Aluminum-based printed circuit board
Base material: PTTC TCB
Number of layers: 1
Thickness: 1.60mm
Copper thickness: 1 oz
Plating process: OSP
Description: SMI charger
Thermal conductivity: 2W/m.K
https://hitechcircuits.com/product/tcb-aluminum-for-for-smi-charger-pcb/