printed circuit board(PCB), printed board assembly (PCBA)Service hotline:13530785158 Ms. Chen
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Scope of Services
PCB design
The core PCB design team of Dafengwang has gathered many senior professionals in the PCB industry. We focus on the production cost and production cycle of users, and are committed to providing customers with high-quality and efficient high-end PCB design and one-stop production services. What you are concerned about is what we should strive to do.

PCB design parameters

Maximum design floors Maximum number of PINs Maximum connection Minimum line width Minimum line spacing Minimum via Minimum BGA PIN spacing Maximum BGA PINs Highest speed signal
40 80000+ 50000+ 2mil(HDI) 2mil(HDI) 6mil (4mil for laser hole) 0.33mm 2500 2500

Design cycle

< 3000PIN 4000-9000PIN 10000-20000PIN > 20000PIN
5-7 days 7-15 days 16-30 days Review

Design Case

PCB L AYOUT is used to design the industrial control board, which is designed with CadonCc (allcgro software version 15.5). This PCB board is designed with USB, LAN, LPT and other serial ports, and has the functions of anti surge impact and anti-static; Display functions include VGA, LVDS, HDMI, DV1 and other interfaces; The expansion interfaces include PC104, PCI-E, PCI, etc. With the industrial motherboard, the backplane supports multiple extensions. The products are widely used in industrial Internet control, high-end servers, data center cloud servers and other fields. It is a classic work of our company.
This circuit board is an intelligent medical PCB board, which is designed with 12 layers of boards and Cadence software. It is mainly used in the fields of medical electronics and medical equipment video and image output, application signal processing, and medical electronic devices that need to interact with the human body. It is an innovative solution for touch screen to realize HMI technology. It is another masterpiece of our company in PCB field.
PCB production

1. PCB processing technology with the highest 64 layers, the minimum line width spacing is 2.5/2.5mil, and the maximum plate thickness aperture ratio is 16:1;

2. The processing technology of long and short gold fingers and the precision control of high-density circuits meet the design requirements of PCB in the field of photoelectric communication;

3. High precision back drilling technology reduces the equivalent series inductance of vias and meets the integrity requirements of product signal transmission;

4. Excellent metal base and super thick copper manufacturing process, meeting the high heat dissipation requirements of power supply products:

5. High precision machinery and laser depth control technology, realizing multi-level step groove product structure, and meeting the assembly requirements of different levels of products;

6. Mature pressure mixing process can realize the pressure mixing of FR-4 and high-frequency materials, and save material costs for customers on the premise of meeting the high-frequency performance of products;

7. Advanced Anti CAF technology greatly improves the reliability and service life of PCB products;

8. Priority is given to buried capacitor and buried resistor technology, which greatly improves PCB product performance;

PCB conventional board making parameters

Highest number of floors Maximum production size Minimum line width/spacing Maximum finished copper thickness Minimum through hole welding ring
40F 609*889mm 2.5/2.5mil 6oz 3mil
Minimum BGA Pitch Minimum finished aperture Maximum plate thickness aperture ratio Minimum insulation thickness Minimum BGA pad
0.4mm 6mil (4mil for laser) 20:1 2mil 8mil

PCB making cycle

2-8L 10-18L 20-30L 20-30L
4-8 days 10-14 days 15-18 days 18-22 days

Strict PCB board quality management

1. UL certification;

2. ISO9001: 2008 Quality System Certification;

3. ISO/TS1694: 2009 system certification;

4. GJB9001B military standard system certification;

5. Huawei/ZTE and other enterprise standards;

6. Manage the processing of customized products in strict accordance with IPC6012II/1l/military standard/customer standard/enterprise internal standard;

7. Strict customer information confidentiality management system.

Advanced processing and testing equipment

1. Orbotech AOL machine (automatic optical detection) imported from Israel is used to detect increasingly sophisticated PCB products;

2. The high-precision impedance tester imported from the United States meets the impedance test requirements of PCB products;

3. Advanced PLASMA plasma treatment equipment is used for the process of removing glue slag from the hole wall of high-frequency materials such as PTFE and ceramic filler;

4. Ende CNC drilling machine imported from Taiwan is used for processing back drilling and deep hole control;

5. Orbotech LDI machine (laser direct imaging) imported from Israel is used for graphic transfer process of high-precision lines;

6. Ende CNC molding machine imported from Taiwan is used for the deep milling process of PCB products with step groove structure;

7. The BURKLE press imported from Germany is used for the pressing process of high-level PCB boards;

8. Vacuum resin hole plugging machine, used for hole plugging process in BGA plate of high precision lines;

9. A variety of reliability testing equipment, such as ion contamination tester, peel strength tester, hole copper tester, anime tester, gold thickness tester, strongly guarantee the quality of customers' PCB products;

