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ODM Industrial Control SOIC PCB SMT Assembly Electronics Manufacturing

12 Layer Industrial Control SMT PCB Assembly

♦ What Is SMT Assembly Service?

SMT Assembly (Surface Mount Technology Assembly) is a modern method of mounting electronic components directly onto the surface of a printed circuit board (PCB). It is the most widely used PCB assembly technique today, replacing traditional through-hole technology (THT) in most applications due to its efficiency, precision, and ability to support miniaturized and high-density designs.

♦ Key Features of SMT Assembly Services:

1. Automated & High-Speed Process

- Uses pick-and-place machines to accurately position tiny SMD (Surface Mount Device) components.
- Reflow soldering melts solder paste to create strong electrical connections.
- Ideal for high-volume production with consistent quality.

2. Supports Miniaturized & Complex Designs

- Enables smaller, lighter, and more compact PCBs (e.g., smartphones, wearables, IoT devices).
- Allows high component density (fine-pitch ICs, BGAs, QFNs, 01005 resistors, etc.).

3. Cost-Effective for Mass Production

- Faster assembly than through-hole (THT), reducing labor costs.
- Fewer drilling requirements (no holes needed for leads).

4. Common SMT Components

- Passive components (resistors, capacitors, inductors)
- Integrated Circuits (ICs) (QFP, BGA, SOIC, etc.)
- Connectors & LEDs (small-footprint versions)

♦ SMT vs. Through-Hole(THT) Assembly:

Feature	SMT Assembly	Through-Hole Assembly (THT)
Component Size	Small (SMD)	Larger (leads inserted into holes)
PCB Space Used	Less (higher density)	More (requires drilled holes)
Speed	Faster (automated)	Slower (manual or semi-auto)
Cost	Lower for mass production	Higher (labor-intensive)
Strength	Less mechanical strength	Stronger (better for high-stress parts)
Applications	Consumer electronics, IoT, medical devices	Industrial, automotive, high-power circuits

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: sales@dqspcba.com

♦ Technical Parameters

PCB Assembly Capability
Item				Normal	Special
SMT Assembly	PCB(used for SMT) specification	Length and Width( L* W)	Minimum	L≥3mm, W≥3mm	L＜2mm
		Length and Width( L* W)	Maximum	L≤800mm, W≤460mm	L ＞ 1200mm, W＞500mm
		Thickness( T)	Thinnest	0.2mm	T＜0.1mm
		Thickness( T)	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	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
		Length and Width( L* W)	Maximum	L≤1200mm, W≤450mm	L≥1200mm, W≥500mm
		Thickness( T)	Thinnest	0.8mm	T＜0.8mm
		Thickness( T)	Thickest	3.5mm	T＞2mm

♦ Application Fields


PCBA Prototype	Industrial Control PCBA	Telecom PCBA	Medical PCBA

Automotive PCBA	Consumer Electronic PCBA	LED PCBA	Security PCBA

♦ Advantages of DQS Team

On-time Delivery:

- Owned PCBA factories 15,000 ㎡
- 13 fully automatic SMT lines
- 4 DIP assembly lines

2. Quality Guaranteed:

- IATF, ISO, IPC, UL standards
- Online SPI, AOI, X-Ray Inspection
- The qualified rate of products reach 99.9%

3. Premium Service:

- 24H reply your inquiry
- Perfect after-sales service system
- From prototype to mass production

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Categories	SMT Assembly
Certification:	ISO, UL, IPC, Reach
Place of Origin:	China
MOQ:	1
Price:	Contact us
Payment Terms:	T/T
Delivery Time:	5-30 days
Layer:	12 Layer
Material:	FR4
Board Thickness:	2.5mm
Surface Finish:	Immersion Gold
Pin Space:	0.25mm
Application:	Industrial Control