ST series hard probe used in the dc testing, 0.020 inch (0.51 mm) in diameter tungsten needle bar material through electrochemical machining precision become different tip diameter, length of 5 inch (38.1 mm), the application and the vast majority of the chip electrode probe temperature sensor and circuit temperature sensor,
ST series hard needle can be used to scratch or puncture the chip surface passivation layer, the probe can choose nickel plating surface, if you choose to nickel plating behind model to increase the "NP",

Type needle bar diameter tip diameter
ST - 20-0.5-0.020 "(0.51 mm) & lt; 1 micron
ST - 20 to 1, 0.020 "(0.51 mm) & lt;
2.0 micronsST 20-2-0.020 "(0.51 mm) & lt;
5.0 micronsST - twenty - five 0.020 "(0.51 mm) & lt;
10.0 micronsST 10-20-0.020 "(0.51 mm) & lt;
20.0 micronsST - 20-25 0.020 "(0.51 mm) & lt;
50.0 micronsST - 20 to 50 0.020 "(0.51 mm) & lt;
100.0 micronsST - 20-100 0.020 "(0.51 mm) & lt; 200.0 microns