Scanning electron microscope photograph of a T-4-10 Tungsten point.
T-4 tips are for use in most standard commercial micropositioners for probing integrated circuits, pads, or lines. Each T-4 tip uses the same 10, 22, 35, 60, or 125 micron diameter tungsten wire as our Model 12C Picoprobe, but is mounted to a 0.020 inch diameter, 2 inch long tinned copper shaft.
An advantage of the 10 and 22 micron models pointed out by some of our users is that because the tungsten probing wire is thin and flexible it minimizes damage to the integrated circuit and allows them to probe the device for a much longer period of time. The flexibleT-4 tip remains in contact with the circuit even in the presence of probe table vibrations.
T-4 tips are not recommended for use on sensitive nodes where capacitance loading could be a problem. Instead, one of our high impedance Picoprobes should be used. If you would like T-4 samples, please contact our office.
T-4 Series Tungsten Probe Tips Part
Tungsten Probing Wire
Point Radius Tip Length T-4-5 5 micron <0.1 micron 0.13" (3.3mm) T-4-10 10 micron <0.1 micron 0.13" (3.3mm) T-4-22 22 micron <1.0 micron 0.20" (5.1mm) T-4-35 35 micron <2.0 microns 0.20" (5.1mm) T-4-60 60 micron <3.0 microns 0.20" (5.1mm) T-4-125 125 micron <5.0 microns 0.20" (5.1mm) FIGURE 2 Always in stock for immediate delivery.
T-4 Series Tip Dimensions
The T-4 Series utilizes various sizes of tungsten wire attached to a 0.020" (0.51mm) diameter tinned copper shaft.
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