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: Double Sided PCB Built on 10 mil RO4350B
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 double sided PCB built on 10mil RO4350B substrate with Tg 280C for the
Application of radar RF. Its finished thickness is 0.3mm and 1oz copper. White silkscreen and
Green solder mask covers both sides and immersion gold plated are on pads. 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;
Excellent high frequency performance due to low dielectric tolerance and loss;
Long storage time,it can be stored for more than 1 year in vacuum bag;
SMT process is resistant to reflow soldering, resistant to rework;
16000 square meter workshop;
UL, ISO14001, TS16949 certified;
Strict WIP inspection and monitoring as well as working instruction;
Quick CADCAM checking and free PCB quotation;
Competitive price;



Application
Balanced mixer,Photocoupler,Sound control switch induction,Multicoupler


Parameter and data sheet

PCB SIZE	91 x 62mm=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 0.254mm (10 mil)
	Copper ------- 35um(1oz) + plate  BOT Layer
TECHNOLOGY
Minimum Trace and Space:	4 mil / 4 mil
Minimum / Maximum Holes:	0.3 mm / 4.2 mm
Number of Different Holes:	9
Number of Drill Holes:	101
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:	0.3 mm 0.1
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.
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


PCB drill equipement