Hello!
 
I can not filnd film back size Sony TRV940. CCD - 1/4.7", 4:3
 
Please, help!

Dear Krolik,
 
try 5.4x4.05mm.  
It's just a mathematicly calculated value, not a known. Worth a try...
(1"=25.4mm: 25.4/4.7=5.4, 5.4/4*3=4.05)
 
Best regards
 
Tim