Brief Introduction
Just as its name implies, high frequency is that the frequency is relatively high, generally refers
to the frequency of >=300 MHz (i.e. wave length <=1m), that is, the usual radio frequency band.
The electromagnetic wave of frequency >=1GHz is called microwave.
Typical frequencies for wireless applications:
* Current mobile: 0.9GHz - 2GHz
* 3G systems: 2.5GHz
* Bluetooth: 2.5GHz
* GPS: 12.6GHz
* LMDS: 24GHz and 40GHz
* Automotive: 77GHz
Market: RFID, Wireless communications, base station and antenna, amplifier, military products,
consumer electronics.
High frequency printed circuit board or microwave PCB refers to the printed circuit board made
on the high frequency (microwave) substrate copper clad plate. The common types are: Double
-sided board, multilayer board and mixed structure.
Mixed structure includes high performance special substrate, PP sheet + ordinary performance
board and PP sheet mixed pressing board; high frequency substrate + ordinary FR4 substrate;
high frequency substrate + metal base etc.
PCB Case: High frequency PCB RO4350B 30 mil(0.762mm)
Tg288ºC PCB
(Printed circuit boards are custom-made products, the picture and parameters shown are just
for reference)
General description
This is a type of high frequency PCB built on RO4350B 30 mil substrate for the application
of VHF radio. It's a 2 layer RF PCB board at 0.8 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
RO4003C exhibit a stable dielectric constant over a broad frequency range. This makes it
an ideal substrate for broadband applications.
Stable electrical coefficient of dielectric constant.
Excellent dimensional stability.
ENIG has good oxidation resistance and good heat dissipation.
Help you focus on your core competencies on research and development, sales and
marketing.
Right manufacturing instruction (MI),
Delivery on time: >98%
No MOQ, low cost for prototypes and samples.
High quality helps customers win cost-saving.
Application
Preamplifier, Radar data acquisition converter, Digital transmitter, Automatic gate induction
Parameter and data sheet
| PCB SIZE |
45 x 52mm=1PCS |
| BOARD TYPE |
|
| Number of Layers |
Double sided PCB |
| Surface Mount Components |
YES |
| Through Hole Components |
YES |
| LAYER STACKUP |
copper ------- 17um(0.5oz)+plate TOP layer |
| RO4350B 30mil (0.762mm) |
| copper ------- 17um(0.5oz)+plate BOT Layer |
| TECHNOLOGY |
|
| Minimum Trace and Space: |
8mil/8mil |
| Minimum / Maximum Holes: |
0.3/3.0mm |
| Number of Different Holes: |
5 |
| Number of Drill Holes: |
82 |
| Number of Milled Slots: |
1 |
| Number of Internal Cutouts: |
0 |
| Impedance Control |
no |
| BOARD MATERIAL |
|
| Glass Epoxy: |
RO4350B 30mil (0.762mm), Tg 288ºC |
| Final foil external: |
1oz |
| Final foil internal: |
0oz |
| Final height of PCB: |
0.8mm ±0.1 |
| PLATING AND COATING |
|
| Surface Finish |
Immersion gold 0.025µm over 3µm Nickel |
| Solder Mask Apply To: |
TOP and Bottom, 12micron Minimum |
| Solder Mask Color: |
Gloss Green, Taiyo PSR-2000GT600D |
| Solder Mask Type: |
LPSM |
| CONTOUR/CUTTING |
Routing |
| MARKING |
|
| Side of Component Legend |
TOP |
| Colour of Component Legend |
White |
| Manufacturer Name or Logo: |
Marked on the board in a conductor and leged
FREE AREA |
| VIA |
Plated through hole(PTH) |
| FLAMIBILITY RATING |
UL 94-V0 Approval MIN. |
| DIMENSION TOLERANCE |
|
| 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. |
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
Aluminum drill
Audited Supplier 
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