High-density boards now ship inside phones, automotive radar modules, wearables and handheld medical devices, and the purchasing question has moved from whether to use HDI to why two quotes for the same 60 × 40 mm outline differ by a factor of three. The gap rarely comes from a supplier’s rate card. Every HDI PCB manufacturer prices the stackup, the via fill and the panel, so a quote only means something once you know which of those you asked for.
In 2026 an HDI board typically runs $28–42 per piece for a 6-layer 1+N+1 build at five pieces, $55–85 for a 10-layer 2+N+2 staggered build, and $250–400 for a 16-layer 4+N+4 stacked build; at 500 pieces the same builds fall to roughly $7–11, $16–24 and $72–110, quoted on a 100 × 100 mm board in Tg170 FR-4 with ENIG finish and 1 oz copper.
What follows separates that number into its parts: the price of each stackup, the process steps behind the premium, and what to send so a quote comes back usable.
What HDI PCBs cost in 2026
Published 2026 fabricator price tables put HDI PCB at roughly two to three times the cost of a through-hole board at prototype volume, and the multiple stays above two times at 500 pieces, because sequential lamination and laser drilling stay in the process regardless of order size.
Figures come from fabricator price tables published in 2026 and checked on 19 October 2026, on a baseline of 100 × 100 mm, Tg170 FR-4, 1 oz copper and ENIG finish, with no impedance control.
Price by build-up and order quantity
| Structure | Build-up | 5 pcs | 50 pcs | 500 pcs |
|---|---|---|---|---|
| 6 layers, through-hole | none | $12–18 | $6–9 | $3–5 |
| 6 layers | 1+N+1 | $28–42 | $14–20 | $7–11 |
| 8 layers | 1+N+1 | $35–55 | $18–28 | $9–14 |
| 10 layers | 2+N+2, staggered | $55–85 | $32–48 | $16–24 |
| 10 layers | 2+N+2, stacked VIPPO | $90–140 | $52–78 | $28–40 |
| 12 layers | 3+N+3, staggered | $120–180 | $65–95 | $35–52 |
| 16 layers | 4+N+4, stacked | $250–400 | $130–200 | $72–110 |
The first row is a through-hole board of the same size, so the row under it isolates the HDI premium at two to two and a half times. The two 10-layer rows show the other lever: same layer count, same outline, a 40 to 60 percent gap between stacked via-in-pad and staggered builds. Volume helps but never removes the premium. A per-piece figure is also not the invoice: at 20 pieces an 8-layer 1+N+1 build lands near $24–34 plus $200–500 of NRE, so engineering can be a third of a small order.
What is HDI for PCB?
HDI stands for high-density interconnect, and it describes a board built with laser-drilled microvias and sequential lamination, so that layer-to-layer connections use holes of 0.15 mm or less instead of mechanical through-holes that consume routing space on every layer they pass through.
A fine-pitch BGA escapes on board area a through-hole design cannot use, so the same function fits in less space and often in fewer layers. HDI is a geometry claim, not a marketing one, and the IPC-2226 definition of a microvia sets the terms: a blind hole no larger than 150 µm across, a pad no larger than 350 µm, 0.25 mm deep or less, at an aspect ratio of 1:1 or lower.
| Parameter | Common HDI threshold |
|---|---|
| Microvia diameter | 0.15 mm or less, 0.075–0.1 mm in volume |
| Microvia capture pad | 0.35 mm or less |
| Microvia depth | 0.25 mm or less |
| Microvia aspect ratio | 1:1 or lower, 0.75:1 typical |
| Line width and spacing | 0.1 mm (4 mil) or finer, down to 3/3 mil |
| Connection pad density | above 20 pads per cm² |
Each threshold is a process capability with a price band attached. Moving from 4/4 mil to 3/3 mil line width needs finer imaging and etching and gives up yield; dropping the laser via from 0.1 mm to 0.075 mm narrows the plating window. When a quote comes back high, the cause is usually one line in the stackup drawing.
