Brief Introduction
With the development of electronic communication technology, the communication frequency
is becoming higher and higher, and the high frequency signal transmission, need to use low
dielectric constant (Dk), low dielectric loss (Df) but expensive special materials. These materials
have cyanate and high frequency materials such as polytetrafluoroethylene / ceramic based
materials (PTFE/Ceramic), hydrocarbons / ceramic based materials (Hydra Carbon/Ceramic).
Usually these materials are expensive.
Reducing the cost is an important means for customers to improve the competitiveness of
products. Therefore, the customers adopt the laminated structure of mixed materials in the
design of PCB structure, that is, the necessary signal layer uses high-frequency materials
to meet the needs of signal transmission. Other line layers are made of conventional fiberglass
epoxy FR-4, which we call a hybrid board.
Available high frequency material (Core)
RO4350B RO4003C
4mil (0.1mm) 8mil (0.203mm)
6.6mil (0.168mm) 12mil (0.3mm)
10mil (0.254mm) 20mil (0.508mm)
13.3mil (0.338mm) 32mil (0.813mm)
20mil (0.508mm) 60mil (1.524mm)
30mil (0.762mm)
60mil (1.524mm)
PCB Case: 4 Layer PCB on RO4003C and FR-4 Green
Solder Mask Immersion Gold
(Printed circuit boards are custom-made products, the picture and parameters shown are
just for reference)
General description
This is a type of 4 layer hybrid PCB built on RO4003C and FR-4 combined for the application
of balanced amplifier at 1.6 mm thick. It's immersion gold finish with green solder mask and
white silkscreen. It's fabricated per IPC 6012 Class 2 using supplied Gerber data. Each 10
boards are packed for shipment.
Features and benefits
Delamination of copper foil will not be caused by the change of cold and heat due to the
consistency with the thermal expansion coefficient of copper foil.
The temperature coefficient of dielectric constant is among the lowest of any circuit board
material, making it ideal for temperature sensitive applications.
RO4003C exhibit a stable dielectric constant over a broad frequency range. This makes
it an ideal substrate for broadband applications.
SMT process is resistant to reflow soldering, resistant to rework due to gold pads.
100% tests inclusive of electrical test and AOI inspection.
Comprehensive equipment management and maintenance and process control,
Small quantity order is accepted
Customer complaint rate: <1%
RoHS materials
Application
Multiplexer, Photocoupler, Frequency converter, Combiner
Parameter and data sheet
| PCB SIZE |
81 x 61mm=1PCS |
| BOARD TYPE |
Hybrid PCB |
| Number of Layers |
Multilayer PCB, 4 Layer PCB |
| Surface Mount Components |
YES |
| Through Hole Components |
no |
| LAYER STACKUP |
copper ------- 35um(1oz)+plate TOP layer |
| RO4003C 20mil Er 3.38 |
| copper ------- 35um(1oz) MidLayer 1 |
| FR-4 0.4mm |
| copper ------- 35um(1oz) MidLayer 2 |
| RO4003C 20mil Er 3.38 |
| copper ------- 35um(1oz)+plate BOT Layer |
| TECHNOLOGY |
|
| Minimum Trace and Space: |
5mil/5mil |
| Minimum / Maximum Holes: |
0.3/3.5mm |
| Number of Different Holes: |
4 |
| Number of Drill Holes: |
912 |
| Number of Milled Slots: |
0 |
| Number of Internal Cutouts: |
1 |
| Impedance Control |
no |
| BOARD MATERIAL |
|
| Glass Epoxy: |
FR-4, ITEQ IT-180 TG>170, er<5.4. RO4003C 20mil |
| Final foil external: |
1.5oz |
| Final foil internal: |
1oz |
| Final height of PCB: |
1.6mm ±0.16 |
| PLATING AND COATING |
|
| Surface Finish |
Immersion Gold (16.5%) 2 micoinch over 100 microinch
nickel |
| Solder Mask Apply To: |
Top and Bottom, 12micon Minimum. |
| Solder Mask Color: |
Green, LP-4G G-05, Nanya supplied |
| Solder Mask Type: |
LPSM |
| CONTOUR/CUTTING |
Routing |
| MARKING |
|
| Side of Component Legend |
TOP |
| Colour of Component Legend |
White, S-380W, Taiyo Supplied. |
| Manufacturer Name or Logo: |
Marked on the board in a conductor and leged
FREE AREA |
| VIA |
Plated Through Hole(PTH), via tented |
| FLAMIBILITY RATING |
UL 94-V0 Approval MIN. |
| DIMENSION TOLERANCE |
|
| Outline dimension: |
0.0059" (0.15mm) |
| Board plating: |
0.0030" (0.076mm) |
| Drill tolerance: |
0.002" (0.05mm) |
| TEST |
100% Electrical Test prior shipment |
| TYPE OF ARTWORK TO BE SUPPLIED |
email file, Gerber RS-274-X, PCBDOC etc |
| SERVICE AREA |
Worldwide, Globally. |
Quality Policy
Bicheng has developed series of management procedures and approaches to assure that PCBs
are in compliance with the customers' requirements, inclusive of selection of the vendors, work
in progress (WIP) inspection, outgoing delivery inspection and customer service etc.
Evaluation and Audit of Suppliers
Suppliers have to be evaluated by Bicheng. In addition, Bicheng will appraise and rank suppliers
every year to guarantee the materials supplied are meeting Bicheng's requirements. Furthermore,
Bicheng continuously develop suppliers and supervise them to improve their quality and
environment management basing on the systems of ISO9001 & ISO14001.
Contract Evaluation
Bicheng shall review and verify customer's requirements to make sure that we have the
capability to satisfy customers' requirements including specifications, delivery and other
demands prior to accepting an order.
Making, audit and control of manufacturing data.
When customers' design data and specifications are provided to our market department,
Bicheng has to verify all the requirements. Then, convert the design data into manufacturing
data by CAM. Finally, a manufacturing instruction (MI) is generated according to the real
manufacturing process and technologies for manufacturing department as the basis for
actual fabrication. MI must be reviewed by independent engineers and QA engineers
before issue.
Incoming Material Quality Control
All materials have to be inspected before warehousing. We established a series of strict
inspection procedure and instruction to control the incoming materials. Furthermore, various
precise inspecting instruments and apparatus guarantee the capability to judge the material
good or not. We issue material with first in first out principle, and give out "alarm" for the
material that will reach the shelf life to ensure the materials are used up before expiry.
Control of Production Process
Right manufacturing instruction (MI), comprehensive equipment management and maintenance
and process control, strict WIP inspection and monitoring as well as working instruction, all those
make the whole fabrication process totally controlled.
Final Control and Inspection
All PCBs have to be gone through the open and short test as well as visual inspection after
passed the specified physical tests. We own various advanced test equipment including
customized, probe flying test machines to guarantee that each PCB is 100% tested.
Product Delivery Audit
We set up a dedicated FQA department to inspect the PCB products according to the
customer's specifications and requirements by sampling. Qualified PCBs are going to
be packed.
FQA also has to carry out a 100% audit of the warehouse packing and shipping products,
including product number, customer number, product quantity, shipping address and so on
prior to shipment.
Customer Service
We sets up a professional customer service team to proactively communicate with customers
and timely deal with the customers' feedbacks. We highly focus on customers' needs and to
understand customers' demands, timely to adjust the policy of customer service and PCB
product requirements.
Variety of PCBs
Audited Supplier 
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