PCB Quality Control

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质量把-11

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Strict Quality Control

JH PCBA is definitely your best trusted one-stop PCB&PCBA partner! JH PCBA equipped with state-of-the-art PCB production and inspection equipment and only use famous brand PCB material and soldermask oil as basic quality assurance, we also implement strict quality control during every production process according to ISO9001, IATF16949 automotive, IPC 610 manufacturing control and quality acceptability criterion.

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- Manufacturing Standards-Read More
  
  Our technicians have many years of experience, and have been working strictly in accordance with high requirements and standards.
- Quality Control Process-Read More
  
  We believe that only a complete quality control process is an effective means to ensure quality.
- Quality Reports & Certifications-Read More
  
  We can provide you with complete quality reports and common certifications as proof of the quality of our products.
- Raw Material List-Read More
  
  The main raw material and specifications we used in our production are listed for your reference.

PCB Standards

PCB Production standards follow IPC Class II, Class III, Automotive Standard, Customer Standard

Item	Advanced PCB	Standard PCB
Engineering	one file/1 days+ Senior engineer	mid-level engineer(1 files/hours)
Material	Shengyi, Nanya ,Rogers, Arlon, Isola, Nelco etc.Meet IPC4101 class B/L	KB(kingboard)/GDM(goldenmax) Meet IPC4101 class B/L
Ink,Soldermasks	TAIYO, Rongda,Kuangshun Meet IPC-SM-840 class H, class	Rongda,Kuangshun Meet IPC-SM-840 class T, class 2
Drilling	Min Mechanical Hole Size 0.15mm,Laser hole 0.075mm	Min Mechanical Hole Size 0.2mm
Plating	±2mil,class 3	±3mil
Dimensional deviatio	±0.1mm,class 3	±0.15mm
Warping angl	0.5%, class 3	0.75%
Test metho	AOI, Kelvin Four-terminal sensing, Microsection Inspection, Solderability Test, Impedance Test...	AOI,Fly Probe Testing, E-test fixture
Etched lin	Forbid to repair tracks(IPC 3,Automotive,Customer Standard)
Cleanliness Ion	contamination test

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.

1. PCB Files Checking Before Production

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.

2. Raw Material Guarantee

The quality of the raw materials determines durability and security of the finished products. Ensuring the high quality of raw materials is one of the most basic principles for JH PCBA to manufacture PCB boards. JH PCBA has been working with leading suppliers in the industry,and inspect materials according to international standards and customer requirements, such as Shengyi、KB (kingboard)、 Nanya、Rogers、 Arlon、Taconic、Japan TAIYO and China Guangxin high-performance solder mask ink.

Click to view raw materials

3. The World's Leading Production Equipment

In order to ensure the best quality and reliability of PCB products, JH PCBA continuously introduces advanced equipment, including but not limited to the following:
● LDI Circuit Pattern exposure production line in 10 thousand class cleaning-room
● Automatic solder mask exposure production line in 10 thousand class cleaning-room
● Automatic solder mask ink printing production line in 10 thousand class cleaning-room
● VCP fully automatic electroplating line
● Online AOI Testing Machines
● Fully automatic PCB testing machine
● Fully automatic PCB etching production lines
● Silkscreen automatic Printer
● Own ENIG, OSP, resin plug etc surface finishing production lines
● Automatic AVI Inspection Machines

View the complete JH PCBA PCB production lines and equipment

4. Elite senior management team

As for the production and operation management, the taiwan advanced management mode have been adapted in all around way. Management team with more than 10 years top management experience in famous Taiwan and Japanese enterprises will strictly implement SOP production regulations conform to ISO standards.

5. 10 thousand class cleaning-rooms

LDI circuit pattern and solder mask exposure, silkscreen automatic printing etc key manufacturing processes are operated in 10 thousand class cleaning-rooms, strictly comply to automatic industry SOP management regulations, to try to extremely lower dust damage to production.

View our 10 thousand class cleaning-rooms

6.Quality Inspection Before Shipment

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 advanced testing and inspection equipment such as Flying Probes/Fixture, AOI, Copper Thickness Tester, Impedance Tester, Nickel and gold thickness tester, Ionic contamination test machine etc

View the complete JH PCBA PCB Inspection equipment

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 will provided and Micro-section and soldering samples, Impedance Testing Bar will be provided too if you need. Our PCB test reports includes COC, Product Features, Dimensions Report, Microsection Measurement Record, Thermal Stress Test, Solderability Test Report, E-test Report. For sample please click here to download. Test Reports Sample

1. Lamination

After lamination, there will be slicing test (to confirm the thickness of the dielectric), thermal shock test (to confirm whether it is delaminated), and also copper foil adhesion test.
2. Drilling

We will control the service life of the drill tips. The drill tips are coated, which can prolong the service life and reduce the hole diameter. After drilling, there is a test for roughness of hole side, and drilling machine inspection to check the hole position, aperture, whether there is missing hole or plug hole, etc.
3. Copper Plating

