Best Practices

General PCBA Functional Test Flow

Throughout our years of implementing automated PCBA functional tests, we've found that using the following test flow is useful:

• Continuity Tests
  • Test continuity between power and ground on any connections that provide power to the device under test
  • Prevents powering the device when an easily detectable short is available
  • Typically covered by ICT or Flying Probe testing, however, this is a very fast test to implement and prevents damaging failed DUTs.
• Pre-Programming Voltage Tests
  • Check all voltage rails on the DUT
• Programming
• Post-Programming Voltage Tests
• Functional Tests
• Calibration