The PL-12C is an active radar, Beyond Visual Range (BVR) air-to-air supersonic solid fuel missile with  laser/microwave proximity fusing.  The PL-12's guidance is a mix of command guidance via a datalink, and its own inertial guidance which it uses before entering the active radar terminal guidance phase. The missile can also be launched to a pre-selected point using its inertial system, before switching on its own seeker for a terminal search. Over short ranges the missile can be launched in a 'fire-and-forget' mode using its own active seeker. The PL-12 also has a 'home-on-jam' mode, allowing it to passively track and engage an emitting target.  The PL-12 has a 38+ g maneuvering limit.  The PL-12C features with foldable tailfins for internal carriage on 5th-generation fighters.

Source: http://chinese-military-aviation.blogspot.com/p/missiles-i.html; http://en.wikipedia.org/wiki/PL-12
