The ultimate SMD marking codes database

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 'TO'

Marking
Name
Manufacturer/Case
Function
TO
2SK302-O
Toshiba
SOT-23
FET n-type
VHF, 20V, 30mA, 200mW, Idss=1.5..3.5mA
TO
ASM161JEUS
Alliance Semiconductor
SOT-143
Voltage detector IC
4.0V±2%, -MR, -Reset ODO
TO
BAS40TGP
Chenmko Enterprise
SOT-416
Diode
SBD, 40V, 200mA, Vf<1V(40mA), 5ns
TO
PT7M6314US29D3

SOT-143
Voltage detector IC
2.9V±1.5%, 200ms, -Restet PPO, -MR
tO4
PMBS3904
Philips
SOT-23
NPN transistor
Sw, 60V, 200mA, 250mW, B=100..300, >180MHz
tO6
PMBS3906
Philips
SOT-23
PNP transistor
Sw, 40V, 100mA, 250mW, B=100..300, >150MHz