HEATSINKS FEATURES Code 5085 ZD-30 Dimensions: Large 85mm - Bases 57mm - Thicness central nucleus 4,5mm Thermal resistance: 2,4º C/W for 75mm Surface: 917 mm²/mm. Weight per Meter: 2,370 Kg. Code 7225 ZD-4 Dimensions: Bases 49mm - Height 33mm - Thicness central nucleus 3mm Thermal resistance: 3.9º C/W for 75mm Surface: 300 mm²/mm. Weight per Meter: 0,964 Kg Code 6525 ZD-12 Dimensions: Bases 62mm - Height 33mm - Thicness central nucleus 3mm Thermal resistance: 3.55º C/W for 75mm Surface: 310 mm²/mm Weight per Meter: 1,20 Kg. Code 4727 ZD-15 Dimensions: Bases 116mm - Height 53mm - Thicness central nucleus 4mm. Bases between fins(of the center): 54 mm. Thermal resistance: 1.95º C/W for 75mm Surface: 1094 mm²/mm Weight per Meter: 3,16 kg.