The most common Hybrid Metal Core PCB types

Hybrid Metal Core PCB manufacture process

• Posted on 23 Jun 2016
 
• By David
 
• In aluminum pcb
 No comment

First of all, David have to introduce a new PCB definition: Insulated metal substrate (IMS).
Its construction has a sub-assembly of non-thermal material, and usually this Hybrid Metal Core PCB manufacture processis independent.
In a ‘Hybrid’ IMS construction a “Sub-assembly” of a non-thermal material is processed independently.

New Hybird Metal Core PCB manufacture process is different

Some creative MCPCB manufacturers make a Hybrid IMS PCB bonded to the aluminum base with thermal materials.
That’s the reason why so many hybrid Metal Core PCB boards have difference when compares with before manufacture process.

Why we add aluminum base in metal core PCB manufacture process?

If you have read our aluminium PCB board article, you will find the aluminium layer can decrease the temperature of products.
Bonding this layer to an aluminum base with thermal dielectrics can help dissipate heat, improve the rigidity and act as a shield.
Due the metal core PCB manufacture process, some fabrications may use metal alloy instant of aluminium base.
By the way, even the metal alloy core PCB cheaper than metal core PCB, but the latter was recommended due to the reliability.

The most common Hybrid Metal Core PCB types

Now, more engineer prefers to choose hybrid metal core PCB, but most of them don’t know the full name of this board.
David just wants more guys know the truth of MCPCB, and introduce the most common hybrid aluminum PCB.
The most common construction is a 2-Layer or 4-Layer Sub-assembly made from conventional FR-4.
Click the link to read: The hybrid aluminum PCB manufacturer tells you its secret

Source: http://4mcpcb.com/hybrid-metal-core-pcb-manufacture-process.html

LED light circuit board is different from the normal PCB board

LED lights circuit board difference with normal PCB

• Posted on 21 Dec 2015
 
• By allen
 
• In led circuit board, led pcb board
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This post will discuss two different type PCB board.
If you have any about the circuit board LED lights question, please let me know.
We will update your opinion on this post.

What is the normal PCB board?

Here Allen don’t want to use the wiki definition of the normal PCB board, if you want to see it, please search on google.
When you unscrew the circuit board and take it out, you can see that the circuit board is a thin piece of fiberglass that has thin copper “wires” etched onto its surface.

LED light circuit board is different from the normal PCB board

The first is about construction layer.
LED light circuit board has three layers, top is the circuit layer, dielectric layer and the thermal conduction layer.
But most of the normal PCB board, top layer and inner layer were both circuit layer.

The second difference is application.
You know most of MCPCB board use LED lighting industry.
But the normal PCB board can use all electronic industries.

Source: http://4mcpcb.com/led-lights-circuit-board-difference-with-normal-pcb.html

Rigid flex PCB and rigid PCB assembly method comparison

The ignore assembly cost of the rigid flex PCB board

• Posted on 27 Jul 2016
 
• By Emma
 
• In Blog
 

No comment

We have discussed the right way calculated rigid flex PCB assembly, this post is related to this topic.

Rigid flex PCB and rigid PCB assembly method comparison

In rigid flex PCB assembly solution just require one assembly step.
But if use cables assembly on rigid PCB board, there were two or more steps to be assembly.

The ignore cost during rigid flex PCB assembly

If you just consider the price from rigid PCB supplier, you may speed more money to assemble you rigid PCB project.
What is the extra ignore cost during rigid flex PCB order?
Emma has asked this question to experience PCB experts, and get the answer below.
The ignore cost during rigid flex PCB assembly must include items such as: the cost of kitting for assembly, labor, in-process inspection, cable assembly, test, final test, PCB tooling and test, and the costs associated with the engineering time required for each of these operations.

Source: http://4mcpcb.com/the-ignore-assembly-cost-of-the-rigid-flex-pcb-board.html

Electronic devices in our normal life become more and more complex

Top 5 common problems of repair multilayer PCB board

• Posted on 14 Jun 2016
 
• By David
 
• In Blog
 No comment

Three assembly method of multilayer PCB board

If you have assembly some electronic products, you will find more small, smart device to have more complex assembly methods.
Most modern multilayer PCB boards use Surface Mount Technology (SMT), through-hole components, or a combination to form a hybrid SMT-through-hole component board.

