CBP Tweezer prior to closing
CBP Tweezer prior to closing

Cold Bump Pull test

  • Pull test solder balls
  • Sensor accuracy ±0.075%
  • Produces failure modes of interest like IMC bond failure and Pad Crater
  • Reproduces pull loads that typically occur in most real failure events
  • Test ball geometries down to 50µm diameter (dependent on ball height to diameter ratio)
  • Grip force
  • Closing speed
  • Open and closed positions
  • The RMU can hold up to 6 sensors in any combination, including up to 4 USB Tweezers
  • In accordance with JEDEC JESD22-B115, JEITA EIAJ ET-7407 and IPC-9708
  • CBP Jaw Cleaner
  • Copper pillar testing also possible

How to: Cold Bump Pull

We have added an extensive how-to on Cold Bump Pull (CBP) to our website. By doing this we aim to spread knowledge about bond testing in the industry. Click here to go to www.coldbumppull.how.

Difference between Shear and CBP test
Difference between Shear and CBP test

Advantage of cold bump pull

Cold Bump Pull (CBP) testing with the XYZTEC USB Tweezers provides unparalleled precision and control. The bond of many solder balls is at the bottom of a cavity formed by solder resist layer. In a shear test this supports the bond, resulting in a predominance of solder shear failure modes.

Reformed solder ball
Reformed solder ball

In a pull test the bond is not supported in this fashion, leading to the possibility of more relevant failure modes. Special jaws are required to grip the ball. These reform the upper part of the ball to enable the pull load to be applied without disturbing the bond. Learn more about this in the how-to section of our website.

CBP Jaw Cleaner

During use solder builds up in the cavity in cold bump pull (CBP) jaws. This reduces their grip efficiency and affects the quality of your measurements. Cleaning the cavities is very difficult and small ball cavities can be damaged easily. Click here to find out more information about XYZTEC's patented solution: the CBP Jaw Cleaner.

Tweezers flyer

Click here to download the Tweezer Solutions flyer (PDF) by XYZTEC.

Contact us

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