Quantum Cube Mini 121

Quantum Cube Mini 121 is a compact LED grow-light module from Lientec LED built around 121 Samsung LM301H diodes on a 70×70 mm aluminum-core PCB. Designed to behave like a Cree CXB3590 run at about 50 W, it operates at 30–36 V with typical drive currents around 1400 mA (maximum 1650 mA). The board is offered in 3000 K, 3500 K and 5000 K white options and features a 115° emission angle. Lientec quotes photon efficacy up to 2.93 µmol/J depending on color temperature. The module weighs 0.05 kg and is intended for use with an appropriate heatsink (Lientec recommends 120–133 mm) and a constant-current LED driver; example pairings include Mean Well LPC-60-1400 and ELG-/HLG‑C series.