Why is it die Platine?

Platine ends in -ine, and almost all nouns ending in -ine are feminine: in a German dictionary, 93% of them take die.

All nouns ending in -ine
Sense 1
die

Meaning

[1] Flat carrier electronic circuits

[1] flacher Träger elektronischer Schaltungen

Examples

[1] In the computer there are also own boards for graphics editing

[1] Im Computer befinden sich auch eigene Platinen zur Grafikbearbeitung.

[1] "The circuit board has the size of half a European sheet (100 x 80 mm) and is stuck on both sides"

[1] „Die Platine hat die Größe einer halben Europlatine (100 x 80 mm) und ist beidseitig bestückt.“

Declension

1 Singular Plural
Nominativ die Platine die Platinen
Genitiv der Platine der Platinen
Dativ der Platine den Platinen
Akkusativ die Platine die Platinen

Pronunciation

Dictionary entries include material from Wiktionary. Wiktionary