Due to the small size of most SMD components, manufacturers are not able to write
the full part number on the case. They use instead a marking code typically
composed of a combination of 2 or 3 letters or digits. When repairing an unknown
electronic board, it becomes so difficult to know what is the exact type of a given
component. This database allows to quickly find the part number of a SMD component
when you have only the marking code.
Showing codes starting with 'U.'
Marking
Name
Manufacturer/Case
Function
U.
MMSZ5222SPT
Chenmko Enterprise
SOD-523
SOD-523
Zener diode
2.5V±5%, Izt=20mA, Zzt=30, 225mW
2.5V±5%, Izt=20mA, Zzt=30, 225mW
U.
MMSZ5270SPT
Chenmko Enterprise
SOD-523
SOD-523
Zener diode
91V±5%, Izt=1.4mA, Zzt=400, 225mW
91V±5%, Izt=1.4mA, Zzt=400, 225mW