HDI PCB Manufacturer
LZJPCB manufactures high-density interconnect PCBs with laser-microvia engineering, any-layer HDI capability, multilayer and rigid-flex options, controlled impedance and prototype-to-production support. Every order is released against one approved HDI structure, stackup, material set and inspection plan.
- Since 2006
- 50+ Engineers
- Any-Layer HDI
- 3 / 3 mil Trace / Space
HDI PCB Manufacturing Capabilities
Use the published factory limits for a first-pass screen. The quotation then locks the microvia architecture, sequential-lamination route, pad geometry, registration, impedance, material and verification plan for the exact part number.
| Qualification item | Controlled scope | Release evidence |
|---|---|---|
| HDI structure | Any-layer, multilayer and 2+N+2 project structures | Build drawing identifies buildup layers, core and lamination sequence. |
| Microvias | Laser-drilled interconnect geometry per approved structure | Finished via, capture pad, target land and fill requirement are quoted together. |
| Trace / space | 3 / 3 mil safe minimum | Copper weight, line class and etch compensation are fixed in DFM. |
| Layer count | 1–40 layer custom PCB capability | Routine and project-specific layer routes are identified before PO. |
| Thickness | 0.20–17.5 mm published PCB range | Finished thickness and each dielectric remain visible in the stackup. |
| Impedance | ±5% published capability | Approved geometry and coupon report scope follow the order plan. |
| Material | FR-4, high-Tg, RCC, Rogers, PTFE and hybrid systems | Exact material codes and lamination route are named in the offer. |
| Inspection | AOI, X-ray, 100% electrical test and project-defined microsection | The control plan names the checkpoints and supplied records. |
HDI Microvia & Interconnect Technologies
HDI reduces routing congestion by moving selected interconnects into laser microvias and controlled buildup layers. The manufacturing risk is managed through pad geometry, target alignment, sequential lamination, metallization and inspection—not by the word “HDI” alone.
Microvias & Laser Microvia Capabilities
Laser microvias connect adjacent buildup layers through a short controlled path. LZJPCB supports any-layer HDI and releases the exact microvia diameter, capture pad, target land, fill type and inspection plan for each build.
Finished microvia and dielectric depth match the approved buildup.
Capture pad, target land and annular allowance stay linked.
Cleaning, activation, copper deposition and fill route follow the traveler.
AOI, X-ray, electrical test and specified microsection confirm the interconnect.
Staggered Microvias
Staggered microvias offset the via locations between buildup layers. This keeps each laser via landing on a solid intermediate pad and reduces the direct vertical concentration found in aligned structures.
The stackup drawing identifies each microvia start, stop and horizontal offset.
The offset preserves trace escape, plane clearance and copper balance.
Target lands and layer-to-layer alignment are checked at every lamination stage.
Choose staggered geometry when the density target does not require direct vertical alignment.
HDI PCB Types & Structures
These four product forms come directly from the keyword map. Each one is qualified by its interconnect structure, layer stack, thickness, bend construction and reliability requirements.
Any-Layer HDI PCB
Any-layer HDI can route laser-microvia interconnects through multiple buildup layers under one controlled architecture. LZJPCB publishes any-layer capability; the quotation fixes the actual buildup, lamination sequence and via map.
Review capability limitsHDI Multilayer PCB
An HDI multilayer board adds laser microvias and high-density buildup layers to a multilayer core. Unlike a conventional through-hole multilayer board, its routing plan fixes the microvia start/stop layers and sequential-lamination stages.
Explore multilayer PCBThick & Thin HDI PCB
LZJPCB’s published PCB thickness range is 0.20–17.5 mm. A thick or thin HDI build still needs enough dielectric, copper and pad geometry for the selected microvia and mechanical requirement.
Compare PCB manufacturing optionsHDI Flex & Rigid-Flex PCB
LZJPCB manufactures flex, rigid-flex and HDI product structures. A combined HDI flex or rigid-flex build is released only with an approved rigid/flex stack, bend area, coverlay, microvia map and lamination route.
Explore rigid-flex PCBHDI PCB Design, Stackup & DFM
LZJPCB provides layout design and DFM support, including high-density routing feasibility, stackup, controlled impedance and manufacturing review. The released fabrication package keeps the customer-approved circuit revision aligned with the accepted HDI build.
HDI PCB Design & DFM Guidelines
Design the BGA escape, microvia map and buildup together. A DFM-ready package identifies which nets use laser microvias, which layers carry controlled impedance and which pads need fill or planarization.
