Reliability & testing
Ask for evidence that represents the production stackup and its thermal history.
Thermal cycling and HDI interconnects
Thermal expansion mismatches can stress microvia interfaces and internal connections. Qualification should represent the manufacturing and service exposures that matter for the product.
Reliability & testingMicrosection inspection of HDI boards
A microsection reveals a local view of layers, holes and interfaces. It is useful evidence, but sampling and section position limit what it can prove.
Reliability & testingElectrical testing for HDI PCB
Bare-board electrical testing checks connectivity and isolation against the intended netlist. Its scope differs from impedance testing and thermal reliability testing.
Reliability & testingTest coupons that represent the board
A coupon should reproduce the relevant materials, geometry and process history of the production structure being evaluated.
Reliability & testingWarpage and dimensional stability in HDI
Thin dielectrics, asymmetric copper and repeated thermal processing can make dimensional control a significant HDI concern.
Reliability & testingPCB Troubleshooting-Ultimate Guide On Purpose And Problems Goal
PCB Troubleshooting-Ultimate Guide On Purpose And Problems Goal: reference information, design-review checkpoints and related reliability & testing resources.
Reliability & testingCommon PCB PCBA Testing Techniques
Common PCB PCBA Testing Techniques: reference information, design-review checkpoints and related reliability & testing resources.
Reliability & testingUnderstanding Manufacturing Tolerances on a PCB – Track Width and Isolation Gap Tolerances
Understanding Manufacturing Tolerances on a PCB – Track Width and Isolation Gap Tolerances: reference information, design-review checkpoints and related reliability & testing resources.
Reliability & testingWhat is the typical tolerance for PCB?
What is the typical tolerance for PCB: reference information, design-review checkpoints and related reliability & testing resources.
Reliability & testingUnderstanding Manufacturing Tolerances on a PCB
Understanding Manufacturing Tolerances on a PCB: reference information, design-review checkpoints and related reliability & testing resources.
Reliability & testingHow to Use an Ultrasonic Cleaner to Restore Electronics and PCBs
How to Use an Ultrasonic Cleaner to Restore Electronics and PCBs: reference information, design-review checkpoints and related reliability & testing resources.
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Bring the requirements.
Start the right conversation.
Share your layer count, via structure, material and quantity. Give the fabrication review a clear starting point.