Fischer Elektronik Heatsinks for ICS – Fischer Elektronik ICK 24 B, The Fischer Elektronik 19.4° Heatsink ICK 24 B for ICs has been specially developed for cooling ICs in a DIL housing 14-24 pins (essential for more powerful ICs). Fischer Elektronik ICK 24 B Heatsink for ICS 14-24 19.4° 33 x 19 x 4.8