Build-up naming: 1+N+1, 2+N+2 and any-layer
The naming counts microvia layers on each side of the core, and N is the core layer count.
- 1+N+1: one microvia layer per side, one lamination cycle. Common on 4 to 8 layer industrial boards.
- 2+N+2: two per side, two cycles. Standard for automotive and communications modules.
- 3+N+3 and above: three or more per side, for high pin-count processors and computing boards.
- Any-layer: every layer pair joined by microvias, no through-hole core. Highest freedom and cost, mostly phones and advanced modules.
Each step adds a press cycle, a laser program and another set of tolerances. The ladder is even because you are buying cycles, not area.
Why an HDI board costs more than a standard multilayer board
The premium comes from process steps rather than raw material: every build-up layer adds a lamination cycle, a laser drill program, a via fill and planarisation step, and fresh alignment tolerances, so the panel passes through the line three or four times instead of once.
- Sequential lamination. A 2+N+2 board is pressed, drilled and plated, then pressed again with the next dielectric. Each cycle costs press time and risks misregistration.
- Laser drilling and via fill. Microvias are formed by UV or CO₂ laser, then filled and planarised when the via sits in a pad. These slow plating and grinding steps explain the 40 to 60 percent gap between stacked and staggered builds.
- Non-recurring engineering. Drill files, imaging tools, fixtures and first-article checks are charged once, which is why five pieces look expensive.
- Yield. Fine lines, small vias and repeated cycles reduce good boards per panel, and the fab prices the scrap as well as the units that ship.
How much does a PCB usually cost?
A standard two-layer board is cheap because it is drilled once and laminated once: public quick-turn quoting pages list two-layer FR-4 prototypes from about $5 for five pieces, flex and rigid-flex from about $69, high-frequency laminate from about $196, and HDI PCB from about $265, checked on 19 October 2026.
The $5 board has one drill cycle, no laser, no impedance control and a panel that fills easily. The $265 board has multiple lamination cycles, laser-drilled microvias, filled vias and tighter tolerances, with first-piece engineering spread over five units.
Standard boards as a baseline
The standard price sets the floor your business case has to beat, and that floor is low. The panel economics are the same at both ends, though: outline size, panel utilisation and finish move a standard board price as much as an HDI one. A supplier that quotes both technologies on the same panel rules and inspection classes makes the comparison honest, which is why some teams send one package to a custom PCB manufacturing partner and ask for two builds of one design.
The premium is per board, not per square centimetre
Per-area comparisons mislead. HDI PCB runs roughly $1.20–5.00 per cm² against $0.10–1.50 per cm² for standard multilayer, which sounds like a tenfold penalty. But HDI PCB designs typically occupy 20 to 40 percent less area for the same function. A 40 cm² HDI board at $2.50 per cm² costs $100; the 60 cm² standard board it replaces at $1.20 per cm² costs $72 and may still need a second assembly. Compare total cost, not the rate.
Which design choices move the quote the most
Build-up depth and via fill method sit at the top: at the same layer count, a stacked via-in-pad build costs 40 to 60 percent more than a staggered build, and the choice between 4/4 mil and 3/3 mil line width can move a quote as much again before any material change.
Build-up depth, stacked or staggered
Ask what the design needs. If one signal travels from the top layer to the fourth, a dog-bone fanout to a through-hole via may remove a lamination step. If the finest-pitch part is a single 0.5 mm BGA, a standard board with filled via-in-pad may need no HDI PCB at all. Where HDI PCB is required, staggered microvias give the same connectivity at 60 to 70 percent of the via cost, if the pitch allows the offset.
Line width, laser via size and via-in-pad
Line width is a capability step, not a continuum. A 4/4 mil design runs on standard imaging; 3/3 mil needs finer exposure and etching and gives up yield. The laser via is the same: 0.1 mm is routine, 0.075 mm is a narrower window. Via-in-pad adds fill and planarisation, and stacking adds a plating step per layer.
