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JLCPCB will have 3 day's holiday from Oct 1st to Oct 3rd. Orders can be placed online during the holidays and will be processed on Oct 4th. Please kindly schedule your orders ahead of time.

Multilayer high precision PCB’s with impedance control

JLCPCB can produce High-precision multilayer board with capabilities listed in below table.

Min. Trace width/SpacingMin. ViaMin. BGA
3.5mil0.2mm0.3mm

It is very convenient for customers to conduct impedance matching design according to JLCPCB’s laminated structure and related parameters. The PCB will be produced in accordance with the following stackup strictly.

Controlled Impedance PCB Parameters and Stackup

1.Prepreg dielectric constant:

Prepreg typeDielectric constant
76284.6
23134.05
21164.25

2.Solder mask Parameters

Solder mask thickness over the laminateSolder mask thickness over tracesSolder mask dielectric constant
0.8mil0.5mil3.8

For your convenience, we have designed a Impedance Calculator to help you calculate the impedance and trace width you need.

4-Layer Impedance Control Stackup

Thickness

0.8mm1.0mm1.2mm1.6mm2.0mmCurrent layer:4-layer

a) JLC7628 Stackup:

LayerMaterial TypeThickness
Top Layer1Copper0.035 mm
Prepreg7628*10.2 mm
Inner Layer2Copper0.0175 mm1.1mm (with copper core)
CoreCore1.065 mm
Inner Layer3Copper0.0175 mm
Prepreg7628*10.2 mm
Bottom Layer4Copper0.035 mm

b) JLC2313 Stackup:

LayerMaterial TypeThickness
Top Layer1Copper0.035 mm
Prepreg2313*10.1 mm
Inner Layer2Copper0.0175 mm1.3 mm (with copper core)
CoreCore1.265 mm
Inner Layer3Copper0.0175 mm
Prepreg2313*10.1 mm
Bottom Layer4Copper0.035 mm

6-Layer Impedance Control Stackup

Thickness

1.2mm1.6mm2.0mmCurrent layer:6-layer

b) JLC2313 Stackup:

LayerMaterial TypeThickness
Top Layer1Copper0.035 mm
Prepreg2313*10.1 mm
Inner Layer2Copper0.0175 mm0.6 mm (with copper core)
CoreCore0.565 mm
Inner Layer3Copper0.0175 mm
Prepreg2116*10.127 mm
Bottom Layer4Copper0.0175 mm0.6 mm (with copper core)
CoreCore0.565 mm
Inner Layer5Copper0.0175 mm
Prepreg2313*10.1 mm
Bottom Layer6Copper0.035 mm

Note: The 6-Layer board temporarily only provides JLC2313 Stackup.

 


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