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SCORPION FLS980Dxi Semiconductor Load Board Testing

Ensuring Quality Through Comprehensive Load Board Testing.

blue circle Configurable to meet your unique needs
blue circle Unequalled test coverage
blue circle Superior component access
blue circle Soft touch probing

What is a Load Board?

A semiconductor load board is a high-performance, multi-layer circuit board used to test semiconductor devices during production. It is designed to interface with the semiconductor device and the test equipment to perform electrical tests on the device and verify its functionality, performance, and reliability. The load board provides a connection between the device under test and the test equipment, allowing for the application of electrical signals and measurement of device responses. It is an essential tool for semiconductor manufacturing, ensuring the quality and reliability of the devices before they are shipped to customers.


What is a load Board Image

Load Board Test Challenges


  • ➡️ Bare PCB is tested after fabrication before any components are placed on the board. PCB can be damaged during the component placement processes.
  • ➡️ Defective components can have placement/infant mortality failures
  • ➡️ Connector can be misaligned/damaged during installation.



Load Board Complexity

Is increasing due to:
blue circle Multi-DUT sites
blue circle Higher DUT pin count
blue circle Fast digital I/O speeds

Load Board – Bare PCB Tests


Netlist Verification
Measure resistance of each net trace segments
Leakage Tests

Measure current between nets 

Time Domain Reflectometry
Measures the time between release and return of the low voltage pulse from any reflections

Example of TDR Measurement

Integrate third party TDR instrument hardware and software

Load Board – Component Tests

  • ▫️ Shorts testing – verify power nets have no shorts
  • ▫️ Shorts testing – ensure selected nets have no shorts
  • ▫️ Passive tests – resistors, capacitors, diodes…
  • ▫️ Active tests – FETs, LEDs, Regulators…
  • ▫️ Relay test - measure switching time
  • ▫️ Connector tests – signal and shield continuity
  • ▫️ Planarity test – measure component heights
  • ▫️ Programmable devices – read and write functions

Load Board – Coaxial Connector Testing

Integrate mating Connector within Flying Prober to use for PCBA testing

Load Board – Performance Tests

  • ▫️ RF Testing

  • ▫️ Channel Continuity Test


RF Testing

Measure frequencies up to 40Ghz with high precision placement on top and/or bottom side of PCBA.


Channel Continuity Test

blue circle The DUT Channel Continuity Test verifies the entire signal path
blue circle To understand this test, we trace a Channel from the Input to the DUT.
Probe Tip2-s

Load Board Safety

blue circle A variety of probe tips (and custom probe tips like the Coax Probe Tip for TDR measurement)
blue circle Programmable X, Y & Z axis
blue circle Programmable angle probing
blue circle Programmable probe speed0.75 – 0.015m/s
blue circle Test Point Balancing software ensures the Flying Scorpion system will not violate a user specified contact limit

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