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 named microwave.
Typical frequencies for wireless applications:
* Current: 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) Tg288 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 288
Final foil external:	1oz
Final foil internal:	0oz
Final height of PCB:	0.8mm 0.1
PLATING and COATING
Surface Finish	Immersion gold 0.025m over 3m 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.

Variety of PCBs

Pattern developing