Panel utilisation and board outline
HDI PCB panels are processed whole regardless of board size, so utilisation decides how much overhead each unit carries. A 50 × 50 mm board may yield four to six units per panel; a 180 × 120 mm board one or two. Below about 50 percent utilisation, shrinking the outline is real money; above roughly 250 × 200 mm, a 15 to 25 percent waste factor gets added.
Material and surface finish adders
| Change from the baseline build | Effect on price |
|---|---|
| Low-Dk, PTFE or hydrocarbon core layers | 20–30 percent on material, more on mixed stackups |
| Immersion silver or ENEPIG instead of ENIG | 10–15 percent |
| Halogen-free laminate | 10–20 percent |
| 2 oz or 3 oz outer copper | Priced per copper weight step |
| Backdrill, countersink or step hole | Extra drilling and inspection operation |
| Impedance control with test report | Priced per coupon and per batch |
None of these is large alone. Two or three together, on top of a 3+N+3 stackup, is how a quote doubles while the outline stays the same.
How order quantity and lead time change the price
The steepest drop happens between five and fifty pieces, because non-recurring engineering of roughly $200–500 gets spread across more units; from 50 to 500 the curve flattens and the remaining gains come from panel yield and material purchasing rather than engineering.
Prototype and production orders should be quoted separately, because a prototype price says little about production. The same 10-layer 2+N+2 staggered build falls from $55–85 at five pieces to $16–24 at 500, about 70 percent, while NRE stays constant. Lead time pushes the other way: an expedited order pays for a press slot, separate drill programming and priority inspection, and costs more than expediting a standard board. If the schedule allows two to three weeks for a multi-cycle build, take it.
What to send for an accurate HDI quote
A quote is only as good as the stackup drawing behind it, so send the Gerbers, the build-up with via types, the laser via diameter and fill requirement, the material and Tg, the finish, the impedance targets, the panel method, the quantity, the lead time and the inspection class in one package.
Missing items get filled with conservative assumptions, and conservative assumptions cost money: a fabricator that does not know your fill requirement quotes a build that guarantees it, and you pay for margin you did not need.
- Gerber or ODB++ data, plus the CAD file if DFM review is offered.
- Stackup drawing with layer count, dielectric thickness and build-up notation, for example 10 layers 2+N+2.
- Via schedule: layers joined, laser drill diameter, stacked or staggered, and whether fill and planarisation are required.
- Line width and spacing, minimum annular ring, and impedance nets with target values and tolerance.
- Laminate type and Tg, plus any halogen-free, low-Dk or high-CTI need.
- Surface finish and thickness, gold finger spec, solder mask colour.
- Panel method: single pieces, panel by customer or panel by fabricator, with edge rail and fiducials.
- Quantity, delivery date and inspection class, IPC Class II or III, with the reports you expect.
Ask for a fixed quote format: unit price, NRE, test and fixture charge, panel quantity, lead time, validity. A supplier that will not break out NRE is quoting a number you cannot compare.
FAQ
Why do HDI quotes expire so quickly?
HDI PCB prices track laminate and copper foil purchasing, currency and press capacity more closely than standard prices, because materials are bought in smaller volumes. Thirty days is a normal validity, and a longer hold usually carries a condition such as a quantity commitment. If your release is far out, keep the quote basis on file and re-price at order.
Is an impedance test report included in the quoted price?
Usually not. Impedance control is quoted as a process option, and the report is charged per coupon and per batch, with sampling rates that differ between IPC Class II and III. If the design has impedance nets, state target values, tolerance and coupon count, and ask for the test charge as a separate line.
Can a 1+N+1 quote be used to budget a 2+N+2 design?
No. Each additional build-up layer adds a press cycle, a laser program and a fill step, and the price moves to the next rung: a 6-layer 1+N+1 board at five pieces quotes at $28–42, and a 10-layer 2+N+2 staggered board of the same size at $55–85. Budget from a quote for the actual stackup, or ask for both builds so the difference is visible before the layout is frozen.
