Aiming for mobile and hand-held applications miniaturized ion mobility spectrometer drift tubes are required. With its outer dimensions of only 15 mm x 15 mm in cross section and an overall length of 56 mm, the mini-IMS is one of our smallest high-performance drift tube IMS with a resolving power of R_P = 63 and detection limits in the mid ppt_V-range for 1s of averaging. For easy integration, the miniaturized drift tube is designed to fit commercially available DIP sockets (7.62 mm row-to-row spacing, 34 pins with 2.54 mm pitch). This enables direct connection of the drift tube to the driver electronics. Different ionization sources (radioactive and non-radioactive) can be operated with this drift tube.