28-5-50 Picoprobe Replacement Probe Tip

The GGB Industries / Picoprobe 28/29 Probes have been designed to serve the needs of integrated circuit engineers working in the most advanced high speed, submicron, MOS technology. These high frequency instruments include the attractive features of their sister probes, the 18B and 19, which encompass full dc capability, negligible dc current drain, and extremely low input capacitance. In addition the frequency range of the 28 and 29 have been extended to a full 1 GHz.

The Picoprobe 28 and 29 utilize their own special probe tips developed by GGB Industries. Probe tips are manufactured with 10, 20, or 50 micron diameter tungsten probe wires that are electrochemically sharpened to a point radius of less than 0.2, 1.0 and 3.0 microns respectively. The 10 and 20 micron wires flex when in contact with the circuit so that the potential for damage to the circuit and probe point is minimized. The flexible tip tends to keep the probe point in contact with the circuit even in the presence of probe table vibrations. The heavier 50 micron probe wire can be used when a stronger contact force is required.

The circuitry located in the Picoprobe 28 and 29 body is very rugged; however, the unprotected MOS/SOS (metal on sapphire/silicone on sapphire) input built into each replaceable probe tip is subject to damage by accidental electrostatic discharge. Should the MOS/SOS input or probe point become damaged, the probe tip can easily be removed and replaced.