HDI PCB Stackup & 2+N+2 Structures
A 2+N+2 stack uses two HDI buildup layers on each side of an N-layer core. The drawing must identify every core, prepreg or RCC layer, copper weight, laser-microvia pair, buried interconnect and sequential-lamination stage.
- Define the N-layer core and each outer buildup layer separately.
- Map laser microvias only between the approved adjacent layers.
- Keep buried-via drilling and plating inside the correct sub-build.
- Assign controlled-impedance structures to actual dielectric values and copper.
- Release the lamination sequence, finished thickness and coupon plan together.
HDI PCB Material Selection
Material selection must survive the planned lamination cycles and hold the dielectric, registration, impedance and thermal target. LZJPCB’s published range includes FR-4, high-Tg, RCC, Rogers, PTFE and hybrid material systems.
HDI PCB Applications
HDI is selected when component pitch, routing density, board area or interconnect performance exceeds a conventional through-hole multilayer approach. Each application below uses a different evidence and quality plan.
HDI PCB for Aerospace & Defense
Compact radar, communication, navigation and sensing hardware needs high-density interconnect, material traceability, controlled impedance and project-defined reliability evidence.
HDI PCB for Medical Devices
Medical electronics use HDI to fit dense processing, sensing and communication functions into compact assemblies. ISO 13485 supports supplier qualification; the customer specification defines product-level validation.
HDI PCB for Communication Devices
Routers, modules, gateways and network hardware use HDI for fine-pitch escape, dense interconnect and controlled high-speed or high-frequency structures.
HDI PCB for Smartphones & Wearable Devices
Smartphones and wearables need thin, compact boards with dense BGA or CSP escape and efficient interconnect. LZJPCB’s published PCB capability supports 0.3 mm BGA pitch and any-layer HDI.
HDI PCB Prototype & Quick Turn
Prototype the same HDI structure, microvia route, material family, copper and inspection logic intended for production. The quotation provides one fixed calendar ship date after DFM, material and lamination route approval.
Four gates for a quick-turn HDI prototype
A complete build package removes the sequential-lamination and microvia questions that stop HDI tooling.
Gerber or ODB++, stackup, microvia table, material, copper, thickness, impedance, BGA pitch and quantity.
Routing density, buildup, capture pads, registration, fill, lamination cycles and test coupons reviewed.
The offer states the accepted structure, material route, inspection, price and calendar ship date.
Prototype fabrication, AOI, X-ray, electrical test and specified microsection or impedance records completed.
HDI PCB Quality Control & Reliability
The HDI control plan follows the interconnect through material receipt, sub-build imaging, laser drilling, metallization, sequential lamination and final test. High-frequency performance and reliability evidence are added only when the order defines the method and acceptance limit.
Laminate, RCC, copper and internal-layer data match the released traveler.
Via location, opening, target land and registration receive controlled inspection.
The released process checks copper formation and the specified filled-via condition.
Each buildup stage keeps dielectric thickness and layer alignment within the approved plan.
Internal features and hidden interconnects use the inspection methods named on the order.
Every board receives electrical test; specified impedance evidence follows the coupon plan.
Why Choose Us as Your HDI PCB Manufacturer
The reason to choose an HDI supplier is not a longer capability list. It is whether the approved microvia architecture stays controlled from engineering release through lamination, laser processing and final evidence.
Controlled Microvia Engineering from Feasibility Review to Verified Production
HDI reliability depends on carrying one approved buildup, microvia map and evidence plan through every stage—not on handing the job from sales to production as separate interpretations.
Engineering fixes the buildup, laser-via start and stop layers, pad geometry, material, impedance and inspection scope before tooling.
The traveler keeps each sub-build, sequential-lamination stage, laser target and metallization route tied to that release.
AOI, X-ray, 100% electrical test and specified microsection or impedance records close the same control loop.
HDI PCB Case Studies
A valid HDI case study states the structure, layer count, microvia geometry, stackup, material, trace/space, impedance, manufacturing risk, inspection and measured result. These modules are reserved for customer-approved project records.
Publish an approved project with dense BGA escape, controlled impedance and documented microvia evidence.
Publish only after the customer authorizes the project data.
Publish an approved medical device project with material traceability and specified reliability evidence.
Publish only after the customer authorizes the project data.
Publish an approved combined structure with a defined bend area, microvia map and lamination route.
Publish only after the customer authorizes the project data.
HDI PCB Cost
HDI PCB price is calculated from the released structure and process route. The main cost drivers are buildup complexity, sequential lamination, laser drilling, via treatment, material, fine-line class, quantity and required evidence.
