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 'WO'

Marking
Name
Manufacturer/Case
Function
WO
2SA1483-O
Toshiba
SOT-89
PNP transistor
Sw, 60V, 200mA, 1W, B=70..140, >100MHz
WO
2SC2859-O
Toshiba
SC-59
NPN transistor
AF, 35V, 500mA, 150mW, B=70..140, 200MHz
WO
2SC4118-O
Toshiba
SOT-323
NPN transistor
AF-Drv, Sw, 35V, 500mA, 100mW, B=70..140, 200MHz
WO
BCR191L3
Infineon Technologies
TSLP-3
PNP transistor
Sw, 50V, 100mA, 250mW, R1/R2=22k/22k, 130MHz
WO
BZT52B20
PanJIT Semiconductor
SOD-123
Zener diode
20V±2%, Izt=5mA, Zzt=55, 410mW
WO
BZT52B20S
Micro Commercial Components
SOD-323
Zener diode
19.6..20.4V, Izt=5mA, Zzt=55, 200mW
WO
BZT52C20-F
TAITRON Components
SOD-123F
Zener diode
18.8..21.2V, Izt=5mA, 410mW
WO
BZT52C20-V
Vishay Semiconductor
SOD-123
Zener diode
20V±5%, Izt=5mA, Zzt=55, 500mW
WO
BZT52C20S
PanJIT Semiconductor
SOD-323
Zener diode
20V±5%, Izt=5mA, Zzt=55, 200mW
WO
BZT52C20WS
TAITRON Components
SOD-323F
Zener diode
19.0..21.0V, Izt=5.0mA, 200mW
WO
BZT52C20WT
TAITRON Components
SOD-523
Zener diode
19.0..21.0V, Izt=5mA, Zzt=55, 200mW
WO
BZT52C20WU
TAITRON Components
SOD-723
Zener diode
19.0..21.0V, Izt=5mA, Zzt=55, 200mW
WO
BZT52C24
Diodes
SOD-123
Zener diode
24V±5%, Izt=5mA, Zzt=70, 500mW
WO
BZT52C24
Diodes
SOD-123
Zener diode
24V±5%, Izt=5mA, Zzt=70, 500mW
WO
BZT52C24S
Diodes
SOD-323
Zener diode
24V±5%, Izt=5mA, Zzt=70, 200mW
WO
BZT52C24S
Diodes
SOD-323
Zener diode
24V±5%, Izt=5mA, Zzt=70, 200mW
WO
BZT52C24T
Diodes
SOD-523
Zener diode
24V±5%, Izt=5mA, Zzt=70, 150mW
WO
BZX284-B2V4
Philips
SOD-110
Zener diode
2.4V±2%, If=250mA, 400mW
WO
BZX384C20-F
TAITRON Components
SOD-323F
Zener diode
18.8..21.2V, Izt=5.0mA, 200mW
WO
BZX384C20-V
Vishay Semiconductor
SOD-323
Zener diode
20V±5%, Izt=5mA, Zzt=15, 200mW
WO
BZX584C20
PanJIT Semiconductor
SOD-523
Zener diode
18.8..21.2V, Izt=5mA, Zzt=55, 200mW
WO
BZX784C20
PanJIT Semiconductor
SOD-723
Zener diode
19.0..21.00V, Zzt=55, Izt=5mA, 200mW
WO
BZX84B20
PanJIT Semiconductor
SOT-23
Zener diode
19.60..20.40V, Zzt=55, Izt=5mA, 410mW
WO
BZX84C20
Won-Top Electronics
SOT-23
Zener diode
18.8..21.2V, Zzt=55, Izt=5mA, 350mW
WO
BZX84C20TW
PanJIT Semiconductor
SOT-363
Zener diode
Triple, 19.60..20.40V, Zzt=55, Izt=5mA, 200mW
WO
BZX84C20W
Won-Top Electronics
SOT-323
Zener diode
18.8..21.2V, Zzt=55, Izt=5mA, 200mW
WO
CZRW55C24-G
Comchip Technology
SOD-123
Zener diode
24.0..25.60V, Zzt=70, Izt=5mA, 500mW
WO
KTA1666-O
Korea Electronics
SOT-89
PNP transistor
AF, Sw, 50V, 2A, 500mW, B=70..140, 120MHz
WO
KTC3876S-O
Korea Electronics
SOT-23
NPN transistor
GP, 35V, 500mA, 150mW, B=70..140, 200MHz
WO
LBZT52C24T1G
Leshan Radio Company
SOD-123
Zener diode
22.8..25.6V, Izt=5mA, 500mW
WO
MEZ02-20-D3
Matsuki Electronic Company
SOD-323
Zener diode
19.0..21.0V, Izt=5mA, Zzt=50, 200mW
WO
MM3Z24V
Secos
SOD-323
Zener diode
22.8..25.6V, Izt=5mA, Zzt=70, 200mW
WO
P4SMA160C
Fagor Electronica
DO-214AC
Transient voltage supressor
Vbr=152..168V, Vrwm=136V, 1.9A, 400W(1ms), Bidir.
WO
TZTC20WS
TAITRON Components
SOT-323
Zener diode
19.0..21.0V, Izt=5mA, Zzt=55, 200mW
WO4
PMBS3904

SOT-23
NPN transistor
Sw, 40V, 100mA, 250mW, B=100..300, >180MHz
WO6
PMBS3906

SOT-23
PNP transistor
Sw, 40V, 100mA, 250mW, B=100..300, >150MHz
WOs
BCR191
Infineon Technologies
SOT-23
PNP transistor
Sw, 50V, 100mA, 200mW, R1/R2=22k/22k, 200MHz
WOs
BCR191F
Infineon Technologies
TSFP-3
PNP transistor
Sw, 50V, 100mA, 250mW, R1/R2=22k/22k, 130MHz
WOs
BCR191T
Infineon Technologies
SOT-416
PNP transistor
Sw, 50V, 100mA, 250mW, R1/R2=22k/22k, 130MHz
WOs
BCR191W
Infineon Technologies
SOT-323
PNP transistor
Sw, 50V, 100mA, 200mW, R1/R2=22k/22k, 200MHz