Kerui Electronic Industrial DTP copper mcpcb

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leo ou
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Kerui Electronic Industrial DTP copper mcpcb

I am Sundy from Kerui Electronic Industrial company.

Our company works on the MCPCB field for 20 years manufacturing products that are widely used in telecommunications, electricity, electronics and other fields. We are also in cooperation with famous manufacturers as PHILIPS, Schneider Electric and other smaller companies.

In addition we are exporting single and double sided MCPCB, double-layer MCPCB, High thermal 350W direct thermal exchange and COB MCPCB .

We also carry RoHS,UL ,CE and other certification.

We can customize and design MCPCB according to customer requirements.

DTP technology exists for many years in China.We called it Direct Thermal Exchange technology which was our company patent of invention at 2008. Main feature is LED Solid crystal area with the substrate conduction.

 

 

If you need your own design of DTP MCPCB please feel free to contact us.
We offer free test samples(buyer pays shipping costs).

Sundy
Skype:szkerui-michelle
Email: 1113893658@qq.com(link sends e-mail)
www.e-cer.com(link is external)
szkerui.en.alibaba.com
Shenzhen Kerui Electronic Industrial Co., Ltd.

Edited by: leo ou on 02/26/2021 - 20:46
MG
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Good prospect for a BLF group buy.

leo ou
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Hi Sharpie

Yes,We have some standard products,as 20mm XML 20mm XHP70 20mm XPG,16mm XML 16mm XHP70,10mm XML 10mm XPG,But because we are manufacturer,most of
order was according customer Engineering drawing to make.

Regards,
Sundy

leo ou
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Hi Sharpie

Thank you.
Sometimes we can supply small quantities, economically,to Western customers,But For Western customers If was small quantities,
maybe not economically,because they need pay for the shipment.I am honest to say.

Best wishes
Sundy

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There must be various configurations of stars to mount LEDs that are not available from Noctigon or SinkPAD. For instance, there was a thread about how to deal with Nichia LEDs that have only two pads.
There are also drivers that would benefit from metal PCBs. High current buck drivers such as those that Richard McDougal, aka. RMM and Mountain Electronics, sells, and regulating drivers that use FETs in linear mode to control current rather than pulse width modulation come to mind. I believe that is how led4power’s drivers work (http://budgetlightforum.com/node/39824). PWM FET drivers might be improved by larger gate resistors to make the FETs work in a linear mode for the lower modes if the cooling would take it.

Flashlight designers should look at lighthouses and pottery.
这些谁设计的手电筒应该看灯塔,以及在陶器。

leo ou
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If have interesting,you can learn more.

best wishes

MRsDNF
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Just a question on the quad TPAD MCPCB. Do you own the rights to this particular MCPCB?

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

leo ou
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Yes,we have Invention patent certificate in Chinese.

Sundy

DavidEF
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MRsDNF wrote:
Just a question on the quad TPAD MCPCB. Do you own the rights to this particular MCPCB?

leo ou wrote:
Yes,we have Invention patent certificate in Chinese.

Sundy


Thanks! I was wondering about those too! I’m so glad you decided to come here to our forum and offer your services and I’m really looking forward to seeing what custom MCPCBs we can come up with. As was mentioned, there have already been some designs proposed around these pages, but no movement to get them produced.

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welight
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leo ou wrote:
Yes,we have Invention patent certificate in Chinese.

Sundy


say what???, this is my design and you have stolen the images??? and the board is not made by you!!!!!!!!!
Mark

Cutter Electronics Pty Ltd
Web: https://www.cutter.com.au

raccoon city
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welight wrote:
leo ou wrote:
Yes,we have Invention patent certificate in Chinese.

Sundy

say what???, this is my design and you have stolen the images??? and the board is not made by you!!!!!!!!!
Mark

busted

MRsDNF
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There seems to be a post missing here. A shame really as the truth came out with no response from them except a deleted post.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

leo ou
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Hi every one

Maybe this is your design,But you doubt I stolen the images is a shame,Do you sent this picture?
we are manufacturer,This technology have many years in China.We before called Direct Thermal Exchang technology,that was our
company patent of invention,Why we cannot make this board,I delect this picture is respect every one.

