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 '4O'
Marking
Name
Manufacturer/Case
Function
4O
2SA1721-O
Toshiba
SOT-23
SOT-23
PNP transistor
Nix, Vid, 300V, 100mA, B=70..140, 55MHz
Nix, Vid, 300V, 100mA, B=70..140, 55MHz
4O
BZD27B13P-M
Vishay Semiconductor
DO-219AB
DO-219AB
Zener diode
13V±2%, Zzt=5, Izt=50mA, 800mW, H-free
13V±2%, Zzt=5, Izt=50mA, 800mW, H-free
4O
DDZ6V2ASF
Diodes
SOD-323F
SOD-323F
Zener diode
5.78..6.09V, Izt=20mA, Zzt=50, 500mW
5.78..6.09V, Izt=20mA, Zzt=50, 500mW
4O
TPSMW27A
Fagor Electronica
SOD-123W
SOD-123W
Transient voltage supressor
Vrm=23.1V, Vbr=25.7..28.4V, Ipp=8.0A, 300W
Vrm=23.1V, Vbr=25.7..28.4V, Ipp=8.0A, 300W
4O
XP01507
Panasonic
SC-88A
SC-88A
NPN transistor
Dual, LN, 150V, 50mA, 150mW, >150MHz
Dual, LN, 150V, 50mA, 150mW, >150MHz
4O
XP1507
Panasonic
SC-88A
SC-88A
NPN transistor
Dual, LN, 150V, 50mA, 150mW, >150MHz
Dual, LN, 150V, 50mA, 150mW, >150MHz