shenzhen pcb manufacturing,multilayer pcb manufacturing in shenzhen

multilayer pcb manufacturing in shenzhen

    Shenzhen Semshine Technology Co., Ltd, which has specialized in making PCB since 2006, offers one-stop PCB manufacturing services, ranging from raw material and electronic components procurement, and PCB fabrication, to PCB assembly, testing, and after-market service.
    Up to now, Semshine owns more than 20000 sqm of plant with over 60000 sqm per month production capability;  and possesses the latest professional Fully automated equipment production line to handle the PCB, including double-sided, multilayer, and HDI PCBs, etc.  It can be widely applied to a variety of fields, such as communication, medical equipment, consumer electronics, Vehicle Electronics, etc.
    With rich experience and expertise, Semshine is your go-to choice for a China PCB manufacturer.  We are looking forward to establishing a long-term cooperative relationship with you.

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pcb manufacturing Types

PCB production process needs attention

Accuracy of design documents

The success of PCB production is related to the accuracy of the design file, so it is necessary to be as accurate as possible when designing the PCB board, and to verify and modify it many times.

Precision and quality of plate making

Plate making is the core link of PCB production, and its accuracy and quality directly affect the quality and stability of PCB board. Therefore, the plate making process requires fine operation and control to ensure the accuracy and quality of plate making.

Etching control

Etching is one of the key links in PCB production, and it is necessary to control the parameters of etching time, temperature, concentration and so on to avoid incomplete etching or excessive etching.

Quality of welding

Welding is one of the important links of PCB production, it is necessary to control the temperature, time, pressure and other parameters of welding to ensure the quality of welding and avoid problems such as weak welding or short circuit of the pad.

 Thoroughness of cleaning

Cleaning is the last link in PCB production, it is necessary to ensure the thoroughness of cleaning, avoid leaving residue or water stains, affecting the quality and stability of the PCB board.

 Perform safe operations

PCB production involves a variety of chemicals and equipment, and requires safe operation to ensure the safety and health of operators.

pcb manufacturing Why Choose Semshine

Supplier Evaluation
All of our suppliers have been screened and approved by our evaluation team and have extensive experience in the pcb field. Besides, we have passed ISO9001:2015, UL, ROHS to ensure high quality supply.

Pre-production Arrangement
The engineer checks the customer's design information, makes the production documents twice and is confirmed by the customer.

Control in Manufacturing
The factory has advanced automatic production line which reduces manual damage to boards.

Test of finish product
-Open/short, visual inspection and physical testing.
-Flying probe,ICT,and functional testing.

Delivery
Before delivery, the item number, customer code, quantity and consignee etc must be fully checked by the PQA.
Customer service
A special customer service team contacts customer, offers quick response and provides return and refund service.

PCB Manufacturer Capabilities

Category	Description	Capability
File Formats	Gerber files- preferred	Gerber file 274-X or ODB++
	Drill file	3.3  leading  mm
Size	Max. finished PCB dimensions	400mm x 1200mm – Single/ Double-sided
		600mm x 700mm – Multilayer
Board Thickness	Standard	1.6mm ±10%
	Min.	0.6mm ±10%
	Max.	3.2mm ±10%
	Bow and twist	0.50%
Copper Thickness	Outer Cu weight	0.5oz-12oz
	Inner Cu weight	0.5oz-12oz
Laminate Materials	FR4(KB, ILM, Shengyi, Huazheng new material ) ,    High TG, Aluminum plate( Taiwan)
Board Cutting	Max. number of layers	20
	Min. thickness for inner layers (Cu thickness are    excluded)	0.05mm
Drilling	Min. size	0.20mm
	Max. size	6.00mm
	Drill Deviation	±0.075mm
	NPTH hole tolerance	±0.05mm
	Angle of Countersink	45°
PTH	Min. hole size	0.20mm
	Aspect ratio	8:1
Etching	Trace width tolerance	±20%
	Min. trace width / space (1oz finished Cu weight starting from 1/3oz)	75um/75um  (3mil/3mil)
	Min. trace width / space  (1oz finished Cu weight starting from 1/2oz)	89um/89um  (3.5mil/3.5mmil)
	Min. trace width / space (2oz finished Cu weight)	150um/150um  (6mil/6mil)
Solder Mask	Color	Green,White,Black,Red,Blue,Etc.
	Min. solder mask clearance	3mil
	Thickness	Line angle:8um(min),Linear plane:10um(min),    base material:20-50um
Silkscreen	Color	White,Black,Etc.
	Min. trace width	100um 4mil
	Min. size	0.7mm 28mil
Test	AOI	100%
	Flying Probe Tester	Sample 100%
	E-test	Mass order 100%
Controlled Impedance	Tolerance	+/-10%
	Impedance tester	Test impedance module
Profile	Tolerance	±0.10mm
	V—CUT Depth	±0.10mm
	V—CUT angle deviation	30°
	Semi-hole	Minimum half hole:0.40mm
Surface Finish	HASL,Immersion gold(ENIG),OSP