Factory Professional One Stop Custom OEM Immersion Gold Finish Sensor PCBA

Product Information

What is the advantage of ENIG?

The advantages of ENIG:

• flat surface, good for small SMD devices,

• reworking availability (>3 times reflow),

• excellent electrical conductivity,

• anti-oxidation & anti-rust,

• good heat dissipation,

• higher surface thickness

The disadvantages of ENIG:

• soldering joints are not so strong

• expensive than HASL and OSP

• risk of "Black pad" or "Black Nickel"

​What is Black Pad in ENIG?

In the permutation reaction of ENIG process, if the nickel surface get excessive oxidation reaction, the metal nickel might convert into nickel ions, while the larger gold atoms (radius 144 pm) irregularly deposit to form a coarse and loose arrangement, which means the gold layer might fail to completely cover the nickel layer, allowing the nickel layer to contact with the air, which will finally create nickel rust under the gold layer. This kind of nickel rust will cause soldering failure.
So that another surface finish process called ENEPIG was come up to solve this problem of "black pad", but the cost of ENEPIG is relatively expensive, now it is more suitable for HDI boards, CSP or BGA.

How to create ENIG surface finish?

1. Pretreatment: Remove oxides from the copper surface while roughening to increase the adhesion of nickel and gold,

2. Micro Etching: Produce the uniform and flat copper surface,

3. Activation: A layer of palladium (Pd) will be applied to the copper surface as a catalyst for the deposition reaction, palladium ions are reduced to palladium metal adhered to the copper surface,

4. Nickel Plating: Block the diffusion between copper and gold, create a soldering base,

5. Immersion Gold: Prevent the oxidation of the nickel layer.

​

What is Electroplating Gold?

Immerse the circuit board in the electrolyte tank and apply current to form a nickel-gold plating on the copper surface of the circuit board. It possesses higher hardness, so also called hard gold.

ENIG is one of the most made surface finishes by PS Electronics, the services contain custom gold thickness, selective gold plating, etc. If any issues about ENIG, just contact us to get it through.

Our Services

1. PCB fabrication.

2. Turnkey PCBA: PCB+components sourcing+SMD and through-hole assembly

3. PCB clone, PCB reverse engineering.

PCB or PCBA Files Requests:

1. Gerber files of the bare PCB board
2. BOM (Bill of material) for assembly (please kindly advise us if there is any acceptablecomponents substitution.)
3. Testing Guide & Test Fixtures if necessary
4. Programming files & Programming tool if necessary
5. Schematic if necessary

Company Information

Global Well Electronic Inc. is a professional PCB solution supplier from Shenzhen, China, integrating PCB circuit board production and processing, STM processing and mounting, PCBA OEM, component purchasing, PCB/PCBA custom design-production- A comprehensive PCB circuit board company with one-stop turnkey service of processing-assembly-finished products. The company has a strong supply chain system, a professional and efficient collaborative team, a sound and complete quality control system, and the business philosophy of honesty and trustworthiness, customer first, and presents the products to everyone with low prices, reliable quality, high-quality service and after-sales service. client.

We provide total PCB solutions from PCB design to final mass production, including PCB fabrication and assembly, component sourcing, solder paste stencils, conformal coatings, and more. Serving the global electronics field, including industrial control, medical electronics, military equipment, power communication, automotive electronics, AI artificial intelligence, smart home and other industries.

Our factory located in Shenzhen, and have almost 300 employees, more than 30 production lines include SMT, DIP, automatic welding, aging test and assembly. We have SMT machines from Japan and Korea, automatic solder paste printing machines, solder paste inspection machine(SPI)12 temperature zone reflow soldering machine, AOI detector, X-RAY detector, wave soldering machine, EM PCB ,dispenser,laser print machine etc., Different line configurations can meet requirements from small sample order to bulk shipment.

Our company has obtained ISO 9001 quality system certification and ISO 14001 system certification. With multi-testingprocedures, our products carry out the quality system standard strictly.

Main Equipment:

PCB Technical Specification

(1) PCB Technical Specification

(2) Turnkey PCBA Capabilities

PCB&PCBA Products Show

Certifications

Packaging & Shipping

Packing details:

PCBA are packed into plastic bags. Plastic bags are put into small carton. 4 small carton into a big carton.

A big carton: 35×32×40 cm size.

Shipping Express:

FedEx, DHL, UPS, TNT, EMS, private lines, etc.

Air freight, Sea shipping

If you need help on PCB layout, you can contact us and send the board to us. We also provide Reverse Engineering Service.

We have been providing PCB Manufacture for many years in China,and we have rich experience in product production and product assembly.We believe our team will provide high quality and low cost service for you.

Thank you very much for all your support .

Best Regareds.

AFQ:

Q1: Do you have a price list?
A: We are OEM Manufacturer. We produce products per Customer’s designs and instructions. Hence we don’t have a price list.

Q2: What’s your MOQ for PCB, PCBA?
A: No MOQ for PCB and PCBA. We can do prototype and mass production as well.

Q3: Are my files safe?
A: We can sign an NDA(Non-disclosure agreement).Your files are held in complete safety and security.We protect the intellectual property for our customers in the whole process.All documents from customers are never shared with any third parties.

Q4: What is needed for PCB & PCBA quotation?
A: PCB: Quantity,Gerber file and technic requirements( board material, board size, surface finish treatment, copper thickness, board thickness).PCBA: PCB information,BOM,Testing documents.

Q5: What file formats do you accept for PCB and assembly?
A: Gerber file: CAM350 RS274X
PCB file: Protel 99SE,P-CAD 2001 PCB
BOM: Excel (PDF,word,txt)

Q6: Can you procure all parts in BOM for us?
A: YES, we can source all parts as per your bom list required.

Q7: Do you have after-sales product servicing available for your customers?
A: Yes, for any quality problems, we will take our responsibility to solve it for you at any time.