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 'QO'

Marking
Name
Manufacturer/Case
Function
QO
2SC2714-O
Toshiba
SC-59
NPN transistor
VHF Mix/Osc, 40V, 20mA, 100mW, B=40..80, 550MHz
QO
2SC4215-O
Toshiba
SOT-323
NPN transistor
RF, FM/AM, 40V, 20mA, 100mW, B=70..140, 550MHz
QO
2SC4915-O
Toshiba
SOT-23
NPN transistor
FM, RF, Mix, IF, 40V, 20mA, 100mW, 550MHz, B=70..140
QO
KTB1260-O
Korea Electronics
SOT-89
PNP transistor
GP, 80V, 1A, 500mW, B=120..240, 100MHz
QO
KTC4080-O
Korea Electronics
SOT-323
NPN transistor
GP, 50V, 20mA, 100mW, B=70..140, >550MHz
QO
MCP100T-475I
Microchip Technology
SOT-23
Voltage detector IC
4.75V±150mV, -Reset PPO
QO
PT7M7050NLTA

SOT-23-5
Voltage detector IC
5.0V±1.5%, -Reset ODO
QO
PT7M7050NLTAE

SOT-23-5
Voltage detector IC
5.0V±1.5%, -Reset ODO, Lead free