Backlight test is performed after plating process to check the thickness for plated copper.
4. Electroplating

CMI700 will be used to check the surface copper and hole wall copper. We normally use a small current for electroplating to ensure the even copper thickness.
5. Developing and Etching

In this process, the engineer will check the width and spacing of the circuits for the first piece, and later perform another random check. There is a checking station for the developing process to ensure the good quality.
6.AOI

AOI is performed after pattern plating. It is an automated optical inspection of PCBs in which a camera is used to scan the circuit board in extremely fine detail to check for any defects or malfunctions.
7. Soldermask and Silkscreen

We use LDI,automatic alignment exposure machine, to finish high quality soldermask process. Solder mask and silkscreen have to also go through QC semi-inspection, and there is also QA inspection (spot check) to check whether the solder mask is not fully developed, whether the solder mask enters the hole, whether the silkscreen printing is qualified, and whether the ink is too much to
8. Electrical test

Flying probe test and fixture test are typically performed at this stage
9. Routing

Now the boards will go through the routing process twice, and the second time is the fine routing.
10. V-CUT

First sample inspection is needed after going through V-cut process.
11. FQC

After the FQC inspection, there are also FQA random inspections, solder mask 3M adhesion tests, slicing test, and solderability test.
12. Physical Lab

The role of the physical laboratory is to use some devices to make quality tests on the boards of related processes. Commonly used tests include: metallographic microscope, X-ray inspection of inner layer, X-ray test of gold thickness, impedance tester, peel strength tester, coil resistance test, quadratic element, copper thickness tester, solderability test, backlight test
13. Chemistry Lab

The chemical laboratory generally checks the correct ratio of chemical ingredients to ensure the quality of the boards. Usually, some processes that need to use potions are inspected, including: copper plating, electroplating, solder mask, etching, developing, lamination of brown lines, surface treatment, etc.

Quality Certifications

By continuously upgrade manufacturing technology, optimize management standards, JH PCBA has passed several international quality and environmental certifications, ISO9001：2015, IATF16949：2016, Rohs, SGS, we are confident to provide professional turnkey PCB service to our worldwide customers.

IATF 16949
ISO 9001:2015
Rohs
SGS
UL
REACH

Resolving Quality Issues

If your order does not meet specifications, you will enjoy our rework or refund policy. You can issue any complaint within 5 working days after receiving the products. Our after-sales service team will resolve these issues as soon as possible, usually within 1-3 working days. We promise that if quality problems are caused by fabrication, JH PCBA will be responsible for free maintenance or rework, and bear the return shipping costs.

Unacceptable processing defects
Fail to meet tolerance requirement
Incorrect material / finish
  The part is not machinable
  Product not available
  Other reasons

Standard materials：

Type：	Manufacturer:	product:	TG:	TD:	DK:	Halogen-free:	cti:
FR4	Shengyi	S1141	135	310	4.6	NO
FR4	Shengyi	S1000	150	335	4.9	NO
FR4	Shengyi	S1000-2	170	330	4.8	NO
FR4	Shengyi	S1000-2M	180	355	4.6	NO
FR4	Shengyi	S1170	175	335	4.6	NO
FR4	Shengyi	S1155	170	330	4.8	YES
FR4	KB	6160	135	305	4.6	NO
FR4	KB	6160c	135	305	4.6	NO	600
FR4	KB	6165	150	335	4.65	NO
FR4	KB	6167	170	357	4.65	NO
FR4	ISOLA	FR406HR	170	295	3.8	NO
FR4	ISOLA	FR408HR	180	370	3.63	NO
FR4	ISOLA	370HR	180	370	3.6	NO
FR4	Ventec	VT-47	180	390	4.27	NO
FR4	WAZAM	H1600	130	310	4.6	NO	600
FR4	WAZAM	H140H	140	340	4.6	YES
FR4	WAZAM	H1170	170	340	4.6	NO
FR4	WAZAM	H140A	130	310	4.6	NO
FR4	GDM	GF111	125	280	4.5	NO
FR4	GDM	GF142	170	340	4.5	NO
FR4	GDM	GF112T4	125	340	4.5	NO	400
FR4	GDM	GF112T6	125	340	4.5	NO	600
FR4	TIEQ	IT158	155	345	4.6	NO
FR4	TIEQ	TI180	170	340	4.4	NO

Frequently Used Materials

Type:	Manufacturer:	product:	TG:	TD:	DK:	Halogen-free:
Ceramic polymer	Rogers	4350B	280	390	3.48	No
Ceramic polymer	Rogers	4003C	280	425	3.38	YES
Ceramic polymer	Rogers	RO3210	280	425	10.2	NO
PTFE	Rogers	R3003	280	425	3	NO
PTFE	Rogers	5880	280	345	2.2	NO
PTFE	Taconic	TLX-8	280	345	2.55	NO
Polyimide	ARLON	85N	260	380	4.3	NO
Polyimide	Ventec	VT-901	250	395	4.27	NO

Recognition & Awards

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