February 1, 2023
Shenzhen Fuman LM358S - general purpose opamp : weekend die-shot0.02$ each if buying full reel. Die size 560x440 µm. Quite a bit smaller than one from Ti.
Not sure manufacturer has a website. "Founded in 2001, Shenzhen Fuman Electronics Group Co., Ltd. is a state-level high-tech enterprise engaged in the research and development, packaging, testing and sales of high-performance analog and digital-analog integrated circuits. Currently has more than 400 kinds of IC products in the field of consumption including power management, LED driver, MOSFET and so on."