The special diodes for railway electric locomotives are 2DP5H, 2DP5F (such as the square type is made for locomotives of explosion-proof and high temperature-resistant imported chips, the shell is also explosion-proof and flame-retardant, thin chips made in China, can only be used in other places where the requirements are not high, locomotives will break down quickly). The special chip for locomotive driver YD2000, integrated circuit LM158J, integrated circuit LM124J Integrated circuit LM139J, integrated circuit SG1525AJ, integrated circuit KJ004, integrated circuit KJ041, integrated circuit KJ042, integrated circuit TCA787AP, integrated circuit CH250, integrated circuit KJ001, integrated circuit KJ009, integrated circuit KJ008, integrated circuit KJ006, integrated circuit TCA785, integrated circuit SG2004/883, pressure gauge Y60-1000kpa, axial pressure gauge Y60Z-1000kpa, Radial band-edge pressure gauge Y60T-1000kpa, axial band-edge pressure gauge Y60ZT-1000kpa, fine scale pressure gauge Y60-1000kpa-1.5, pressure gauge Y100-1000kpa, radial band-edge pressure gauge Y100T-1000kpa, axial band-edge pressure gauge Y100ZT-1000kpa, marine pressure gauge (black dial with night light) YC60-1000KPa, marine pressure gauge (black dial with night light) YC100-100 kPa 0KPa, Seismic Pressure Gauge YN60-1000kpa, Seismic Pressure Gauge YN100-1000kpa, Double Needle Hydraulic Gauge YH100-60kpa, Magnetic Aided Contact Gauge YXC100-1000kpa, TAG：