That depends on the Sonatina in question. Every Sonatina is a different piece - every piece has different notes. Perhaps you are reffering to a specific Sonatina, in which case - what tune are you asking about?
Yes, there is such a sonatina, Op.98.
Mozart Pereira Soares has written: 'Erva cancheada'
Well minuet is like a half sonatina. Sonatina is a half sonata
Daniel Ruyneman has written: 'Sonatina for flute or oboe and harpsichord or piano' -- subject- s -: Sonatas - Flute and harpsichord -
Franz Eduard Gehring has written: 'Wolfgang Amadeus Mozart' 'Mozart'
Wilibald Nagel has written: 'Goethe und Mozart' 'Gluck und Mozart'
Atanas Ourkouzounov has written: 'Fairy tale' 'Reflet IV' 'East-West sonatina' 'Partite variate no. 1' 'Into the mouvement'
Mary Lynn has written: 'Sea Of Dreams' 'It Had to be You' 'Sonatina' 'Dear Cari' 'Where You Find It' 'More Than Friends' 'Autumn Harvest'
It was written (though not completed) in the Classical Era, and in the very last days of Mozart's life.
Mozart has written over 600 pieces in his 35 year lifetime.
Mozart.