8 Layer HDI PCB Production Record #HDI-20260410-032
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| PCB Type | HDI PCB | Quantity | 375 pcs |
| Layers | 8 Layers | Board Type | Panel PCB |
| Dimensions | 22 x 32.5 mm | Copper Weight | 1oz |
| Thickness | 0.8 mm | Min Track / Spacing | 4/4mil |
| Surface Finish | ENIG (Immersion Gold) | Min Hole Size | 0.15mm |
| Solder Mask | Green | Silkscreen | None |
This manufacturing record covers the production of 375 panels of an 8-layer HDI PCB, each measuring 22 × 32.5 mm and built to a thin 0.8 mm finished thickness with a custom stackup incorporating blind vias. The design called for 4/4 mil minimum trace and spacing on 1 oz copper layers, 0.15 mm minimum holes, green soldermask, and immersion gold ENIG surface finish. With no silkscreen specified, production focused on the multilayer lamination and via formation processes.
We conducted engineering review and material preparation before inner layer imaging and precise circuit etching. Particular care was taken during layer stack alignment and high-pressure lamination to ensure reliable registration for the blind vias within the thin 8-layer construction. Solder mask application, electroless nickel deposition, immersion gold deposition, batch AOI inspection, and final electrical testing verified performance across the full batch.
The 44.6-day production schedule accommodated the sequential build steps required by this custom thin-board configuration, resulting in consistent dimensional accuracy and electrical reliability in every delivered panel.
These boards integrate multiple microvia layers to support complex routing and high signal density in advanced electronics.
Senior PCB manufacturing engineer shares real factory insights on common engineering queries for multilayer HDI PCBs including 4 Layer HDI PCB, 6 Layer HDI PCB, 8 Layer HDI PCB, and 10 Layer HDI PCB. Learn about microvia stacking, registration challenges, impedance control, and practical DFM tips to reduce EQs and improve production yield.
| Order ID | PCB Type | Layers | Dimensions | Solder Mask | Surface Finish | Quantity | Action |
|---|---|---|---|---|---|---|---|
| HDI-20260530-027 | HDI PCB | 18 | 22 x 14 | Green | ENIG (Immersion Gold) | 200 | View detail |
| HDI-20260526-028 | HDI PCB | 10 | 80 x 80 | Green | ENIG (Immersion Gold) | 250 | View detail |
| HDI-20260512-016 | HDI PCB | 4 | 63.5 x 127 | Green | ENIG (Immersion Gold) | 10 | View detail |
