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JLCPCB can produce High-precision multilayer board with capabilities listed in below table.
| Min. Trace width/Spacing | Min. Via | Min. BGA |
|---|---|---|
| 3.5mil | 0.2mm | 0.3mm |
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 type | Dielectric constant |
|---|---|
| 7628 | 4.6 |
| 2313 | 4.05 |
| 2116 | 4.25 |
2.Solder mask Parameters
| Solder mask thickness over the laminate | Solder mask thickness over traces | Solder mask dielectric constant |
|---|---|---|
| 0.8mil | 0.5mil | 3.8 |
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
a) JLC7628 Stackup:
| Layer | Material Type | Thickness | |
|---|---|---|---|
| Top Layer1 | Copper | 0.035 mm | |
| Prepreg | 7628*1 | 0.2 mm | |
| Inner Layer2 | Copper | 0.0175 mm | 1.1mm (with copper core) |
| Core | Core | 1.065 mm | |
| Inner Layer3 | Copper | 0.0175 mm | |
| Prepreg | 7628*1 | 0.2 mm | |
| Bottom Layer4 | Copper | 0.035 mm |
b) JLC2313 Stackup:
| Layer | Material Type | Thickness | |
|---|---|---|---|
| Top Layer1 | Copper | 0.035 mm | |
| Prepreg | 2313*1 | 0.1 mm | |
| Inner Layer2 | Copper | 0.0175 mm | 1.3 mm (with copper core) |
| Core | Core | 1.265 mm | |
| Inner Layer3 | Copper | 0.0175 mm | |
| Prepreg | 2313*1 | 0.1 mm | |
| Bottom Layer4 | Copper | 0.035 mm |
6-Layer Impedance Control Stackup
Thickness
b) JLC2313 Stackup:
| Layer | Material Type | Thickness | |
|---|---|---|---|
| Top Layer1 | Copper | 0.035 mm | |
| Prepreg | 2313*1 | 0.1 mm | |
| Inner Layer2 | Copper | 0.0175 mm | 0.6 mm (with copper core) |
| Core | Core | 0.565 mm | |
| Inner Layer3 | Copper | 0.0175 mm | |
| Prepreg | 2116*1 | 0.127 mm | |
| Bottom Layer4 | Copper | 0.0175 mm | 0.6 mm (with copper core) |
| Core | Core | 0.565 mm | |
| Inner Layer5 | Copper | 0.0175 mm | |
| Prepreg | 2313*1 | 0.1 mm | |
| Bottom Layer6 | Copper | 0.035 mm |
Note: The 6-Layer board temporarily only provides JLC2313 Stackup.
JLCPCB(Shenzhen JLC Electronics Co., Ltd.), is the largest PCB prototype enterprise in China and a high-tech manufacturer specializing in quick PCB prototype and small-batch PCB production. With Over 10 years of PCB manufacturing experience, we’re able to provide cost effective solutions that deliver the highest reliability PCB products to customers faster.
