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6 Layer FR4 PCB Board

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China Bicheng Electronics Technology Co., Ltd certification
China Bicheng Electronics Technology Co., Ltd certification
Kevin, Received and tested the boards - thanks very much. These are perfect, exactly what we needed. rgds Rich

—— Rich Rickett

Ruth, I got the PCB today, and they are just perfect. Please stay a little patience, my next order is coming soon. Kind regards from Hamburg Olaf

—— Olaf Kühnhold

Hi Natalie. It was perfect, I attach some pictures for your reference. And I send you next 2 projects to budget. Thanks a lot again

—— Sebastian Toplisek

Kevin, Thanks, they were perfectly made, and work well. As promised, here are the links for my latest project, using the PCBs you manufactured for me: Regards, Daniel

—— Daniel Ford

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6 Layer FR4 PCB Board

6 Layer FR4 PCB Board
6 Layer FR4 PCB Board 6 Layer FR4 PCB Board

Large Image :  6 Layer FR4 PCB Board

Product Details:
Place of Origin: CHINA
Brand Name: Bicheng
Certification: UL, ISO9001, IATF16949
Model Number: BIC-081.V1.0
Payment & Shipping Terms:
Minimum Order Quantity: 1PCS
Price: USD9.99-99.99
Packaging Details: Vacuum bags+Cartons
Delivery Time: 8-9 working days
Payment Terms: T/T
Supply Ability: 5000PCS per month
Detailed Product Description
Base Material: RO4350B+FR-4 Layer Count: 6 Layers
PCB Thickness: 1.8mm PCB Size: 75 X 110mm=1PCS
Solder Mask: Green Silkscreen: White
Copper Weight: 1oz Surface Finish: Immersion Gold
High Light:

6 Layer FR4 PCB Board


10mil FR4 PCB Board


FR4 6 Layer PCB


6 Layer Mixed PCB Built On 10mil 0.254mm RO4350B and FR-4 with Blind Via for Digital Radio Antennas

(Printed circuit boards are custom-made products, the picture and parameters shown are just for reference)


Hello everyone,

Warm greetings!

Today we’re talking about 6-layer hybrid PCB built on RO4350B and FR-4. Let’s see first one.

6 Layer FR4 PCB Board 0


It’s for the application of radar antenna. Two cores of RO4350B on top side and bottom side, plated through holes connect each layer. Viewing from the stack-up, each dielectric material is more than 0.2mmm thick which result in whole PCB thickness to 1.9mm thick. Pads and holes are immersion gold plated. They're fabricated per IPC 6012 Class 2 using supplied Gerber data. Each 25 panels are packed for shipment.


6 Layer FR4 PCB Board 1


Let’s see second one.


6 Layer FR4 PCB Board 2


This type is more complex than the first one. The 10mil RO4350B core is the same. The main difference is that it contains 3 types blind via. The specifications are as follows:


Base material: RO4350B 10mil + FR4

Layer count: 6 layers

Type: Blind via L1-L2, L1-L3, L1-L4

Format: 82mm x 95mm = 1 type = 1 piece

Surface finish: Immersion gold

Copper weight: Outer layer 35 μm/ Inner layer 35 μm

Solder mask / Legend: No

Final PCB height: 1.4 mm

Standard: IPC 6012 Class 2

Packing: 20 panels are packed for shipment.

Lead time: 20 working days

Shelf life: 6 months


There’s a very similar products whose inner-layers are using half ounce copper. Finished PCB thickness is 1.0mm. Following is the stack-up and microsecton.


6 Layer FR4 PCB Board 3

6 Layer FR4 PCB Board 4


Therere many advantages of RO4350B hybrid PCBs.

1) Signal integrity performance improved over the stack-ups with all FR4 board;

2) Cost reduced over stack-ups with all low loss material;

3) Engineering design prevents problems from occurring in pre-production;

4) ISO9000, ISO14001, IATF16949, UL Certified factory

5) IPC Class 2 / IPC Class 3;


The applications are wide, listed below:

-Radar data acquisition converter,

-miscrostrip antenna,

-tower-mounted booster,

-modular oscilloscope,

-attenuator and 5G antenna etc.


Thank you for your reading. You’re welcome to contact us for your RF PCB enquiries.


Appendix: PCB Data Sheet

PCB SIZE 75 x 110mm=1PCS
Number of Layers 6 Layers
Surface Mount Components YES
Through Hole Components No
LAYER STACKUP Copper ------- 35um(1 oz)+plate TOP layer
Dielectric RO4350B 0.254mm (10 mil)
Copper ------- 35um(1oz)
  PP+FR4+PP 0.695mm
  Copper ------ 35um (1oz)
  FR-4 0.25mm
  Copper ------ 35um (1oz)
  PP 0.21mm
  Copper ------35um (1oz)
  Dielectric RO4350B 0.254mm (10 mil)
  Copper ------- 35um(1 oz)+plate BOT layer
Minimum Trace and Space: 4 mil / 5 mil
Minimum / Maximum Holes: 0.3 mm / 2.0 mm
Number of Different Holes: 12
Number of Drill Holes: 167
Number of Milled Slots: 0
Number of Internal Cutouts: 3
Impedance Control: no
Number of Gold finger: 0
Glass Epoxy: RO4350B Tg280℃, er<3.48, Rogers Corp. FR-4 IT158
Final foil external: 1.5 oz
Final foil internal: 1 oz
Final height of PCB: 1.8 mm ±0.18mm
Surface Finish Immersion gold
Solder Mask Apply To: TOP, 12micron Minimum
Solder Mask Color: Green, PRS-2000GT600D, Taiyo Supplied.
Solder Mask Type: LPSM
Side of Component Legend TOP
Colour of Component Legend White, IJR-4000 MW300, Taiyo brand
Manufacturer Name or Logo: Marked on the board in a conductor and leged FREE AREA
VIA Plated through hole(PTH), minimum size 0.3mm. Blind via L1-L2, L3-L6
Outline dimension: 0.0059"
Board plating: 0.0029"
Drill tolerance: 0.002"
TEST 100% Electrical Test prior shipment
TYPE OF ARTWORK TO BE SUPPLIED email file, Gerber RS-274-X, PCBDOC etc
SERVICE AREA Worldwide, Globally.


6 Layer FR4 PCB Board 5


Contact Details
Bicheng Electronics Technology Co., Ltd

Contact Person: Ms. Ivy Deng

Tel: 86-755-27374946

Fax: 86-755-27374848

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