HDI & Microvias

Cross-section diagram of a 6-layer 2-stage HDI headphone PCB with a 2+2+2 stackup and stacked laser microvia chains

Headphone PCB: 6-Layer 2-Stage HDI for TWS and Audio Design

Cross-section diagram of a 6-layer 1-stage HDI rearview mirror PCB with a 1+4+1 stackup, laser blind microvias and a plated through-hole

Rearview Mirror PCB: 6-Layer 1-Stage HDI Stackup and Specs

Cross-section of a 6-layer 1-stage HDI kids smartwatch PCB with laser blind vias L1-L2 and L5-L6, a buried via and a PTH

Kids Smartwatch PCB: Proven 6-Layer HDI Stackup and Specs

Spectrum diagram comparing line and space of standard PCB, HDI PCB, substrate-like PCB and IC substrate

Substrate-Like PCB (SLP): mSAP Process, L/S Limits and 5 Proven Uses

Cross-section of a 16-layer 2-stage HDI PCB stackup showing stacked laser microvias on both faces, buried vias inside the core and one through hole

16-Layer 2-Stage HDI PCB: What a CAM Review Changes Before Production

HDI PCB vs standard PCB cross-section: a 4-layer through-hole board versus a 4-layer 1-stage HDI board with laser blind microvias

HDI PCB vs Standard PCB: 6 Best Stackup, Routing and Cost Answers

Eight-layer any-layer HDI stackup with stacked, filled and capped laser microvias on every adjacent layer pair — laser taper wide end up above the core and wide end down below it, 0.1 mm core with prepreg bonds

Any-Layer HDI Explained: ELIC Stackup, Process Flow and When to Use It

Diagram comparing PCB aspect ratio examples of 4 to 1, 8 to 1 and 12.8 to 1 on boards of different thickness

PCB Aspect Ratio Explained: Hole Size, Plating Throw and Design Limits

Via-in-Pad Technology for HDI and BGA Boards: Process and Rules

Stacked vs Staggered Vias in HDI PCB: Structures, Cost and Yield

10-Layer 3-Stage HDI Stackup: Standard and Simplified Builds

Copper Filled Vias: Via Filling Plating Process and Design Rules

Four cross-section photos of blind vias with copper filling voids of different shapes

Plating Voids in Microvias: Root Causes and How Factories Fix Them

Eight-layer 3-stage HDI cross-section with stacked laser blind microvias drilled from both outer surfaces, a buried via through the core and a plated through hole

Blind and Buried Via HDI: Cross Via Structures for High-Density PCBs

Cross section diagram of any-layer HDI with funnel-shaped laser blind vias stacked on landing pads, entries opening upward from the top surface and downward from the bottom surface, next to a mechanical through-hole

Why Advanced HDI PCB Manufacturing Is Hard: Microvias, Yield and Cost

Six checkpoints from Gerber and stackup review to electrical test and AOI for an HDI panel, each producing a document a buyer can request

HDI PCB Manufacturer: How to Read a Factory’s Real Capability

Cross-section diagrams comparing 1-stage, 2-stage and 3-stage HDI stackups, with a legend for cores, prepreg, stacked laser microvias, buried vias and plated through holes

HDI Stages Explained: 1-Stage, 2-Stage and 3-Stage PCB Stackups

998 PCB Group Industrial Park Aerial View

998 PCB Group: Shenzhen HDI & Multilayer PCB Manufacturer

What is an HDI PCB