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 'W3'

Marking
Name
Manufacturer/Case
Function
W3
AP1703GTW
Anachip
TSOT-23-3L
Voltage detector IC
2.25V±1.5%, -Reset PPO
W3
AP1703GW
Anachip
SOT-23-3L
Voltage detector IC
2.25V±1.5%, -Reset PPO
W3
AP8822C-33GA
Anwell Semiconductor
SOT-23
Voltage detector IC
3.3V±2%, -Reset PPO, 200ms, Halogen-fre
W3
AP8822C-33GI
Anwell Semiconductor
SC-82
Voltage detector IC
3.3V±2%, -Reset PPO, 200ms, Halogen-fre
W3
AP8822C-33GS
Anwell Semiconductor
SC-82S
Voltage detector IC
3.3V±2%, -Reset PPO, 200ms, Halogen-fre
W3
AP8822C-33GT
Anwell Semiconductor
SC-70
Voltage detector IC
3.3V±2%, -Reset PPO, 200ms, Halogen-fre
W3
AP8822C-33PA
Anwell Semiconductor
SOT-23
Voltage detector IC
3.3V±2%, -Reset PPO, 200ms
W3
AP8822C-33PI
Anwell Semiconductor
SC-82
Voltage detector IC
3.3V±2%, -Reset PPO, 200ms
W3
AP8822C-33PS
Anwell Semiconductor
SC-82S
Voltage detector IC
3.3V±2%, -Reset PPO, 200ms
W3
AP8822C-33PT
Anwell Semiconductor
SC-70
Voltage detector IC
3.3V±2%, -Reset PPO, 200ms
W3
BD46471G
Rohm
SSOP-5
Voltage detector IC
4.7V±1%, -MR, -Reset PPO, 100ms
W3
BZT52B3V0
PanJIT Semiconductor
SOD-123
Zener diode
3.0V±2%, Izt=5mA, Zzt=95, 410mW
W3
BZT52C3V0-F
TAITRON Components
SOD-123F
Zener diode
2.8..3.2V, Izt=5mA, 410mW
W3
BZT52C3V0-V
Vishay Semiconductor
SOD-123
Zener diode
3.0V±5%, Izt=5mA, Zzt=95, 500mW
W3
BZT52C3V0S
PanJIT Semiconductor
SOD-323
Zener diode
3.0V±5%, Izt=5mA, Zzt=95, 200mW
W3
BZT52C3V0WS
TAITRON Components
SOD-323F
Zener diode
2.85..3.15V, Izt=5.0mA, 200mW
W3
BZT52C3V0WT
TAITRON Components
SOD-523
Zener diode
2.85..3.15V, Izt=5mA, Zzt=95, 200mW
W3
BZT52C3V0WU
TAITRON Components
SOD-723
Zener diode
2.85..3.15V, Izt=5mA, Zzt=95, 200mW
W3
BZT52C3V3
Diodes
SOD-123
Zener diode
3.3V±5%, Izt=5mA, Zzt=95, 500mW
W3
BZT52C3V3
Diodes
SOD-123
Zener diode
3.3V±5%, Izt=5mA, Zzt=95, 500mW
W3
BZT52C3V3LP
Diodes
DFN1006-2
Zener diode
3.3±5%, Izt=5mA, Zzt=95, 250mW
W3
BZT52C3V3LP
Diodes
DFN1006-2
Zener diode
3.3±5%, Izt=5mA, Zzt=95, 250mW
W3
BZT52C3V3S
Diodes
SOD-323
Zener diode
3.3V±5%, Izt=5mA, Zzt=95, 200mW
W3
BZT52C3V3S
Diodes
SOD-323
Zener diode
3.3V±5%, Izt=5mA, Zzt=95, 200mW
W3
BZT52C3V3T
Diodes
SOD-523
Zener diode
3.3V±5%, Izt=5mA, Zzt=95, 150mW
W3
BZV49-C2V4
Zetex
SOT-89
Zener diode
2.4V±5%, Izt=5mA, 1W
W3
BZX384C3V0-V
Vishay Semiconductor
SOD-323
Zener diode
3.0V±5%, Izt=5mA, Zzt=80, 200mW
W3
BZX584C3V0
PanJIT Semiconductor
SOD-523
Zener diode
2.8..3.2V, Izt=5mA, Zzt=100, 200mW
W3
BZX784C3V0
PanJIT Semiconductor
SOD-723
Zener diode
2.85..3.15V, Zzt=95, Izt=5mA, 200mW
W3
BZX84B3
PanJIT Semiconductor
SOT-23
Zener diode
2.94..3.06V, Zzt=95, Izt=5mA, 410mW
W3
BZX84C2V4