Eight cost drivers purchasing can control
Give every supplier the same inputs so quotations describe equivalent HDI constructions.
Do not remove quality gates or relabel an unmanufacturable design as “cheap HDI.” Cost reduction starts by simplifying the buildup while preserving routing and reliability.
- Use the fewest sequential lamination cycles that complete the routing.
- Keep microvia layer pairs and fill requirements explicit.
- Panelize the released outline for material utilization.
- Quote prototype and annual volume in the same RFQ.
HDI PCB Manufacturing Process
The HDI process repeats imaging, lamination and laser-microvia formation around the approved buildup. The traveler keeps every sub-build, target layer and inspection checkpoint tied to the released stackup.
Materials, stackup, microvia pairs, copper, impedance and test plan are frozen.
Internal core layers are imaged, etched and inspected before sub-build lamination.
Specified buried drills, plating and core preparation are completed inside the sub-build.
Buildup dielectric and copper are pressed under the approved material cycle.
Laser drilling exposes the target land on the approved adjacent layer pair.
Microvias follow the released desmear, copper deposition and fill requirement.
Additional HDI layers repeat imaging, lamination and microvia formation as specified.
Surface finish, profile, AOI, X-ray, electrical test and project reports complete release.
HDI PCB Assembly
LZJPCB supports HDI bare-board fabrication and high-density assembly under one revision-controlled package. Published PCBA capability includes 01005 components, 0.35 mm BGA, POP stacking, AOI, X-ray and 3D SPI.
Fine-pitch assembly with hidden-joint inspection
Keep the approved bare-board revision, BOM, placement, stencil, solder profile, cleaning and test plan under the same release.
- BGA, CSP and via-in-pad areas use the released pad and surface-finish construction.
- 3D SPI checks solder paste before high-density component placement.
- AOI checks visible joints; X-ray checks BGA and other hidden connections.
- POP and fine-pitch packages follow the approved component and thermal profile.
- Functional test coverage, fixture and acceptance limits are agreed before the lot.
Get an HDI PCB Quote
Send one complete data package. The returned quotation states the accepted HDI structure, microvia route, stackup, material, inspection, quantity price and fixed calendar ship date.
Inputs required for a costed HDI build
These inputs remove the open assumptions that cause supplier quotations to describe different boards.
- Gerber / ODB++ and NC drill files
- Layer count and HDI structure
- Microvia start/stop layers and finished geometry
- Via-fill, cap and planarization requirements
- Material code, Tg and finished stackup
- Board thickness and copper weight
- Controlled-impedance table and tolerance
- BGA / CSP pitch and critical routing class
- Prototype and annual production quantities
- Microsection, X-ray, impedance and reliability evidence
- BOM, CPL and test requirements when assembly is included
Accepted HDI build, material set, tooling, inspection plan, quantity price breaks and one fixed calendar ship date.
Frequently Asked Questions About HDI PCB
Short definitions for structure selection without turning the commercial page into a general encyclopedia.
What Is an HDI PCB?
HDI means High-Density Interconnect. An HDI PCB uses laser microvias, fine routing and controlled buildup layers to place more interconnects in less board area than a conventional through-hole board. The fabrication package must identify its microvia layer pairs, stackup and sequential-lamination route.
How Is HDI PCB Different from a Conventional Multilayer PCB?
A conventional multilayer PCB can rely primarily on mechanically drilled through holes. An HDI multilayer PCB adds laser microvias, buildup dielectrics and sequential lamination to increase routing density and support finer-pitch packages.
| Decision | Conventional Multilayer PCB | HDI PCB |
|---|---|---|
| Primary interconnect | Mechanical through holes and buried vias | Laser microvias plus controlled buildup layers |
| Routing density | Standard multilayer routing | Higher-density BGA and CSP escape |
| Lamination route | One standard multilayer press route where practical | Sequential lamination by released buildup stage |
| Inspection focus | Layer registration, drilling, plating and electrical test | Microvia targets, fill, registration, X-ray or microsection and electrical test |
| Best fit | Designs completed without HDI buildup | Compact designs whose package escape or interconnect density needs microvias |
When Should You Use Any-Layer HDI PCB?
Use any-layer HDI when BGA escape and interconnect density cannot be completed with a lower-complexity buildup. Any-layer capability allows microvia routing across multiple buildup layers, but it also adds lamination, alignment, laser and inspection work. Choose it only when the routing and package architecture need that freedom.
Send the Gerber, stackup, HDI structure, microvia table, material, thickness, impedance, quantity and test requirements.