More on loop height testing

11 March 2015

Schematic view of loop height testing
Schematic view of loop height testing

Loop height measurement

Did you know you can use the Condor Sigma for measuring the wire loop height on your samples? XYZTEC bond testers have been doing loop height tests for years, but the technology goes forward and testing becomes more advanced and accurate. Read on to find out more about loop height testing with the Condor Sigma.


Configure the loop height measurement test settings easily in the Condor Sigma software
Configure the loop height measurement test settings easily in the Condor Sigma software

Analyze not only forces but also distances on your product

Bond testers are traditionally used for force measurement only, but the extreme positional accuracy of the Condor Sigma platform also enables you to measure whether the dimensions of your product are within specification, with never before seen accuracies. The system is equipped with 30nm resolution linear encoders and is completely backlash free (no gear box).

On any Condor Sigma bond tester, the loop height measurement test method is available for free using pull sensors. The system will accurately determine the height of a wire, ribbon or other component above the surface. The measurement result in this case is not a force, but a distance.

To enable quicker testing, the system can store the Z-height of the surface under the first wire and use this value again when sensing the following multiple wires. It is also possible to probe the surface height in a different spot than directly under the wire.

Menu to select the method type - the loop height method is available alongside the more traditional types
Menu to select the method type - the loop height method is available alongside the more traditional types

The operator can combine loop height measurement with a pull test, whether destructive or not. In that case, the loop height distance is simply presented alongside the force measurement result.

As with regular wire pull, it is possible to use the hook shift functionality of the Condor Sigma to position a fine pitch hook accurately under the wire in tight spaces. Auto hook is also available and the loop height measurement test method is of course for both manual and automatic testing.

The Condor Sigma is also unique because of its programmable landing force down to 2,5 gf. Combined with an also programmable probe test speed, this enables very delicate sensing. Deformations or damage to the sample are therefore minimized.


Using the Condor Sigma it is just as easy to analyze distance data as to analyze force data
Using the Condor Sigma it is just as easy to analyze distance data as to analyze force data

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