6-Layer PCB
6-Layer PCB
The High-Speed Sweet Spot
Dual ground planes for superior signal integrity. The go-to layer count for DDR4, USB 3.x, GbE, and mixed analog/digital designs. Impedance controlled, TDR verified.
[ Photo: 6-layer PCB board / cross section ]
Standard 6-Layer Stackup Options
Option A: Signal-Heavy (S/G/S/S/P/S)
Maximum routing space. 4 signal layers.
Option B: EMI-Optimized (S/G/S/P/G/S)
Dual reference planes. Best for mixed-signal.
Custom stackups available for specific impedance or application requirements.
Why 6 Layers?
[ Photo: 6-layer board with DDR routing visible ]
[ Photo: 6-layer cross section showing copper layers ]
When to upgrade from 4 to 6 layers:
- DDR4/DDR5 memory interfaces requiring matched-length differential pairs
- USB 3.0+ with dedicated ground reference for signal layers
- Mixed analog/digital designs needing isolated ground planes
- Designs where 4-layer routing becomes impossible without vias everywhere
- EMI-sensitive applications requiring continuous reference planes
FAQs
6-Layer PCB Questions
How much does a 6-layer PCB cost vs 4-layer?
Approximately 30-50% more than 4-layer for the same board dimensions. The premium covers additional lamination cycles and material. Exact pricing available instantly in our quote tool.
What is the standard thickness for 6-layer?
1.6mm is standard. Available from 0.8mm to 2.4mm. Impedance calculations adjust automatically for your chosen thickness.
Can I mix signal types across layers?
Yes. A common approach is high-speed digital on L1/L3 with analog on L6, using the ground planes for isolation. Our engineers can recommend optimal layer assignment.
What is the lead time?
7-8 days standard, 5 days express. Impedance-controlled 6-layer with TDR report is our most common order type.
Need a 6-layer board?
Instant pricing with impedance control. 7-day standard delivery.