Navigating PCB Fabrication Capabilities
The shift towards rapid prototyping has revolutionized hardware. Services like JLCPCB, PCBWay, and OSH Park allow engineers to receive 4-layer boards in under a week.
Standard capabilities for budget fab houses typically include 6/6 mil trace/space and 0.3mm drill sizes. Pushing beyond these specifications incurs significant premium charges.
Key Specifications Data
| Specification | Budget Standard (e.g. JLCPCB) | Advanced (e.g. Sierra Circuits) |
|---|---|---|
| Min Trace/Space | 6 mil / 6 mil | 3 mil / 3 mil (or less) |
| Min Drill Size | 0.3 mm | 0.15 mm (laser microvias) |
| Layers | 1-6 layers typically | Up to 32+ layers |
Frequently Asked Questions
What are Gerber files?
The standard industry file format (RS-274X) used to communicate the copper layers, soldermask, and silkscreen to the manufacturer.
What is ENIG vs HASL?
Surface finishes. HASL is cheaper but uneven. ENIG (Electroless Nickel Immersion Gold) is flat, excellent for fine-pitch SMDs, but costs more.
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