A new front-end electronics hybrid with a flexible kapton substrate was dev
eloped for a silicon microstrip vertex detector. The hybrid showed a noise
contribution which is estimated to be 1/35th of a minimum ionizing particle
signal. Material thickness of the hybrid is 0.7% of a radiation length. Th
e hybrid front-end electronics was operated in a deadtime-less. analog-pipe
-line mode. (C) 2001 Published by Elsevier Science B.V.