This is the specific family or design series of the PCB layout.
Let’s walk through a common repair scenario using the . hannstar j mv4 94v0 e89382 boardview top
The rating appears in the story of a failed inverter: if a high-side MOSFET shorted, the PCB didn't sustain flame—only charred tracks. That saved the panel. The E89382 traceability means you can request the exact prepreg stackup from UL, vital for high-speed differential pairs (LVDS clock at 135 MHz). This is the specific family or design series