Electronic PCB Assembly Power Supply High Quality PCBA
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Product Description
Electronic PCB Assembly Power Supply High Quality PCBA
What is Electronic PCB Assembly?
Electronic PCB Assembly, or Printed Circuit Board Assembly (PCBA), is the complete process of mounting and soldering electronic components onto a bare PCB to create a functional electronic circuit. It transforms the fabricated board (with copper traces and pads) into a working module ready for integration into devices.
Key Stages of PCB Assembly:
- Component Sourcing - Procuring certified parts (resistors, ICs, connectors, etc.) from suppliers, often with traceability for quality control.
- Solder Paste Application - A stencil printer applies solder paste (a mix of flux and tiny solder balls) precisely onto pads where components will sit.
- Pick-and-Place - High-speed robotic machines place components onto the paste-covered pads, using optical alignment for micron-level accuracy (e.g., 0201 resistors, BGA chips).
- Reflow Soldering - The board passes through a controlled oven with temperature zones (preheat, thermal soak, reflow, cooling) to melt the paste, forming permanent joints. Lead-free solder (e.g., SAC305) requires higher temperatures (240-250°C).
- Inspection & Testing
- AOI (Automated Optical Inspection): Cameras detect misaligned parts, solder bridges, or missing components.
- X-ray: Checks hidden joints (e.g., BGAs).
- ICT (In-Circuit Test): Probes test electrical continuity, resistance, and component values.
- Functional Test: Validates the board under real-world conditions (e.g., firmware loading, signal integrity).
- Through-Hole Assembly (if needed) - For components like electrolytic capacitors or connectors, manual or wave soldering inserts leads through drilled holes.
- Conformal Coating & Final Assembly - Protective coatings (e.g., acrylic, silicone) shield against moisture/dust. Boards may then be integrated into enclosures with cables, heat sinks, etc.
DQS's PCB Assembly Capability
| Item | Normal | Special |
|---|---|---|
| SMT Assembly PCB(for SMT) specification |
Length and Width( L* W) Minimum: L≥3mm, W≥3mm |
L＜2mm |
| Maximum: L≤800mm, W≤460mm | L＞1200mm, W＞500mm | |
| Thickness( T) Thinnest: 0.2mm |
T＜0.1mm | |
| Thickest: 4 mm | T＞4.5mm | |
| SMT components specification Outline Dimension Min size: 0201(0.6mm*0.3mm) |
01005(0.3mm*0.2mm) | |
| Max size: 200 * 125 component thickness: T≤15mm |
6.5mm＜T≤15mm | |
| QFP,SOP,SOJ (multi pins) | Min pin space: 0.4mm | 0.3mm≤Pitch＜0.4mm |
| CSP/ BGA | Min ball space: 0.5mm | 0.3mm≤Pitch＜0.5mm |
| DIP Assembly PCB specification |
Length and Width ( L* W) Minimum: L≥50mm, W≥30mm |
L＜50mm |
| Maximum: L≤1200mm, W≤450mm | L≥1200mm, W≥500mm | |
| Thickness( T) Thinnest: 0.8mm Thickest: 3.5mm |
T＜0.8mm T＞2mm |
One-Stop Electronic Manufacturing Including
PCB Prototype | Quick Turn PCB | Single-Sided PCB | Double-Sided PCB | Multilayer PCB | Rigid PCB
Flexible PCB | Rigid-Flex PCB | Rigid-Flex PCB | Aluminum PCB | Metal Core PCB | Thick Copper PCB
HDI PCB | BGA PCB | High TG PCB | PCB Stencil | Impedance Control PCB | PCB Assembly
High-Frequency PCB | Bluetooth Circuit Board | Automotive PCB | USB Circuit Board | Halogen-Free PCB | Antenna PCB
Flexible PCB | Rigid-Flex PCB | Rigid-Flex PCB | Aluminum PCB | Metal Core PCB | Thick Copper PCB
HDI PCB | BGA PCB | High TG PCB | PCB Stencil | Impedance Control PCB | PCB Assembly
High-Frequency PCB | Bluetooth Circuit Board | Automotive PCB | USB Circuit Board | Halogen-Free PCB | Antenna PCB
Core Competencies of DQS PCB Assembly
SMT
- 13 automatic high-speed SMT line
- 5 million points / day
- FPC/Double sided mounted
- Automatic conformal coating
DIP
- 4 DIP line
- Post-soldering 700,000 points/day
- Professional DIP plug-in team
SMT Technology
- Min package: 01005
- Min pin: 0.3mm
- Min BGA pitch: 0.3 mm
PCBA OEM
- Full turnkey PCB assembly
- Partial turnkey PCB assembly
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Company
DQS Electronic Co., Limited
Location
Yasen Industrial Park, Baolong Street, Longgang District, Shenzhen
Contact Person
Jason Guan