
Heat sink 50 mm 14 K/W black anodised, SK 437/ 50/ STS, Fischer Elektronik
Heat sink 50.8 mm 9 K/W black anodised, SK 104/ 50,8/ STS, Fischer Elektronik

Heat sink 50.8 mm 6.2 K/W black anodised, SK 409/ 50,8/ STS, Fischer Elektronik

ADVANCED PHOTONIX STS-88-058 Transmissive Photo Interrupter, Phototransistor, Panel / Chassis, 3.8 mm, 50 mA