I thought this old yellow LED was a GE SSL‑1… but the microscope says otherwise. The die shape, the reflector cup, the bond wire, even the color of the GaAsP glow all point to something way rarer — an early Hewlett‑Packard prototype from the dawn of visible LEDs. This is what semiconductor history looks like when you zoom all the way in. #led #techtok #engineering --- If you want, I can also craft a shorter, punchier version optimized for TikTok Promote or a more technical one for your niche aud