Thanks for your reply.
Let me check again
So 0.152mm LF thickness targeting at the gap 0.010mm can still control the lead half etch depth to be within the spec.(the tie bar & lead half etch depth spec:0.075+/-0.025mm)
Then 0.203mm LF thickness whether can control this gap or not.(the tie bar & lead half etch depth spec:0.1+/-0.03mm)