PCD is only distributed with the media kit for CUCM 10.x, it's not publicly available for download on cisco.com
[+5] to Manish/Jaime.
You would get PCD either through PUT [if going for upgrade/migration] or if placing a fresh order.
In both cases, it would be e-deliveryAccess order from where u need to download PCD.
name of downloaded file would be pcd_vApp_UCOS_10.5.2.10000-5_vmv7_v1.2.ova
Please find attached snapshot.