一般低频测试探针分两种,硬针和软针,针尖直径在1μm以上称为硬针,在1μm以下称为软针,硬针用来点pad和扎穿pass,软针用来点metal和FIB的mini pad
Cat-Whisker探针针尖为须丝状固定于探针针杠,针尖为钨材质,针杆为镍,一般为软针。
Solid Tungsten探针针尖材质为钨,针杆材质为镍,具有较小的接触电阻,钨材质较软,能与芯片表面形成良好接触的同时不致损伤芯片。
BeCu探针一般应用于探针卡和低接触电阻情况。
低频探针型号规格如下表
型号 | 描述 | 根/盒 |
T20-4 | 0.4 micron dia. Cat-Whisker | 5 |
0.4 mil dia. Welded to 20 mil Nickel shank 2.2 " long | ||
T20-7 | 0.7 micron dia. Cat-Whisker | 10 |
5 mil 5 mil dia. Welded to 20 mil Nickel shank 1.26 " long | ||
T20-10 | 1 micron dia. Solid Tungsten | 10 |
20 mil shank 1.26 " long | ||
T20-50 | 5 micron dia. Solid Tungsten | 10 |
20 mil shank 1.26 " long | ||
T20-100 | 10 micron dia. Solid Tungsten | 10 |
20 mil shank 1.26 " long | ||
T20-150 | 15 micron dia. Solid Tungsten | 10 |
20 mil shank 1.26 " long | ||
C20-150 | 15 micron dia. Solid BeCu | 10 |
20 mil shank 1.26 " long | ||
T20-200 | 20 micron dia. Solid Tungsten | 10 |
20 mil shank 1.26 " long | ||
T20-1000 | 100 micron dia. Solid Tungsten | 10 |
20 mil shank 1.26 " long | ||
T20-2000 | 200 micron dia. Solid Tungsten | 10 |
20 mil shank 1.26 " long |