Understanding PCB Electrical Testing

PCB E-Test (Electrical Test) is a critical quality control process that verifies the electrical integrity of printed circuit boards before component assembly. FanyPCB employ advanced testing methodologies to ensure every circuit board meets strict performance standards. This essential validation step checks for opens, shorts, and other electrical defects that could compromise final product functionality.

Comprehensive Testing Methodologies

Modern PCB manufacturing utilizes two primary electrical testing approaches to guarantee reliability. Flying probe testing offers flexible, tooling-free verification for prototypes and small batches, using movable test probes to check networks point-to-point. For high-volume production, dedicated fixture testing provides faster throughput with test beds containing precisely positioned contact pins matching the board's layout. Both methods at FanyPCB achieve complete continuity and isolation verification per IPC-9252 standards.

Industry Standards and Testing Parameters

Our electrical testing protocols adhere to internationally recognized IPC guidelines that define three classes of testing rigor. Class 1 applies basic verification for general electronics, while Class 3 represents the most stringent requirements for mission-critical applications like aerospace and medical devices. Testing coverage typically exceeds 99% of all networks, with test voltages ranging from 50V to 500V depending on design specifications. We maintain comprehensive documentation including netlist verification reports and full test logs for quality traceability.

FanyPCB's Electrical Testing Capabilities

Our testing laboratory features the latest automated equipment to deliver reliable results with exceptional efficiency. The high-speed flying probe systems achieve positional accuracy within ±25μm, capable of testing boards with components already placed. For production runs, our custom test fixtures reduce verification time to seconds per board while maintaining sub-1Ω contact resistance. All testing processes include automated optical inspection (AOI) correlation to cross-validate electrical and visual defect detection.

Testing Process and Quality Assurance

The electrical testing workflow begins with thorough design data analysis to develop optimal test programs. Our engineers create customized test sequences that balance comprehensive coverage with efficient execution time. During testing, any failures trigger immediate alerts with detailed fault location data for rapid troubleshooting. Final certified boards receive unique test identifiers that allow full process tracing through our quality management system.