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: Dual Layer PCB on 30 mil RO4350B with Immersion ROHS Compliant
(Printed circuit boards are custom-made products, the picture and parameters shown are
Just for reference)

General description
this is a type of double sided PCB built on high frequency substrate with Tg 288C for the
Application of WiFi attenuator. It's 0.8 mm thick, white silkscreen over green solder mask.
All via's are open to air. Pads are covered by immersion gold. the base material is used from
Rogers RO4350B, entire board supplying 1 PCB up. They're fabricated per IPC 6012 Class 2
Using supplied Gerber data. Each 25 panels 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;
Tg > 280;
Stable electrical properties verus frequency;
Low thermal coefficient of dielectric constant;
Low Z-Axis expansion;
High solderability, no stressing of circuit boards and less contamination of PCB surface;
SMT process is resistant to reflow soldering, resistant to rework;
30000 square meter month capability;

Application
GPS antenna,Directional coupler,Spread spectrum,Tower Mounted Amplifier

Parameter and data sheet

PCB SIZE	65 x 32mm=1PCS
BOARD TYPE	Double sided PCB
Number of Layers	2 layers
Surface Mount Components	YES
through Hole Components	YES
LAYER STACKUP	Copper ------- 35um(1 oz)+plate TOP layer
	RO4350B 0.762mm
	Copper ------- 35um(1oz) + plate  BOT Layer
TECHNOLOGY
Minimum Trace and Space:	5.5 mil / 5 mil
Minimum / Maximum Holes:	0.3 mm / 5.2 mm
Number of Different Holes:	9
Number of Drill Holes:	102
Number of Milled Slots:	0
Number of Internal Cutouts:	0
Impedance Control:	no
Number of Gold finger:	0
BOARD MATERIAL
Glass Epoxy:	RO4350B Tg280, er<3.48, Rogers Corp.
Final foil external:	1.5 oz
Final foil internal:	N/A
Final height of PCB:	0.8 mm 10%
PLATING and COATING
Surface Finish	Immersion Gold
Solder Mask Apply to:	TOP, 12micron Minimum
Solder Mask Color:	Green, PSR-2000GT600D, Taiyo Supplied.
Solder Mask Type:	LPSM
CONTOUR/CUTTING	Routing
MARKING
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. Solder mask uncovered
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