Click to expand Tap to zoom 25- piece SAMSUNG KA339 , COMPARATOR 4 18V/36V, PDIP-14 1 tube by EcoTech Solutions Inc. Sale $28.95 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart 25- piece SAMSUNG KA339 , COMPARATOR 4 18V/36V, PDIP-14 1 tube