No expiration date. .
PSN Gift Cards apply to PlayStation 3, PlayStation 4, PSP, and PS Vita. Then your PSN wallet is going to be provided with the same amount of money you had on the card itself. You can then use the money to buy games for your console. If you enjoy gaming, then it is a perfect thing for you. It costs only $10 and often it is more than enough for such popular titles like God of War, The Last of Us or Borderlands 2. What else do you really need?