​Component Sourcing (Procurement)​​:

• • Components (resistors, ICs, capacitors, etc.) are sourced based on the Bill of Materials (BOM).
  • Can include ​​surface-mount (SMD)​​ and ​​through-hole (THT)​​ components.

​​Solder Paste Application​​:

• • For SMD components, solder paste is applied to PCB pads using a stencil.

​​Pick-and-Place Machine​​:

• • Automated machines place SMD components onto the PCB with high precision.

​​Reflow Soldering​​:

• • The PCB passes through a reflow oven, melting the solder paste to form secure electrical connections.

​​Through-Hole Component Insertion (if needed)​​:

• • THT components are inserted manually or via automated insertion machines.

​​Wave Soldering (for THT)​​:

• • The PCB passes over a wave of molten solder to attach THT components.

​​Inspection & Testing​​:

• • ​​AOI (Automated Optical Inspection)​​ checks for defects.
  • ​​Functional Testing​​ ensures the assembled PCB works as intended.

​​Final Cleaning & Packaging​​:

• • Flux residues are cleaned, and the PCB is prepared for shipment.

♦ Types of PCB Assembly Services:​​

• • ​​Turnkey PCB Assembly​​: Full service (PCB fabrication + component sourcing + assembly).
  • ​​Partial (Consignment) Assembly​​: Customer provides components; the assembler handles soldering.
  • ​​Prototype Assembly​​: Low-volume assembly for testing designs.
  • ​​High-Volume Production​​: Mass production for commercial devices.

DQS Electronic Group is one of the leading EMS company in China, we provide PCB design, PCB manufacturing, PCB assembly service and testing. Welcome send us your Gerber file to get free quotation. Our email: info@dqspcba.com

♦ Technical Parameters

PCBA Prototype	Industrial Control PCBA	Telecom PCBA	Medical PCBA
Automotive PCBA	Consumer Electronic PCBA	LED PCBA	Security PCBA

DQS Electronic is located in Shenzhen, focusing on PCB Layout Design, PCB Fabrication, Electronic Components Sourcing, SMT, PCB Assembly and Testing. We are a one-stop EMS electronic manufacturing company committed to providing global customers with rapid prototyping and mass production.

Our products include single, double, multi, high frequency, aluminum base, copper base, FR-4 and other high precision circuit boards.

We have over 10 years of experience in serving many domestic and foreign brand customers in a wide range of fields such as Medical, Automotive, Industrial Automation, Artificial Intelligence, Smart Home, Security, Power and Communications, etc..