BIAONU UV LED Board for ELEGOO Saturn 3 & 3 Ultra

A high-output COB emitter for the 12K Saturn panels. Two things send people looking for one: slow fade, where you keep nudging exposure up print after print, and an open circuit inside the module, which kills the light entirely. BIAONU builds this board — it's an aftermarket part, because ELEGOO doesn't sell light engines separately.

Specifications

• 100-die COB emitter, 405 nm wavelength
• Rated up to 245 W
• Sized for the 10" 12K panel
• Generous power leads with polarity marked on the board

Compatibility: ELEGOO Saturn 3 and Saturn 3 Ultra — both ship with a 10" 12K panel and a 405 nm light engine. The Saturn 2 and Saturn 8K use an 8K stack and won't fit. Watch out for near-identical listing titles that are actually LCD panels rather than light boards — check the photo and look for LED counts in the description.