Thank you
Sundy

leo ou
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Hi every one

Maybe this is your design,But you doubt I stolen the images is a shame,Do you sent this picture?
we are manufacturer,This technology have many years in China.We before called Direct Thermal Exchang technology,that was our
company patent of invention,Why we cannot make this board,I delect this picture is respect every one.

Thank you
Sundy

welight
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I have no doubt you can make this PCB, but the design is my design and we have a factory which makes the PCB, so I dont need you to make it. There are many factories claiming to make DTP pcb, and many can however we make ours with very specific quality requirements and we are not looking to change
Cheers
Mark

Cutter Electronics Pty Ltd
Web: https://www.cutter.com.au

leo ou
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Hi

Thanks your explain,I repects you,we cannot make it,But the direct thermal change was our company patent of invention at 2008 is fact,
we also have our quality requirements.And now this technology is very popular in China.China’s patent awareness is not very strong,

Thanks
Sundy

luminarium iaculator
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Guys most of China sellers will do OEM or ODM orders for you.
Of course there is MOQ for such desires and that cost serious $…

They are obliged to protect that seller… So yes I agree that even single photo of ODM request should not leak into public because that is between seller and designer (another seller).

So he did not meant nothing wrong by posting that photo… Don’t be mad on leo ou please…

My suggestion:

If there are experienced members that would want to suggest or give their working ideas for wellbeing of BLF community you could listen to them and make us lets say BLF DTP boards .

That way you’ll not brake any ODM rule cause we all participated in design…

Hope that this thread will stay alive and that something good will be born from it Smile

pommie
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leo ou wrote:
Hi

Thanks your explain,I repects you,we cannot make it,But the direct thermal change was our company patent of invention at 2008 is fact,
we also have our quality requirements.And now this technology is very popular in China.China’s patent awareness is not very strong,

Thanks
Sundy


While it refers to older Epistar type leds it is still dtp.
Direct thermal path patent

http://www.freepatentsonline.com/6428189.html

Dated 2000 Big Smile

Cheers David

Nothing to see here folks, move along...

semiman
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If I am not mistaken, that patent refers to a different technology where a hole is actually cut into the PCB.

That differs from building up a copper pad on a copper (or aluminum) core PCB. Subtle, but different.

There were a lot of related but different solutions in the early days of LEDs and PCBs including inserting copper slugs into a whole in the PCB, direct PCB onto heatsink, etc.

This is one of the early patents on the PCB: http://www.google.com/patents/US6711812 This particular one using bias, which is pretty narrowly written which would allow easy ways around it.

pommie
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You are right, in that one the led slug goes down to the heat sink, on a modern one the heat sink is built up to the slug, in other words there is a hole cut in the dielectric layer just the same as there was a hole cut in the pcb Wink
I know that as far as patents are concerned that could be enough to give out a new patent, however this company is making claims that they developed direct thermal transfer and patented it in 2008, the patent I linked to shows that dtp was developed well before that.
Snipped from the OP

leo ou wrote:
DTP technology exists for many years in China.We called it Direct Thermal Exchange technology which was our company patent of invention at 2008.

If they had just come onto the forum saying as a manufacturer they are willing to sell small numbers to us directly with proper info on their products not just saying “Email us and we will tell you”, no data, no prices Sick I would of been at the least curious, but when someone wants to sell something without showing it, it is called buying a pig in a poke.

Cheers David

Explanation,in medieval times a poke was a bag and “buying a pig in a poke” means buying unseen, many a person got home to find that they had bought a cat/dog when they opened the bag Shocked

Nothing to see here folks, move along...

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Since they manufacture to order maybe they are just showing the kinds of things they can do rather than things they have done. They really should only post advertising pictures of their own work though, don’t know which is which now. I like the wide traces.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

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HI all,

I’m not really sure of anything that happened with the picture of marks MCPCB, but here is my 2 cents.