Technology roadmap
Item 2016 2017 2018
Number of Layers Conventional board 2-36 2-40 2-40
Buried IC no yes yes
HDI High density interconnection 1-2 Rank 1-4 Rank 1-5 Rank
Materials FR4 ( Shengyi ) yes yes yes
High Tg Tg-170 Tg-210 Tg-220
EHalongen Free yes yes yes
High Frequency yes yes yes
Maximum board size 20*30inch 20*30inch 20*35inch
Board thickness 0.21-6.0mm 0.21-6.0mm 0.21-6.0mm
Minimum line width 宽 3mil-inner 3mil-outer 2mil-inner 3mil-outer 2mil-inner 2mil-outer
Minimum Line gap 3mil-inner 3mil-outer 2mil-inner 3mil-outer 2mil-inner 2mil-outer
Outer layer copper thickness 5OZ 7OZ 7OZ
Inner layer copper thickness 5OZ 7OZ 7OZ
Min. finished hole size (Mechanical) 0.15mm yes yes yes
Min. finished hole size (laser hole) 0.076mm yes yes yes
Aspect ratio 16 : 1 20 : 1 20 : 1
Solder Mask Types and brand NAYA(LP-4G) yes yes yes
Tamura(TT19G) yes yes yes
TAIYO(PSR2200) yes yes yes
Solder Mask Color green;blue;red;white;black yes yes yes
Impedance Control Tolerance 5% yes yes yes
Plug via hole M in. size can be plugged: 0.1mm 0.1mm 0.1mm
Max. size can be plugged: 0.70mm 0.70mm 0.70mm
Min . annular ring can be kept 3mil 3mil 3mil
Min . distance between the IC pads can keep SM bridge 8mil 8mil 8mil
Min. SM bridge for green soldermask 3mil 3mil 3mil
Min. SM bridge for black soldermask 4mil 4mil 4mil
Surface Treatment H ASL yes yes yes
ENIG yes yes yes
OSP yes yes yes
LEAD FREE HASL yes yes yes
GOLD PLATING yes yes yes
IMMERSION Ag yes yes yes
IMMERSIONSn yes yes yes
V-Cut  CNC V-cut, degree  20\30\45\60 20\30\45\60 20\30\45\60
V-cut by hand, degree 20\30\45\60 20\30\45\60 20\30\45\60
Outline Profile CNC CNC CNC
Chamfer T he angle type of the chamfer: 20\30\45 20\30\45 20\30\45
Min. distance of jumping chamfer: 5mm 5mm 5mm
Tolerance of the dimension size 外形尺寸公差 ±0.1mm ±0.1mm ±0.1mm
Tolerance of the board thickness 0.21---1.0 ±0.1 ±0.1 ±0.1
1.0--2.5 ±7% ±7% ±7%
2.5-6.3 ±6% ±6% ±6%
Tolerance of the finished hole size 0-0.3 +0.08mm +0.08mm +0.08mm
0.31---0.8mm ±0.08mm ±0.08mm ±0.08mm
0.81-1.60mm ±0.05mm ±0.05mm ±0.05mm
1.61-2.49mm ±0.75mm ±0.75mm ±0.75mm
2.5-6.0mm +0.15/-0mm +0.15/-0mm +0.15/-1mm
>6.0mm +0.3 /-0mm +0.3 /-0mm +0.3 /-1mm
Certificates(copies are needed) U L E360485 E360485 E360485
ISO9001 yes yes yes
ISO14000 yes yes yes
ROHS yes yes yes
TS16949 yes yes yes
PCBA processing

1. Advanced equipment: new imported Sunmsug SMT mounter XPF, NXT3, ten temperature zone lead-free reflux furnace;

2. Professional management team: PCBA senior management team for more than ten years, SMT patch workshop implements Lean Production management;

3. Complete supporting facilities: AOI, SPI, XRAY, SMT patch, post welding and testing;

4. Fast delivery: PCBA project samples will be produced within 3 days, and the 48 hour delivery rate will exceed 96%.

Design parameters

SMT Capacity SMT production line Throwing rate PCB type Welding type
2Million+solder joints/day 2 0.25% for passive type; IC class 0% Conventional hard board/pure soft board/soft hard combination board Wave soldering, reflow soldering (lead-free/leaded)
Minimum package Minimum device accuracy Minimum device accuracy PCB size PCB thickness
03015 Chip/0.35 Pitch BGA ±0.04mm ±O.03mm 50* 50mm-686*508mm 0.3-6.5mm
Supply of electronic components

1. Our company has a team of engineers with three to ten years of experience in electronic component procurement, integrating thousands of high-quality electronic component supply chain resources, providing customers with global procurement services for commonly used electronic materials and major accessories, and reducing customers' material procurement time and cost in the research and development stage;

2. The standardized electronic component supplier certification and annual audit system, strict IQC incoming material inspection, constant temperature and humidity anti-static warehouse storage environment, and in accordance with the "FIFO" material control principle, ensure to provide customers with high-quality electronic component supply services.

Contact Us
Shenzhen Dafengwang Electronics Co., Ltd
Contact: Ms. Chen
Mobile phone: 13530785158

Email: coco@dfwdz.com

Address: 615, Building A, No. 8, Xinhe Avenue, Xinqiao Community, Xinqiao Street, Baoan District, Shenzhen Shenzhenwebsite:www.szdfwpcb.com
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