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Multilayer PCB Circuit Board

Multilayer PCB or multilayer printed circuit board is a circuit board composed of two or more conductive layers (copper layers). Multilayer PCB can be divided into Multilayer Rigid PCB, Multilayer Flexible PCB, Multilayer Rigid-flex PCB. The copper layer is pressed together by the resin layer (prepreg). Due to the complexity of the multilayer PCB manufacturing process, low yield and difficulty in rework, their prices are relatively higher than single-layer and double-sided PCBs.

Multilayer PCB or multilayer printed circuit boards is a circuit board composed of two or more conductive layers (copper layers). Multilayer PCB can be divided into Multilayer Rigid PCB, Multilayer Flexible PCB, Multilayer Rigid-flex PCB. The copper layer is pressed together by the resin layer (prepreg). Due to the complexity of the multilayer PCB manufacturing process, low yield and difficulty in rework, their prices are relatively higher than single-layer and double-sided PCBs.

FASTPCBA manufactures up to 48 layers of multi-layer PCB, accepting pure single material or mixed pressing materials: Fr4, Rogers, Polymide, metal core etc.

Multilayer PCB_


Multilayer Printed Circuit Boards Capability :

Item Type Normal Manufacturing Capability

Avalibale Material

Normal FR4 S1141,S1155(Halogen free)

Hi TG FR4

ITEQ IT180A , TU768 ,S1000-2M ,S1165(Halogen free),Megtron-6,Megtron-4,NP-180A,VT-47 , TU872, PCL370HR,FR408,FR408HR

Others Rogers4350B,Rogers4003C,FTG8000, RT5880

PCB Type

Rigid PCB

Multilayer layer, HDI,Backplane,Blind and Buired

PCB,Rigid flex, flex, Heavy copper pcb,Back drill,Semiconductor test board.

Layer Count

1-50 layer for prototype, 1-30 layer for production

Surface

Treatment

Lead Free

HASL lead Free, ENIG, Immersion silver,

Immersion Tin,OSP,HARD GOLD,Soft Gold,Gold finger, ENEPIG

Lead

Leaded HASL

Board Thickness 8-275mil
Board Thickness Tol. <=40mil +/-4mil ; >40mil +/-10%
Min.Line Width&Spacing 2/2mil
Copper Thickness 0.33 OZ -15 OZ
Min. Pitch 0.35mm
Min. Board size 0.4 inch *0.4 inch
Max. Board size 23 inch *35 inch

Laminations

Blind&buired via <= 4 times lamination

HDI with laser via

1+n+1;1+1+n+1+1;2+n+2;3+n+3;4+n+4;5+n+5

Min. Laser drill 4mil(0.1mm)

Min. Mechanical

drill size

6mil(0.15mm)


Hole Registration

+/-3mil
PTH Hole Tol. +/-2mil
NPTH Hole Tol. +0/-2mil or +2/-0mil
Max aspect ratio 30:1

Depth Tol. Of

backdrill

+/-4mil
CounterSink 82° ,90°,120°,135°

Impedance Control

Single end +/-5 OHM(<=50 OHM),Advance +/-5%
Differential Pair

<=50 OHM +/-5 OHM , >50 ohm +/-10% , Advance

+/-5%

Outline size Tolerance +/-4mil
Outline location Tolerance +/-4mil
Min. Bow&Twist Advance 0.1%
Solder mask color

Green Glossy , Blue , green Matte , Red, Yellow

,White ,Purple

Min. Solder mask Birdge 4mil(Green), 5mil(other color)
Silkscreen Color White, Black,Yellow
Gold finger Bevelling Tol. +/-5°
Min. Resistance Test 10 OHM
MAX Insulation resistance Test 100 OHM
MAX Test Voltage 500V
MAX Test Currency 200mA

Benefits of Multilayer PCBs (compared to single or double-sided PCBs)
Higher assembly density
Smaller size (considerable savings on space)
Increased flexibility
Easier incorporation controlled impedance features.
EMI shielding through careful placement of power and ground layers.
Reduces the need for interconnection wiring harnesses (reduces overall weight)

What are Multilayer PCBs used for?
Multilayer PCBs are particularly useful in the aerospace industry because they take up little room and are lightweight. They can also be found in cell phone repeaters, heart monitors, x-ray equipment, fiber optic receptors, industrial controls, automotive industry, atomic accelerators, nuclear detection systems and space probes.
Multilayer PCBs are also utilized in applications where crosstalk levels—electric or magnetic disturbance affecting the signal of an adjacent circuit—must be minimized.

FASTPCBA is an Experienced Multilayer PCB Manufacturer
FASTPCBA has been producing Multilayer PCBs for over 20 years, our skilled team members have the knowledge and experience to handle your multilayer PCB needs. we have solved all types of problems with multilayer PCBs from various industries.

To speak to us about your project, contact FASTPCBA today!



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