One-stop PCB Manufacturing and PCB Assembly solutions Manufacturer
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- sales@kkpcb.com
Quality Control
Ultimate Quality Control
KKPCB is definitely your trusted PCB Manufacturing and PCB Assembly partner! In addition to friendly service and on-time delivery, we also focus on producing high-quality products that meet or exceed customers’ expectations.
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Manufacturing Standards
Our technicians have many years of experience, and have been working strictly in accordance with high requirements and standards.
Quality Reports & Certifications
We can provide you with complete quality reports and common certifications as proof of the quality of our products.
Quality Control Process
We believe that only a complete quality control process is an effective means to ensure quality.
Raw Material Download
The specifications of the raw materials used in our production are available for download.
Manufacturing standards
Our experienced technicians will always ensure that all products are of exceptional quality,reliability and consistency.
PCB Standards
PCB Production standards follow IPC Class 2,IPC Class 3, ,Automotive Standard, Customer Standard
| Item | Advanced PCB | Standard PCB |
|---|---|---|
| Engineering | one file/1 days+ Senior engineer | mid-level engineer (1 files/hours) |
Material | Shengyi,Rogers,Arlon,Isola, Omega,Nelco,3M etc.Meet IPC4101 class B/L | KB(kingboard)/GDM(goldenmax) Meet IPC4101 class B/L |
Ink,Soldermasks | Rohm&Haas,TAIYO,Kuangshun,Meet IPC-SM-840 class T | TAIYO,Kuangshun,Meet IPC-SM-840 class T |
| Drilling | Min Mechanical Hole Size 0.15mm,Laser hole 0.1mm | Min Mechanical Hole Size 0.2mm |
| Plating | PTH (Hole copper thickness≥20um),IPC 3(25um) | PTH（Hole copper thickness≥18um） |
| Soldermask offset | ±2mil | ±3mil |
| Dimensional deviation | ±0.13mm | ±0.2mm |
| Warping angle | 0.75% | 1% |
| Test method | A.O.I,Kelvin Four-terminal sensing,Microsection Inspection,Solderability Test,Impedance Test… | A.O.I.,Fly Probe Testing, E-test fixture |
| Glass transition ℃ | >140℃ | >130℃ |
| Etched line | Forbid to repair tracks(IPC 3,Automotive,Customer Standard) | – |
| Cleanliness | Cleanliness requirements beyond those of IPC | Cleanliness requirements beyond those of IPC |
PCB Assembly Processing Capability
PCB Assembly standards follow IPC-A-610E Standard
| PCB Assembly Parameters | Bulk Order Supported Capabilities | Sample Order Supported Capabilities |
|---|---|---|
| PCB size | L50xW50mm~L510xW460mm | Unlimited |
| PCB thickness | T=0.4~4.0mm | Unlimited |
| Min SMD size | 01005（inch） | 01005（inch） |
| Max SMD size | 45x45mm（Connector length:150mm) | Unlimited |
| Min IC Pin Pitch | 0.3mm | 0.3mm |
| Min BGA Ball Pitch | 0.4mm | 0.4mm |
| Equipment placement accuracy | ±0.35mm @3σ | ±0.35mm @3σ |
| SMD production capacity | 1000K points/day | 200 Orders/day |
| DIP production capacity | 500K points/day | 200 Orders/day |
// Perfect quality system
Quality Control Process
The perfect quality assurance system and various testing equipment help us monitor the entire production process to ensure the stability of the process and product quality. At the same time, we also introduce advanced instruments and technical methods to achieve continuous improvement.
PCB Quality Control Process
For each order submitted, Gerber files will be reviewed by our professional engineers before being sent to production. Engineers will confirm the production feasibility in terms of tolerance constraints such as board edge clearance, drilling, pad spacing, impedance and routing. When the engineer finds a problem with the file or there is something that can be optimized, an EQ will be raised, and our customer service representative will get in touch with you, so as not to delay production.
The quality of the raw materials determines durability of the finished products. Ensuring the high quality of raw materials is one of the most basic principles for KKPCB to manufacture products. KKPCB has been working with leading suppliers in the industry,and inspect materials according to international standards and customer requirements, such as Shengyi, Rogers, KB (kingboard) sheet, Rohm&Haas, TAIYO high-performance solder mask ink.
In order to ensure the best quality and reliability of PCB products, KKPCB continuously introduces advanced equipment, including but not limited to the following:
- ● LDI exposure machine
- ● Automatic solder mask production line
- ● Fully automatic PCB testing machine
- ● Fully automatic PCB etching equipment
- ● Automatic silkscreen printing production line
- ● Fully automatic electroplating line
We strictly comply with ISO9001:2015 requirements and all production processes are in line with IPC standards. In addition to basic visual inspections, all boards undergo the most rigorous electrical tests. We use industry-renowned testing and inspection equipment such as Flying Probe Testing, AOI (Automated Optical Inspection) and Copper Thickness Tester.
We guarantee that every PCB in your hand is in good condition and you can proceed to the next step of assembly safely. Various types of test reports are available upon request.
Our quality control systems are regularly audited and assessed to ensure their compliance and effectiveness. A complete quality control system and 100% PCB testing procedures will ensure that every order you entrust is completed perfectly.
PCB Assembly Quality Control Process
KKPCB has dozens of SMT production lines. Advanced production equipment, strict quality control and intelligent service system to ensure the standardization and best quality of each production process.
Smart management system & Advanced production and testing equipment:
Quality checking process and description
01-Process review
Assess and inspect the particularity of the PCBA manufacturing process in advance, guide the production, and improve the quality from the process technology.
02-IQC Incoming Quality Control
● Check whether the resistance and capacitance values are correct
● Check whether the pads on the components and the board are consistent
● Confirm whether the incoming quantity is accurate
● Check whether the components are abnormal
03-SPI Solder Paste Inspection
SPI can detect whether the solder paste is sufficient and uniform, which can effectively prevent production quality problems in advance caused by poor solder paste printing.
04-Online AOI Inspection
The AOI can detect the wrong solder, reverse solder, false solder, empty solder, incomplete solder, short circuit, offset, tombstone, etc. after reflow soldering. And it can also detect excessive solder, less solder, continuous solder and other undesirable phenomena in the appearance of PCBA solder joints.
05-First sample test
Combined with Gerber, BOM and coordinate files, the resistance and capacitance in the completed PCBA are verified again by the first-sample tester to ensure the correctness of all parameter values.
06-Off-line AOI inspection
According to the IPC610D standard, inspect the soldered surface mount PCBA for errors, omissions, and false connections.
07-X-Ray welding inspection
Inspect the solder joints of invisible components to ensure the reliability of each solder ball of the BGA.
08-QC manual inspection
Refers to the standard IPC–610 inspection standard, and the finished board is visually inspected to ensure 100 % Good products shipped.
//Our Quality Certifications
Quality Certifications
KKPCB quality management system is to ensure with efficient printed circuit boards which meet customer’s requirements. Our partners manufacture in compliance with, among others, the following standards:
- IATF 16949:2016
- ISO 13485:2016
- IS0 14001:2015
- ISO 9001:2015
- ROHS
- REACH
- UL
- CE
Thanks to the materials used and advanced technology, we always ensure highest quality of our printed circuit boards!
KKPCB can provide customers with certifications in various markets, such as: EU RoHS certification, EU CE certification, US UL certification, US FCC certification, Australia SAA certification, Australia C-tick certification, Australia RCM certification, Japan PSE certification, Brazil INMETRO certification, Mexico NOM certification, Canadian IC certification, Korea lithium battery KC certification, Argentina IRAM S-mark certification, DLC certification, GS certification, CB certification, etc.
