Your Premier 1 Oz Copper PCB Manufacturer in China

Why Choose PCBMay for Your 1 Oz Copper PCB

1 oz(35um or 1.4mil) copper PCB is the basic thickness of a printed circuit board. In fact, it depends on your product application, such as power supply PCB, its copper thickness is more than 2 oz.

As a leading 1 oz copper PCB manufacturer in China, PCBMay can provide PCB design & layout, PCB manufacturing, and PCB assembly service for you.

If you are looking for 1 oz copper PCB supplier, PCBMay is your perfect choice. We can provide rigid printed circuit board, flexible circuit board, rigid-flex PCB, and also singled-sided board, double-sided PCB, and multilayer printed circuit board with 1 oz copper.

We are a professional 1 oz copper PCB manufacturer in China with over 12 years. PCBMay 1 oz copper PCB can meet your different needs.

PCBMay has an entire staff from engineering, technical, production, sales, customer service, and more. Don’t worry about our service.

We have sufficient raw laminations in stock, such as Shengyi, ITEQ, KB, Rogers, Arlon, Nelco, Taconic, Nanya, etc. Therefore, we can meet your PCB material demands.

We offer our VIP customers top-quality and affordable prices and they give us a high reputation. We will provide you a one-stop solution for your all 1 oz copper PCB requirement.

No matter you need to quote or just ask the engineering questions of 1 oz copper PCB, PCBMay is always happy to help you.

As a reliable 1 oz copper PCB supplier and manufacturer in China, there are more than 500 workers in our workshop and we have imported many high-tech types of equipment to meet your complicated 1 oz copper PCB boards, including Rogers PCB, high-frequency PCB, HDI PCB, LED boards.

We are looking forward to working with you as a longer strategic partner.

Send your inquiry today.

1 Oz Copper PCB: The Ultimate FAQ Guide

Are you thinking about the ideal copper thickness in PCB?

Then, 1 Oz copper PCB will be the best solution for you. This Thickness is effective to ensure maximum signal propagation in electric circuits. Numerous benefits of 1 Oz copper PCB make it the most-used PCB in versatile projects.

But, are you aware of the particulars of 1 Oz copper PCB? PCBMay is the most trustworthy manufacturer of 1 Oz copper PCB of today. We are here to make you feel at ease.

This FAQ guide will let you know almost everything about the assembly and fabrication of 1 Oz copper PCB. Let’s make a move.

What Is 1 Oz Copper PCB?

1 Oz copper PCB is a kind of PCB with 1 Oz(Ounce) copper weight. This weight measurement of the inner copper layer occupies around 34.79(micron) or 1.37 mils. 1 Oz copper is the wide-used copper thickness of PCB.

This can cover approximately 1 square foot PCB surface. 1 Oz copper PCB ensures the maximum electricity passing at a certain temperature. It provides tremendous advantages like low dielectric constant, controlled resistance, high decomposition temperature, etc.

1 Oz Copper PCB

Besides, the high functionality of 1 Oz copper PCB makes it more convenient than other  PCBs of different thicknesses in the PCB industry.

What Are The Different Thicknesses Of Copper PCB?

There are various thicknesses of copper PCB in the market. 1 Oz copper PCB is the fundamental thickness of most of the PCBs. But you need to use copper PCBs of different weights sometimes to adjust the current capacity.

Here, we are explaining some other types of copper thicknesses for you.

0.5 Oz copper

The minimum gap between copper is 0.7 mils for 0.5 Oz copper PCB. This is usually used in inner layers of non-standard PCB applications. But, you can use 0.5 Oz copper PCB in outer layers along with 1 Oz copper.

1 Oz copper

Here the recommended gap is around 1.4 mils. This the best copper thickness in terms of uses and services. 1 Oz copper PCB can be used on both internal and external layers of standard PCB projects.

Different Thicknesses Of Copper PCB

2 Oz copper

This copper thickness is right to use with 3 Oz finished copper on the inner layer. This is a little bit costly PCB.

Except for these, there are many available copper thicknesses. You should choose the right copper thickness for your PCB projects.

What Are The Materials Of 1 Oz Copper PCB?

1 Oz copper PCB is made of some effective materials. These materials are the key reason for their incredible functionality. 1 Oz copper PCB consists of high-quality copper.

The conductivity of copper is the best to maintain a high current flow along with a controlled ohms resistance. This material is also more cost-effective compared to the other PCB materials.

1 Oz Copper PCB Materials

An alloy of tin is used in 1 Oz copper PCB. This alloy maintains the recommended thickness of copper PCB. 1 Oz copper PCB substrate contains flame retardant materials usually.

Besides, poly tetra fluorocarbon, epoxy resins, and microfibers are the basic materials of 1 Oz copper PCB.