I have contacted Sundy via email to inquire about getting samples. When I did I asked about all the sizes we typically use here 20mm 16mm etc. I also asked if they made a triple XML board ( like Sinkpad, Cutter electronics and sevral other makers do), and linked Marks website as an example. I was told they did not stock this size board but would be glad to manufacture one. I’m not sure if that has anything to do with the picture that was posted, but I thought it might so I mentioned it. Perhaps they were offering to make this “type” of MCPCB?

As I said I am working on order a sample pack of several boards offered by the company. If they turn out to be true DTP boards, and the prices are reasonable I may do either a GB or a bulk purchase on my own.

My 2 cents Smile

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leo ou
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Our company many Direct Thermal Path copper mcpcb orders according customs engineering drawing to make,
sometimes,we also put forward our opinion about drawing,if customs have need,we also can design DTP mcpcb
MCPCB according to customer requirements.

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vestureofblood wrote:
I have contacted Sundy via email to inquire about getting samples. When I did I asked about all the sizes we typically use here 20mm 16mm etc. I also asked if they made a triple XML board ( like Sinkpad, Cutter electronics and sevral other makers do), and linked Marks website as an example. I was told they did not stock this size board but would be glad to manufacture one. I’m not sure if that has anything to do with the picture that was posted, but I thought it might so I mentioned it. Perhaps they were offering to make this “type” of MCPCB?

If they said this they are 100% cheaters.
All layers of boards are making in one big flat area and cutting (milling) small pcbs from it is the last operation.
There is no way to have 16-20mm preparated washers and then make DTP MCPCB from them with custom design by request.

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kiriba-ru wrote:
vestureofblood wrote:
I have contacted Sundy via email to inquire about getting samples. When I did I asked about all the sizes we typically use here 20mm 16mm etc. I also asked if they made a triple XML board ( like Sinkpad, Cutter electronics and sevral other makers do), and linked Marks website as an example. I was told they did not stock this size board but would be glad to manufacture one. I’m not sure if that has anything to do with the picture that was posted, but I thought it might so I mentioned it. Perhaps they were offering to make this “type” of MCPCB?

If they said this they are 100% cheaters.
All layers of boards are making in one big flat area and cutting (milling) small pcbs from it is the last operation.
There is no way to have 16-20mm preparated washers and then make DTP MCPCB from them with custom design by request.


I think you misunderstood. I don’t see anywhere that they said they had prepared boards or blanks to make DTP MCPCB from them. They claimed to be able to manufacture any size or shape of MCPCB, because they are a PCB manufacturer.

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kiriba-ru
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Yes, seem that I am wrong.
But anyway we need to see real photos. Those that are posted here are stolen from various websites and shows pbs made within different technologies.

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I am trying ATM to have them make a limited number of boards for Nichia 119, which are non-DTP btw. But if the order goes through, they will send a few DTP-XP board with the order to try them out.

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Maybe many people doubt me,but you can see our company website: http://www.e-cer.com.
And my email also enterprise email.

leo ou
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leo ou
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Hi Jos

How about the Nichia 119 copper mcpcb, if you also have any problem please tell me?yes if the orders goes through,
we will send a few free DTP copper for you testing.

Best wishes
Sundy

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DTP copper mcpcb testing report

ShenZhen KeRui Electronic Industrial Co., LTD
Copper substrate performance parameters form
Copper Substrate Model KR-CU-350W Product name Copper radiator panel
Performance parameter Unit Test value Test Method
Peel strength N/mm 2.2 GJB1651 – 4010
Surface resistance MΩ 1×(10^6) GJB1651 – 5020
Volume resistance MΩ.m 3.2×(10^7) GJB1651 – 5020
Breakdown voltage KV/min 1.0 GJB1651 – 5040
Dielectric constant – 3.0 (40℃,93%,96h)
Dip soldering of resistance ℃
260℃ 3min
No bubble, no
stratification
GJB1651 – 4010
Flammability – FV-0 GB/T4722 – 17
LED Solid crystal area with
the substrate conduction of
thermal conductivity
W/m.k- ≥350
Long-term use temperature ℃ ≤110 (40℃,93%,1Y)
The thermal conductivity of
the metal matrix W/m.k- ≥350

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