Blog
PCB fabrication, PCB assembly, PCB materials, DFM, SMT, HDI, ceramic PCB, and electronics manufacturing guides from QueenEMS.
PCB Fabrication Tolerances: What You Should Actually Pay For?
Table of Contents You send your Gerber files to three different manufacturers, and one factory immediately flags your design because the annular…
How to Choose a PCB Manufacturer for Your Board
Review draft for post 1865: choose a PCB manufacturer by checking board capability, evidence, quote scope, prototype approval, and production controls….
PCB Copper Weight Cost: When Do You Actually Need 2oz?
You are laying out a power delivery network for a new motor controller, staring at your CAD screen, wondering if you should…
Top 10 PCB Fabrication Defects: What They Look Like and How to Prevent Them
You just opened a box of freshly manufactured circuit boards, and the green solder mask is already peeling off the edges. If…
PCB Trace Width & Spacing Guide: Rules, Charts & Calculator
You just finished routing a dense microcontroller board with 4mil traces, feeling proud of the compact layout. Then, your manufacturer kicks the…
PCB Warping Causes: Why Your Boards Bend & How to Stop It
You unpack a fresh batch of circuit boards, set one on your workbench, and notice it wobbles like a bad diner table….
2-Layer vs 4-Layer PCB: How to Pick the Right One for Your Design
You’re staring at your CAD tool, wondering if you can squeeze that Bluetooth module onto a double-sided board to save a few…
How to Order PCB Prototype Builds Without Delays
Quick Answer: To order PCB prototype builds without delays, send a complete release package: Gerber or ODB++, drill files, fabrication drawing, stackup,…
PCB Fabrication Lead Time: How Long Will Your Board Actually Take?
You submitted your Gerber files on a Tuesday, expecting bare boards on your desk by Friday, only to receive an automated notification…
Guide to PCB Fabrication Cost: How to Save on Your Quote
Table of Contents You just designed a new board, and now you are wondering about the actual PCB fabrication cost before sending…
How to Choose Copper Weight: The Heavy Copper PCB Design Guide
You need to route 100 amps across a compact motor controller, but standard 1oz copper traces would physically melt under that load….
What PCBA Approved Alternates Need Before Release
Decide how PCBA approved alternates should be listed, reviewed, sourced, and locked before production release….