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: Hybrid PCB 4 Layer RO435B and FR4 Combined
with 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 high frequency PCB built on RO4350B and FR-4 mixed for the application
of attenuator. It's a 4 layer RF PCB board 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
RO4350B exhibits a stable dielectric constant over a broad frequency range. This makes
it an ideal substrate for broadband applications.
No corrosion in acids, alkali and aqua regia.
Excellent high frequency performance due to low dielectric tolerance and loss.
ENIG has good oxidation resistance and good heat dissipation.
Comprehensive equipment management and maintenance and process control,
Engineering design prevents problems from occurring in pre-production.
1-10 pieces are offered.
High quality helps customers win cost-saving.
UL conformed
Application
RF transmitter, Directional coupler, RF Identification, 3G antenna
Parameter and data sheet
| PCB SIZE | 80 x 33mm=1PCS |
| BOARD TYPE | Hybrid PCB |
| Number of Layers | Multilayer Hybrid PCB, 4 layer PCB |
| Surface Mount Components | YES |
| Through Hole Components | YES |
| LAYER STACKUP | Top layer, copper ------- 35µm(1oz) TOP layer |
| 0.508mm RO4350B (dielectric 1) |
| GND layer, copper ------- 35µm(1oz) MidLayer 1 |
| 0.40mm FR-4 (dielectric 2) |
| Signal layer, copper ------- 35µm(1oz) MidLayer 2 |
| 0.60mm FR-4 (dielectric 2) |
| Bottom layer, copper ------- 35µm(1oz) BOT Layer |
| TECHNOLOGY | |
| Minimum Trace and Space: | 5mil/5.3mil |
| Minimum / Maximum Holes: | 0.3/5.98mm |
| Number of Different Holes: | 14 |
| Number of Drill Holes: | 631 |
| Number of Milled Slots: | 0 |
| Number of Internal Cutouts: | 0 |
| Impedance Control: | no |
| Number of Gold finger: | 0 |
| BOARD MATERIAL | |
| Glass Epoxy: | FR-4 TG135ºC and RO4350B Tg 288ºC |
| Final foil external: | 1oz |
| Final foil internal: | 1oz |
| Final height of PCB: | 1.6mm ±10% |
| PLATING AND COATING | |
| Surface Finish | Immersion gold Immersion gold (11.9% ) 0.05um
over 3um nickel |
| Solder Mask Apply To: | TOP and Bottom, 12micron Minimum |
| Solder Mask Color: | Green, PSR-2000 KX700G, Taiyo Supplied. |
| Solder Mask Type: | LPSM |
| CONTOUR/CUTTING | Routing. |
| MARKING | |
| Side of Component Legend | TOP. |
| Colour of Component Legend | White, IJR-4000 MW300, Taiyo Supplied. |
| 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" (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. |
About Us
Bicheng PCB, a unique printed circuit board supplier based in Shenzhen China serves worldwide
customers since it's born in 2003. At Bicheng, every batch of PCB goes through electrical test,
AOI inspection, high voltage test, Impedance control test, micro-section, solder-ability test,
thermal stress test, reliability test, insulation resistance test and ionic contamination test etc.
Finally it is like a beautiful gift to be delivered to your hands.
Different plant scale to suit for your requirements
16000 square meter factory building
30000 square meter month capability
8000 types of PCB per month
ISO9001, ISO14001, TS16949, UL Certified
Variety of PCB technology to meet the market demands
HDI board
Heavy copper board
Hybrid material board
Blind via board
High frequency board
Metal core board
Immersion gold board
Multilayer board
Backplane board
Gold finger board
Comprehensive sales service presale, in sale and after sale.
Quick CADCAM checking and free PCB quotation
Free-of-charge PCB panelization
Prototype PCB capability
Volume Production capability
Quick turn-around samples
Free-of-charge PCB test
Solid carton packing
Variety of PCBs
Audited Supplier 
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