What Are The Benefits Of 1 Oz Copper PCB?

1 Oz copper PCB renders tremendous benefits to ensure a successful project. Its high-quality performance in complicated circuits makes it a reliable PCB solution.

Some of the notable benefits of 1 Oz copper PCB are given to you.

Current carrying capacity

1 Oz copper PCB has the capability of optimizing current carrying capacity. The high conductivity of copper of 1 Oz thickness promotes smooth signal transmission. Standard 1 Oz copper plated device acts to transfer the produced heat to a heat sink.

Functionality

1 Oz copper PCB provides extreme functionality. It is compatible with high-volume complex electric circuits. 1 Oz copper PCB can operate through a wider range of temperatures.

Highly Functional 1 Oz Copper PCB

Besides, 1 Oz copper PCB can incorporate 0.5 Oz or 2 Oz copper weights on the same circuit layer. This property enhances its functionality to a large extent.

High decomposition temperature

This PCB has a higher value of decomposition temperature, which is more than 270⁰C. That’s why 1 Oz copper PCB assures a great thermal resistivity.

Endurance

1 Oz copper PCB has a high tolerance to thermal stains. That means it can maintain the consistency of properties in various thermal states. So, it provides outstanding dimensional stability without compromising the performance of the circuit.

Again, 1 Oz copper PCB promotes mechanical resistance between PTH(plated through holes) and the layers.

High power density

1 Oz copper PCB is capable of rendering high power density in electric devices. This is attached to a panel transformer. It acts to manage the required power in the PCB board.

Cost-effective

It is more cost-effective compared to other PCBs. 1 Oz copper PCB provides a great current carrying capacity with its standard thickness. So, it requires less cost to manufacture 1 Oz copper PCB.

These are the top advantages of 1 Oz copper PCB. Contact us. We provide high-quality fabrication and assembly of 1 Oz copper PCB.

What Are The Uses Of 1 Oz Copper PCB?

Thin size, high efficiency, etc make 1 Oz copper PCB ideal for modern electric applications. Here, some of its most remarkable uses are listed for your convenience.

1 Oz Copper PCB Of Versatile Uses

Let’s have a look.

• Military projects
• Automotive devices
• High-speed telecommunication
• Medical equipment
• Aviation industries
• Wireless technology
• Complex electric circuits

1 Oz copper covers a vast range of applications. Its immense advantages turn it into the most commonly used PCB of today.

Is 1 Oz Copper PCB Better Than 2 Oz Copper PCB?

1 Oz copper PCB is better than 2 Oz copper PCB in many ways. Some of the distinguishing properties between them are given here for you.

Cost-effective

Thicker PCBs cost higher than thinner PCBs. This happens due to their complex manufacturing methods. That’s why 1 Oz copper PCB is cost-effective.

Functionality

The minimum feature-spacing of 1 Oz copper PCB is lesser than 2 Oz copper PCB. The extra spacing between copper features results in complications. So, 1 Oz copper PCB provides immense functionality. It is very common in electrical devices due to this property.

2 Oz Copper PCB

PCB Stackup

1 Oz copper PCB stackup is less complicated than the others. A proper stackup of this PCB enhances the efficiency of circuits to a large extent.

These are the key reasons for 1 Oz copper PCB’s superiority.

How Does 1 Oz Copper PCB Affect The Manufacturing Cost Of PCB?

1 Oz copper PCB brings out integrity in the performance of PCBs. It affects the manufacturing cost as well.

1 Oz copper PCB optimizes the current carrying capacity with a high power density. It manages all of these with this 34.79-micron thickness. Thicker PCBs can offer such benefits to a low scale with a high manufacturing cost.

Cost-Effective 1 Oz Copper PCB

But, 1 Oz copper behaves in a different way here. It demands less spacing between features. Thus it lessens manufacturing costs because of its thinner thickness.

What Is The Best Trace Width Of 1 Oz Copper PCB?

You need to use 1 Oz copper PCB having the maximum current. The most proper trade width is required to ensure the best performance. This value varies as per your required current.

Trace width is essential to connect signals between two PCB junctions. For 1 Oz copper PCB, the best value of trace width is 7 to 12 mils.

1 Oz Copper PCB Trace Width

You should keep some factors in mind before choosing the right trace width for 1 Oz copper PCB. These factors are-

• Current capacity
• Cross-sectional area
• Resistance
• Trace termination

You can easily find out the value of trade width suitable for 1 Oz copper PCB. You just need to follow this formula:

Trace width, w=A/T x  1.378 mils

Here,

Trace thickness, T=1.37 mils (for 1 Oz copper PCB), A= Cross-sectional area (mils^2)

This area can be determined by the following equation.

Area, A=

Here, I=Required current (amps), K= Layer contant.

