TANAKA Launches New Alloy “TK-FS” for Probe Pins

May 9, 2023

TANAKA Kikinzoku Kogyo K.K., which operates the TANAKA Precious Metals manufacturing business, announced the launch of TK-FS, a new allow for probe pins of probe cards and test sockets used in the testing process of semiconductor manufacturing. Samples started shipping in July of 2022, and a material with even better performance has been achieved through continuous research and development.

So far, TANAKA Kikinzoku Kogyo has been manufacturing and selling palladium (Pd) materials mainly for pogo pin-type probe pins used in test sockets for final testing (post-processing) of semiconductor packages. The latest TK-FS launch is a material that can be used in a wide range of types of probe pins besides pogo-pin types, such as cantilever-type or vertical-type for wafer testing (pre-processing) probe cards. This product has three unique attributes: a Vickers hardness of at least 500, specific resistance of at most 7.0µΩ・cm, and durability that can withstand 10 or more times of repeated bending. In TANAKA Kikinzoku Kogyo’s existing products, there is no material that has simultaneously achieved these three qualities of high hardness, low specific resistance, and high pliability. This product succeeded in addressing all requirements, allowing the same material to be used in various types of probe pins.

20230509_TANAKA Launches New Alloy “TK-FS” for Probe Pins.pdf