Click to expand Tap to zoom 1 piece - ST mk18131n-05 mk3870/228 Bit Microcontroller Dual Marked DIP48 by EcoTech Solutions Inc. Sale $34.95 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart 1 piece - ST mk18131n-05 mk3870/228 Bit Microcontroller Dual Marked DIP48