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Immersion Gold Single Layer Circuit Board

Immersion Gold Single Layer Circuit Board

Immersion gold single layer circuit board 1.Company Information Uniwell Circuits Co., Ltd, was founded in Shenzhen, China in April, 2007. Uniwell Circuits is a high-tech enterprise specializing in design, development, manufacture and sales of high precision double-sided & multilayer PCBs...

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Immersion gold single layer circuit board

1.Company information

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Specification: 

Layer: 1
Board Thickness: 1.55 mm
Surface treatment: immersion gold.
Material: FR4(IT158)  .
Min line width/line distance:30/25mil
Min hole:0.3m

Uniwell Circuits Co., Ltd, was founded in Shenzhen, China in April, 2007. Uniwell Circuits is a high-tech enterprise specializing in design, development, manufacture and sales of high precision double-sided & multilayer PCBs (Printed Circuit Board) focusing on quick turn, prototype, medium and large volumes.

Currently, our company has two modern factories that adhere to advanced management disciplines. Uniwell Circuits is one of the most competitive suppliers for high-end printed circuit board production in the local, domestic markets of China and is pursuing a technology road map targeting high-end printed circuit business worldwide. The Shenzhen factory is a brand new, hi-tech technology facility mainly focusing on quick turn, prototype and small volume production. With brand new equipment and total production area over 10,000 sq. meters, Uniwell Circuits is capable of producing 100,000 square feet of 2-32 layer PCBs and delivering over 5000 varieties monthly. We can produce quick turns to meet 24-hour delivery for double-sided PCBs, 48-hour for 4 to 8 layers and 120-hour for 10 layer or higher PCBs. 

2.Do you know what is ENIG and what is it used? 

1)What is ENIG?
ENIG is now one of the most widely used PCB finishes even though it has a high cost per board. It uses two layers to cover the copper. The first layer is an electroless nickel plate which is covered by the second layer, a thin sheet of immersion gold. This sheet of immersion gold is meant to protect the nickel layer from corroding by replacing atoms of nickel with atoms of gold.

Advantages

Disadvantages

High resistance to oxidation

Expensive

No toxic metals used

Complicated Process

Flat surface

Not re-workable

Long shelf life

Signal loss

Good for Plated-Through Holes (PTH)

Black pad of Ni2O3 forms but can be fixed using electroless palladium

2)What is it used?
It is a very flat surface that is ideal for Surface Mount Devices (SMDs) and Ball Grid Arrays (BGAs). Gold is a great conductor of electricity.  Many contract assemblers prefer this finish.

3.Packing & shipping 

1)Packing
We send products by vaccum package, antistatic package and carton box.

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2)Shipping
For the PCB prototype, PCB allegro, and small volume PCB , Uniwell generally use the express way(UPS,DHL, FedEx, TNT or EMS ). For the medium-volume PCB that we generally use air freight or ocean freight according to delivery time.

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