According to the IPC-2221,  K= 0.024 (inner layers)

K= 0.048 (outer layers)

= temperature rise (⁰C)

This means the difference between the highest and the normal value of 1 Oz copper PCB operating temperature. It refers to the maximum thermal energy that you are allowed to provide.

Thus, you can evaluate the best trace width for your most effective 1 Oz copper PCB.

What Is The Maximum Current Carrying Capacity Of 1 Oz Copper PCB?

1 Oz copper PCB is ideal for its maximum current carrying capacity. But, do you know what is the highest value of this?

Don’t worry. We are here for you. You can simply figure out the maximum current carrying capacity of 1 Oz copper PCB. You just need to do some calculations. But, to know the cross-sectional area is a pre-requirement for this computing.

Maximum current,  =

Here, b and c are constants. Their values are 0.725 and 0.44 respectively.

Current Capacity VS Trace Width Graph

You should know this value to keep 1 Oz copper PCB safe from being damaged. Now, you can easily calculate the highest range of current transfer through the above formula.

How Can You Calculate The Resistance Of 1 Oz Copper PCB?

Resistance is an important property of electric devices. It refers to the measurement of opposing the flow of current. Resistance affects the performance of 1 Oz copper PCB to a great extent. So, you need to know how much resistance 1 Oz copper PCB provides.

To calculate the resistance, you have to follow a formula.

Here, = resistivity at copper

= 1.7 10^(-6) Ohm-cm

L= Length of trace

A= cross-sectional area

= copper temperature coefficient of resistance

= 3.9 10^(-3) /⁰C

T= Experimental temperature

= room temperature (25⁰C)

You should use the thickness of 1 Oz copper PCB at a centimeter unit, which is 0.0035 cm. Now, you can know the active resistance of 1 Oz copper PCB.

What Are The Thermal Vias Of 1 Oz Copper PCB?

Like other vias, thermal vias are plated holes. But they are used to propagate heat between two layers through these holes. Thermal vias play a significant role to promote the efficiency of 1 Oz copper PCB. These vias affect the thermal dissipation of PCB materials.

1 Oz Copper PCB Thermal Vias

You need to be aware of some issues about the thermal vias of 1 Oz copper PCB. Such as:

• Thermal vias should not be so large. The larger shape of vias results in weakening the joint of solder. This phenomenon is called “solder wicking”. It happens for joining the IC and for errors of PCB.
• Small thermal vias have a higher thermal resistance. So, you have to negotiate with solder wicking and increased resistance.
• Thermal vias need to be adjusted to the Copper.
• Covering the thermal vias lessens the errors of solder joints. You should use a solder mask to cover vias.

These are the safety considerations for using thermal vias in 1 Oz copper PCB. You should consider such factors. Otherwise, you have to compromise the performance of 1 Oz copper PCB.

Can 1 Oz Copper PCB Be Used In Multilayer PCB Fabrication?

Yes. 1 Oz copper PCB is widely used in multilayer PCB fabrication. It can be used on the inner and outer layers of multilayer PCB. You can use 1 Oz copper in the internal layer and 0.5 Oz copper in the outer layer foils.

1 Oz Copper PCB Multilayer

But, using 1 Oz copper on the mirror opposite layers is good for proper multilayer PCB manufacturing.  Besides, 1 Oz copper can be used with 2 Oz copper also. You just need to ensure the even copper distribution in different layers of PCB.

What Should Be The Minimum Spacing Between Copper Features Of 1 Oz Copper PCB?

The minimum spacing between copper features is an important issue for 1 Oz copper PCB. Normally recommended space is small in the case of standard thickness. Thicker PCBs need large spacing. So, it influences PCB manufacturing.

1 Oz Copper PCB Minimum Spacing

The most widely used spacing between copper features of 1 Oz copper PCB is 3.5 mils. This ensures better PCB manufacturing. It varies due to trace width, maximum current requirement. This spacing also depends on the manufacturing process.

What Are The Primary Considerations In 1 Oz Copper PCB Stackup?

1 Oz copper demands some primary considerations for a well-designed PCB stackup.

You need to keep these in mind to ensure the right PCB stackup.

• The distribution of copper needs to be equal.
• The maximum current that 1 Oz copper PCB can handle.
• Use the same 1 Oz copper thickness in the PCB layers which are mirror opposite.
• Thermal vias should be used with proper current ratings and trace width.

1 Oz Copper PCB Stackup

These considerations will help to assure a proper stackup of 1 Oz copper PCB.

Can 1 Oz Copper PCB Be Customized?

Yes, you can use a customized 1 Oz copper PCB. Well-designed customization always keeps it one step ahead of the other PCB thicknesses.

To customize 1 Oz copper PCB, you need to have a proper schematic presentation of the design.  It is helpful to enhance the capability of your PCB. Like, you can add extra layers in 1 Oz copper PCB to make it compatible with complex circuits.

