Can I use a bridged IP traffic NetFlow on PFC3A?

No, PFC3A mode does not support NetFlow bridged IP traffic.
In PFC3A mode, NetFlow collects statistics only for routed traffic. With a PFC3B or PFC3BXL, you can configure NetFlow to collect statistics for both routed and bridged traffic. Netflow for bridged traffic requires Release 12.2(18)SXE or later.

This example shows how to enable NetFlow for ingress-bridged IP traffic in VLAN 200:

Router# configure terminal
Router(config)# ip flow ingress layer2-switched vlan 200

Note: To enable NetFlow for bridged IP traffic on a VLAN, you must create a corresponding VLAN interface, assign it an IP address, and enter the no shutdown command to bring up the interface.