Electronic devices in our normal life become more and more complex

Most modern HDTVs, computers, Servers, CNC devices, etc use high tech multilayer PCB boards.
These multilayer PCB boards can can contain 50 layers or so of interwoven copper metal traces and fiberglass.
If you have learn some multilayer PCB board, you may know it’s were diffcult to repair multilayer PCB board.

The theory of how to repair multilayer PCB boards

If you have learned some multilayer PCB manufacturer process, you may understand this part very easy.
The copper foil traces are connected using vials and blind vials which are embedded in the PCB board itself.
The villas are built up layer by layer using additive electroplating and or electroless plating systems.
Copper metal traces and pads are etched onto the surface of the board.
Once the etching, electroplating, and cleaning processes are finished a UV curable solder mask is then applied to the substrate or PCB surface.

Top 5 common problems of repair multilayer PCB board

Burnt PCB Traces

Burnt Components

Burnt PCB boards

Micro-crystalline fractures within RoHS compliant, solder joints (common on CPU’s and GPU’s)

Tin whiskers and gold whiskers

These boards can be repaired even when damage has occurred. PCB board failure can manifest itself in many different ways. Here are just a few.

Source: http://4mcpcb.com/top-5-common-problems-of-repair-multilayer-pcb-board.html

Most PCB manufacturers Use the oven to bake bat warping

The good PCB supplier has a good final inspection of flatness

If you have chosen a good PCB supplier, the quality guarantee is necessary.
Due to not every one PCB plant can provide 100% final flatness inspection.
Most important is that the bat warping can affect PCB performance.
That's the reason why we should avoid this issue.
So this paper will focus discuss how China PCB manufacturer treatment the bat warping PCB issue?

Most PCB manufacturers Use the oven to bake bat warping

HTDcircuits experts told us that all warping PCB boards should take out.
Usually the worker will pick out those warping PCB into the oven.
Then the oven will be set back under pressure, and the temperature can be get 150 degrees Celsius.
The last step is cool the PCB board in nature under pressure.
The cooling step can use 3-6 hours finish.

Take roof-floor bat in PCB flatness Check

Then we should check those warping PCB boards after the oven process.
Difference PCB manufacturers have a difference final inspection method.
In HTDcircuits plant, take roof-floor bat in PCB flatness check.
Due to this PCB, check method can save part board.
Even some of the PCB board may be two to three times the baked pressures to leveling.

Consider warping scrapped during PCB manufacturing

Most of time the warping issue can handle.
And there were some special machine can be use warping PCB board.
Even those methods can help you handle most warping issue.
Also consider warping scrapped during PCB manufacturing.
If more involved with the technological measures to prevent warping of practice, not baked pressure also useless part board, can only be scrapped.

Source:http://www.htdcircuits.com/how-china-pcb-manufacturer-treatment-the-bat-warping-pcb-issue-.html

The aim of multilayer PCB manufacturing material preparing process

The aim of multilayer PCB manufacturing material preparing process

If you have know the stress of multilayer PCB laminated, you will understand the aim of multilayer PCB manufacturing material preparing process more clear.
Because the layer after pressing except stress is very important for its lifetime. This point may confuse by most new hands of PCB designer.
So HTD circuits want to more guys to know that better multilayer PCB manufacturing material preparing process, longer life time it is.
The preparing for multilayer PCB manufacturing material process is one step completely not omitted.

The first step of multilayer PCB manufacturing material preparing

Produce multilayer prototypes in complete take out after.
The multilayer PCB manufacturing material can through hot, cold, cut or milling off.
All those PCB manufacturing method should be flashing in the oven.
Because most of time the stress of the PCB manufacturing material have changed when the flash in the oven.

The second step of multilayer PCB manufacturing material preparing

We have know the stress of multilayer PCB manufacturing material will be changed when it flash in the oven.
But how to measure the stress or how to make the decision to finish preparing process?
From our decades PCB experts, flat baked 4 hours, 150 degrees Celsius to release the stress gradually in the plate and resin curing.
This is a very important step for multilayer PCB board.
Because this factor not only relate to its lifetime, but also affect its performance.

Source: http://www.htdcircuits.com/do-you-know-the-preparing-process-of-multilayer-pcb-manufacturing-material.html