Brief Introduction
RO4350B High Frequency Circuit Material is glass reinforced hydrocarbon/ceramic laminates
(Not PTFE) designed for performance sensitive, high volume commercial applications. Currently
Double sided and multilayer RO4350B PCB's are available at Bicheng company. Double sided
RO4350B PCB with thickness 10mil (0.254mm), 20mil (0.508mm), 30mil (0.762mm) and 60mil
(1.524mm) are the bestsellers. We provide prototype runs, small batches and volume production
Services.

Advantages
1) Excellent high frequency performance due to low dielectric tolerance and loss;
2) Excellent dimensional stability.
3) Low thermal coefficient of dielectric constant;
4) Low Z-Axis expansion;
5) Low in-plane expansion coefficient;
6) Stable electrical properties verus frequency;

Applications
1) Attenuator, Automatic gate induction;
2) LNB's for direct broadcast satellites;
3) Microstrip antenna, spread spectrum;
4) Microstrip and cellular base station antennas and power amplifiers;
5) RF identifications tags
6) Spread spectrum communications systems
7) Trunk amplifier, splitter module etc.



PCB Case: Immersion Gold RF PCB Built on RO4350B
30mil with 2 Layer Copper
(PCB's are custom-made products, the picture and parameters shown are just for
Reference)

General description
this is a type of dual layer PCB built on 30mil RO4350B substrate with Tg 280C for the
Application of Antenna WiFi. It's 0.8 mm thick with white silkscreen (Taiyo) on green solder
Mask (Taiyo) and immersion gold on pads. All vias are designed with open-solder-mask.
the base material is from Rogers supplying 2 designs 2 up PCBs per panel to save cost.
They're fabricated per IPC 6012 Class 2 using supplied Gerber data. Each 50 panels are
Packed for shipment. 

Features and benefits
Good high temperature and low temperature resistance.(-192-260)
RO4350B exhibits a stable dielectric constant over a broad frequency range. this
Makes it an ideal substrate for broadband applications.
Stable electrical coefficient of dielectric constant.
Immersion gold has excellent surface planarity, particularly helpful for PCBs with BGA
Packages or even CSP mounted components to reduce failure rate during assembly and
Soldering.
High voltage test, Impedance control test, micro-section, solder-ability test, 
Right manufacturing instruction (MI), 
Delivery on time: >98%  
Eligible products rate of first production: >95%  
Competitive price


Application
Splitter, Variocoupler, Microstrip antenna, 3G antenna, Relay Stations, RF Switches


Parameter and data sheet

PCB SIZE	35 x 77 mm=2 designs = 2PCS
BOARD TYPE	Double sided PCB
Number of Layers	2 layers
Surface Mount Components	YES
through Hole Components	NO
LAYER STACKUP	Copper ------- 35um(1 oz)+plate TOP layer
	RO4350B 0.762mm
	Copper ------- 35um(1 oz)+plate BOT layer
TECHNOLOGY
Minimum Trace and Space:	6 mil / 6 mil
Minimum / Maximum Holes:	0.3 mm / 5.6 mm
Number of Different Holes:	2
Number of Drill Holes:	182
Number of Milled Slots:	0
Number of Internal Cutouts:	0
Impedance Control:	no
Number of Gold finger:	0
BOARD MATERIAL
Glass Epoxy:	RO4350B Tg288, er<3.66, RogersCorp
Final foil external:	1 oz
Final foil internal:	1 oz
Final height of PCB:	0.8 mm 0.08
PLATING and COATING
Surface Finish	Immersion gold (23.3% ) 0.05m over 3m nickel
Solder Mask Apply to:	TOP and Bottom, 12micron Minimum
Solder Mask Color:	Green, PSR-2000GT600D, Taiyo Supplied.
Solder Mask Type:	LPSM
CONTOUR/CUTTING	Routing, v-cut
MARKING
Side of Component Legend	TOP and Bottom.
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.
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	Gerber RS-274-X, PCBDOC etc
SERVICE AREA	Worldwide, Globally.

Variety of PCBs

Inner Etching Alignment and hole-shooting Machine