PCB fabrication services · Custom bare boards
PCB Fabrication Services: Custom Bare Boards, 1 to 30 Layers
Custom PCB fabrication from 2-layer prototypes to 30-layer HDI on Megtron, Rogers, polyimide and copper-core metal boards, with written DFM before every build.
- Layers
- 1–30
- Thickness
- 0.2–6.0 mm
- Copper
- 0.5–10 oz
- Max. board
- 580×700 mm
What is PCB fabrication
PCB fabrication, explained.
PCB fabrication is the manufacture of the bare printed circuit board from design data: imaging and etching copper, laminating layers, drilling and plating holes, then solder mask, surface finish and electrical test. Assembly, which mounts the components, comes afterwards.
AstroPCB fabricates the full range of constructions, from single-layer copper-core LED boards to 30-layer HDI boards on Megtron 7. Every job starts with a DFM review against the tolerances of the line that will build it.
Why AstroPCB
Why AstroPCB for PCB fabrication services.
PCB fabrication services are only as good as the engineering behind the CAM file. We confirm stack-up, material availability, lamination sequence and impedance before tooling, so the first build is the right build.
- Every construction: rigid, HDI, flex, rigid-flex, RF and copper-core metal boards
- Material sourcing across 30+ partner factories
- Engineering since 2008: 1,000+ engineers and 30+ partner factories in Shenzhen, Xi’an, Chengdu and Hangzhou
- Written DFM review on every order, prototype or production, before fabrication starts
- 99.6% on-time delivery across the partner factory network
- From 1 piece to volume with the same stack-up and process controls
- IPC Class 2 by default, Class 3 on request, with inspection records and batch traceability
- Fabrication plus assembly: component sourcing, SMT and tracked worldwide shipping
Specifications
PCB fabrication specifications.
| Parameter | Capability |
|---|---|
| Layer count | 1 to 30 |
| Board thickness | 0.2–6.0 mm (±10% standard) |
| Copper weight | 0.5 oz (17 µm) to 10 oz (350 µm) |
| Min. line / space | 50 / 50 µm |
| Min. drill | 0.10 mm mechanical; 75 µm laser |
| Hole position | ±2 mil |
| HDI | Up to 7 build-up cycles; stacked microvias 2–3 levels |
| Max. board size | 580 × 700 mm |
| Impedance | ±8% with Polar field-solver modeling and TDR coupons |
| Surface finishes | HASL, lead-free HASL, ENIG, ENEPIG, immersion silver/tin, OSP, hard gold |
| Test | 100% electrical test (flying probe or fixture); hi-pot on request |
| Standard | IPC-6012 Class 2 default, Class 3 on request |
Materials
Laminates we fabricate.
| Class | Examples | Use |
|---|---|---|
| Standard FR-4 | Shengyi S1141, Kingboard KB-6160 (Tg 130–140 °C) | General electronics |
| High-Tg FR-4 | Isola 370HR, Shengyi S1000-2M (Tg 180 °C) | Automotive, industrial, lead-free |
| Low / ultra-low loss | Isola FR408HR, Megtron 4/6/7 | High-speed digital, 56–112G |
| RF / PTFE | Rogers RO4350B, RO4003C, RT/duroid 5880 | RF to mmWave |
| Flex | Polyimide (adhesiveless / adhesive) | Flex and rigid-flex |
| Thermal | Copper core, thermoelectric separation, copper coin | LED, power |
Process
How PCB fabrication works.
CAM & DFM
Data checked, stack-up confirmed, panel designed.
Inner layers
Imaging, etching, AOI, oxide.
Lamination & drill
170–190 °C press cycles; mechanical and laser drilling.
Plate, finish, test
Copper plating, mask, finish, electrical and impedance test.
The full sequence is explained on PCB manufacturing.
Custom PCB
Custom PCB fabrication from a custom PCB manufacturer.
As a custom PCB manufacturer we build to your drawing, not a catalogue: mixed-dielectric stack-ups, cavities, edge plating, back-drilling, selective finishes, heavy-copper power layers and odd outlines. State the requirement in the fabrication notes and we confirm feasibility during DFM.
- Hybrid Rogers / FR-4 stack-ups — high frequency PCB
- Heavy copper to 10 oz — heavy copper
- Blind, buried and back-drilled vias — blind & buried vias
- Selective ENIG + hard gold fingers — surface finish
Near me
Searching for PCB fabrication near me?
If you are looking for “PCB fabrication near me”, what you usually need is fast engineering answers and fast delivery. We offer US-hours engineering overlap, 24-hour rush fabrication for eligible designs and 3–5 day express delivery to US addresses. See PCB manufacturer for USA customers and quick turn PCB.
RFQ
What to send for a fabrication quote.
- Gerber RS-274X / X2, ODB++ or IPC-2581
- Excellon drill files and board outline
- Fabrication drawing with stack-up, material and tolerances
- Impedance table
- Finish, IPC class and quantity
- Panel requirements if assembling
FAQ
PCB fabrication questions.
What is the difference between PCB fabrication and PCB assembly?
Fabrication makes the bare board; assembly solders components onto it. AstroPCB does both — see PCB assembly.
What file formats do you accept?
Gerber RS-274X (preferred), Gerber X2, ODB++ and IPC-2581, plus Excellon drill files, outline and a fabrication drawing.
What is the maximum board size?
580 × 700 mm (about 23 × 28 in). Larger panels can be discussed.
Do you offer controlled impedance fabrication?
Yes, to ±8% with field-solver modeling and TDR coupons; reports are included.
Is every board electrically tested?
Yes. 100% electrical test by flying probe or fixture; high-voltage isolation testing on request.
Can you fabricate custom, non-standard boards?
Yes — hybrid stack-ups, heavy copper, cavities, edge plating, back-drilling and selective finishes are reviewed in DFM.
Ready when your files are
Upload your files for a custom PCB fabrication quote.
Upload Gerber, ODB++ or IPC-2581 data. Every quote includes a written engineering DFM review, typically within one business day.