Customized 1 Oz Copper PCB

You also have opportunities of customizing via size to eliminate solder joints failure. A specific silkscreen layer can be added in 1 Oz copper PCB. This increases the functionality of PCB components.

So, you can use 1 Oz copper thickness to customize your PCB. It will please you to experience a perfect and professional 1 Oz copper PCB.  We ensure customized PCBs with huge manufacturing experiences. If you want to experience it, contact us.

What Are The Ways Of 1 Oz Copper PCB Layer Design?

You can usually design a 1 Oz copper PCB layer by using two methods.  Both of these ways are effective to maximize the performance of 1 Oz copper PCB.

Automated Process

This method optimizes 1 Oz copper PCB layers. The automatic way is perfect to design a large copper PCB area. Here, 1 Oz copper makes up the irregular shape of PCB.

You can do a tremendous 1 Oz copper PCB design this way. Especially, in managing thermal effects, complex shapes, and planes, etc automated PCB design is widely used.  But, time consumption is a drawback of this method.

1 Oz Copper PCB Layers

Manual Process

Manually 1 Oz copper PCB designing is a rapid method. But, it is not so efficient for complex and high-volume PCB applications. It requires a huge time in checking the faults of PCB design in manual ways.

This is useful in prototype projects. Between these two ways, automated 1 Oz copper PCB layer design is a more convenient option than manual designing in the long run.

What Are The Drawbacks Of 1 Oz Copper PCB?

1 Oz copper PCB renders huge benefits in PCB manufacturing. But, it has some drawbacks also. Such as:

• It provides less thermal strength than a thicker PCB
• In high-power transferring applications, 1 Oz copper PCB is less effective.
• It can’t handle extreme heat in some situations.

Effective 1 Oz Copper PCB

All of these limitations can be solved by using 1 Oz copper PCB of a trustworthy manufacturer. We have been providing a flawless fabrication of 1 Oz copper PCB for a long time. Contact us to experience the excellence of 1 Oz copper PCB.

How Can You Etch 1 Oz Copper PCB Laminate?

Etching of 1 Oz copper PCB refers to eliminating unnecessary material from the PCB laminate. In this case, the entire PCB laminate is kept under a standard chemical solution. Usually, ferric chloride is used for etching.

1 Oz Copper PCB Etching

You need to cover the required copper portion of the laminate.  Then ferric chloride removes the bare portion having extra copper. 1 Oz copper PCB has less space between features. That’s why etching takes less time compared to thicker PCBs.

To get a better idea, watch this video:

How Can You Verify The Performance Of 1 Oz Copper PCB?

To verify the performance of 1 Oz copper PCB, you need to depend on trusted testing.  Such as:

Solder Float Test

Thermal resistance is an important property that affects the performance of 1 Oz copper PCB. The solder float test verifies the resistive power of PCB materials against thermal stress. Watch this video to get a clear idea of this test:

1 Oz Copper PCB Soldering Test

Flying Probe Test

In the case of this performance testing, you have to use two probes to check the errors of ending points of 1 Oz copper PCB. There is no need to use fixtures at all.

The flying probe test kills time. But it is reliable for checking the problems of 1 Oz copper PCB.

Peel Test

This test measures the capability of peeling laminates from 1 Oz copper PCB.

Automated Optical Inspection (AOI) Test

This test matches 3D images of 1 Oz copper PCB with the best PCBs. If the images are identical to the optimum to a large extent, then the performance of PCB is good.

Solder Pot Test

The flaws of thermal vias cause solder wicking of 1 Oz copper PCB. A solder pot test is used in checking the solder joints of thermal vias.

How Can You Choose The Best Manufacturer Of 1 Oz Copper PCB?

You should be aware of some criteria to choose the best manufacturer of  1 Oz copper PCB. Such as-

• Low price.
• Sufficient materials for quick and proper assembly.
• Facility of customization
• Vast experience in conducting numerous PCB applications.
• The opportunity of running performance checking tests.
• A huge 1 Oz copper PCB manufacturing experience.
• Certification from well-known organizations like ISO, RoHS, etc.
• 24/7 technical support team

If you are interested in a highly functional 1 Oz copper PCB, contact us. We are providing the best manufacturing of 1 Oz copper PCB for 15 years.

Conclusion

1 Oz copper PCB is the most versatile and effective PCB for electric applications. It brings out integrity in performance. 1 Oz copper PCB promotes durability and consistency.

We have tried to cover the ins and outs of 1 Oz copper PCB in simple words. We hope this FAQ guide will help you to make your PCB choice easy. If you have more queries, contact us. We provide reliable and smooth manufacturing of 1 Oz copper PCB.

Stay tuned.