Why didn't the Germans mounted the 7.5cm pak 40 on armored tank

1942 year. German response to T-34 and KV

Panzerjager-Fahrzeuge mit 7.5cm Pak 40 auf Fahrgestell S-307(f) - For Those Who Missed Out - Ground - War Thunder — official forum

What are the differences between the M3 Lee tank and the German StuG III? - Quora

Why didn't the Germans mounted the 7.5cm pak 40 on armored tank destroyers like the StuG III and Jagdpanzer IV? It would've simplified the logistics for ammunition and give it better performance

German encounter of Soviet T-34 and KV tanks - Wikipedia

Could the German 88mm Pak 43 knock out any of today's modern MBTs? - Quora

7.5 cm Pak 40, Forgotten Hope Secret Weapon Wiki

This Czech tank became a favorite of the German Army during WWII

7.5cm PaK 40/4 auf RSO mit Allwetterverdeck