RF Hybrid High Frequency 6-layer PCB
Built On 10mil 0.254mm RO4350B and FR-4 with Blind Via
(Printed
circuit boards are custom-made products, the picture and parameters shown are
just for reference)
It’s
for the application of radar antenna. Two cores of RO4350B on top side and
bottom side, plated through holes connect each layer. Viewing from the
stack-up, each dielectric material is more than 0.2mmm thick which result in
whole PCB thickness to 1.9mm thick. Pads and holes are immersion gold plated. They're
fabricated per IPC 6012 Class 2 using supplied Gerber data. Each 25 panels are
packed for shipment.
Let’s
see second one.
This
type is more complex than the first one. The 10mil RO4350B core is the same.
The main difference is that it contains 3 types blind via.
The specifications
are as follows:
Base
material: RO4350B 10mil + FR4
Layer
count: 6 layers
Type:
Blind via L1-L2, L1-L3, L1-L4
Format:
82mm x 95mm = 1 type = 1 piece
Surface
finish: Immersion gold
Copper
weight: Outer layer 35 μm/ Inner layer 35 μm
Solder
mask / Legend: No
Final
PCB height: 1.4 mm
Standard:
IPC 6012 Class 2
Packing:
20 panels are packed for shipment.
Lead
time: 20 working days
Shelf
life: 6 months
There’s
a very similar products whose inner-layers are using half ounce copper.
Finished PCB thickness is 1.0mm.
Following is the stack-up and microsecton:
There’re many advantages of RO4350B
hybrid PCBs.
1) Signal
integrity performance improved over the stack-ups with all FR4 board;
2) Cost
reduced over stack-ups with all low loss material;
3) Engineering
design prevents problems from occurring in pre-production;
4) ISO9000,
ISO14001, IATF16949, UL Certified factory
5) IPC
Class 2 / IPC Class 3;
The
applications are wide, listed below: Radar data acquisition converter,
miscrostrip antenna, tower-mounted booster, modular oscilloscope, attenuator
and 5G antenna etc.
A 6 layer PCB is actually a 4-layer PCB with 2 signal layers added
between the planes. A 6 layer stack up includes six layers which are:
two internal planes, two internal layers, two external layers, one layer
for the ground, and one layer for the power.In short, a 6 layer PCB
consists of six layers of board material.
Appendix:
PCB Data Sheet:
|
PCB SIZE
|
75 x 110mm=1PCS
|
|
BOARD TYPE
|
Multilayer
PCB
|
|
Number
of Layers
|
6 Layers
|
|
Surface
Mount Components
|
YES
|
|
Through
Hole Components
|
No
|
|
LAYER STACKUP
|
Copper
------- 35um(1 oz)+plate TOP layer
|
|
Dielectric RO4350B 0.254mm (10 mil)
|
|
Copper ------- 35um(1oz)
|
|
|
PP+FR4+PP
0.695mm
|
|
|
Copper
------ 35um (1oz)
|
|
|
FR-4
0.25mm
|
|
|
Copper
------ 35um (1oz)
|
|
|
PP
0.21mm
|
|
|
Copper
------35um (1oz)
|
|
|
Dielectric
RO4350B 0.254mm (10 mil)
|
|
|
Copper
------- 35um(1 oz)+plate BOT layer
|
|
TECHNOLOGY
|
|
|
Minimum Trace and Space:
|
4
mil / 5 mil
|
|
Minimum
/ Maximum Holes:
|
0.3
mm / 2.0 mm
|
|
Number
of Different Holes:
|
12
|
|
Number
of Drill Holes:
|
167
|
|
Number
of Milled Slots:
|
0
|
|
Number
of Internal Cutouts:
|
3
|
|
Impedance
Control:
|
no
|
|
Number
of Gold finger:
|
0
|
|
BOARD
MATERIAL
|
|
|
Glass
Epoxy:
|
RO4350B
Tg280℃, er<3.48, Rogers
Corp. FR-4 IT158
|
|
Final
foil external:
|
1.5
oz
|
|
Final
foil internal:
|
1
oz
|
|
Final
height of PCB:
|
1.8
mm ±0.18mm
|
|
PLATING AND COATING
|
|
|
Surface Finish
|
Immersion gold
|
|
Solder
Mask Apply To:
|
TOP, 12micron
Minimum
|
|
Solder
Mask Color:
|
Green,
PRS-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. Blind via L1-L2, L3-L6
|
|
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.
|
PCB MANUFACTURING PROCESS:
BICHENG PCB WORKSHOP:
BICHENG PCB CERTIFICATE:
BICHENG MAIN COURIERS:
