ACT91 Overview
0044 (0)118 979 1238 0044 (0)118 979 1283 info@actcrystals. ACT90 & 91CSMX The ACT90 & 91are miniature surface mount Watch Crystal whose low power consumption makes them ideal for portable applications. Their size makes them suitable for high density circuit boards or applications where space is limited and the tape and reel packaging means that they are ideal for automatic placement machines.