Central Semiconductor
SOT-23
Zener diode
2.2..2.6V, Zzt=100, Izt=5mA, 350mW
W3
BZX84C3
Won-Top Electronics
SOT-23
Zener diode
2.8..3.2V, Zzt=95, Izt=5mA, 350mW
W3
BZX84C3V0
Micro Commercial Components
SOT-23
Zener diode
2.8..3.2V, Zzt=95, Izt=5mA, 350mW
W3
BZX84C3V0TW
PanJIT Semiconductor
SOT-363
Zener diode
Triple, 2.94..3.06V, Zzt=95, Izt=5mA, 200mW
W3
BZX84C3W
Won-Top Electronics
SOT-323
Zener diode
2.8..3.2V, Zzt=95, Izt=5mA, 200mW
W3
CZRW55C3V3-G
Comchip Technology
SOD-123
Zener diode
3.3..3.50V, Zzt=95, Izt=5mA, 500mW
W3
ELM7633LBB
ELM Technology
SOT-23
Voltage detector IC
3.3V±2%, -Reset PPO, 500ms
W3
ELM9733CAB
ELM Technology
SOT-89
Voltage detector IC
3.3V±2.5%, +Reset PPO
W3
ELM9733CBB
ELM Technology
SOT-23
Voltage detector IC
3.3V±2.5%, +Reset PPO
W3
FES3D
Fagor Electronica
DO-214AB
Diode
U-fast Recovery, 200V, 3A, <50ns
W3
FMW3
Rohm
SOT-23-5
NPN transistor
Dual, GP, 120V, 50mA, 140MHz
W3
KDV1471
Korea Electronics
SOT-23
Capacitance diode
FM-Tuning, 16V, 32/37pF(1V)
W3
LBZT52C3V3T1G
Leshan Radio Company
SOD-123
Zener diode
3.1..3.5V, Izt=5mA, 500mW
W3
MC74VHC1GT126DF
ON Semiconductor
SOT-353
Capacitance diode
Bus buffer gate with 3-state output
W3
MC74VHC1GT126DT
ON Semiconductor
SOT-23-5
Capacitance diode
Bus buffer gate with 3-state output
W3
MEZ02-3.0-D3
Matsuki Electronic Company
SOD-323
Zener diode
2.85..3.15V, Izt=5mA, Zzt=95, 200mW
W3
MM3Z3V3
Secos
SOD-323
Zener diode
3.1..3.5V, Izt=5mA, Zzt=95, 200mW
W3
R1210N331D
Ricoh
SOT-23-5
DC/DC voltage converter IC
PWM step-up, 3.3V, 180kHz
W3
R3111Q331C
Ricoh
SC-82AB
Voltage detector IC
3.3V±2%, -Reset ODO
W3
R5325N003B
Ricoh
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=1.8V/3V±1%, 150mA, +CE, CL
W3
RP103Q171B
Ricoh
SC-82AB
Linear voltage regulator IC
LDO, 1.7V±1%, 150mA, +CE
W3
TZTC3V0WS
TAITRON Components
SOT-323
Zener diode
2.85..3.15V, Izt=5mA, Zzt=95, 200mW
W3-
RT9198-24PBR
Richtek Technology
SOT-23-5
Linear voltage regulator IC
LDO, 2.4V±1%, 300mA, +CE
W30
MIC5255-3.0BML
Micrel
MLF-6
Linear voltage regulator IC
LDO, 3.0V±1%, 150mA, +CE
W30
MIC5255-3.0YML
Micrel
MLF-6
Linear voltage regulator IC
LDO, 3.0V±1%, 150mA, +CE, Pb-free
W30
PDTC114YU

SOT-323
NPN transistor
Sw, 50V, 100mA, 200mW, R1/R2=10k/47k
W30
R1163N301D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 3.0V±1.5%, 150mA, +CE, CL, AE(Mode)
W30
TK11130M
Toko America
SOT-23L-6
Linear voltage regulator IC
LDO, 3.0V±1.5%, 200mA, -CE
W30
TK11130S
Toko America
SOT-23-5
Linear voltage regulator IC
LDO, 3.0V±1.5%, 200mA, -CE
W31
PDTA143XT

SOT-23
PNP transistor
Sw, 50V, 100mA, 250mW, R1/R2=4.7k/10k
W31
R1163N311D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 3.1V±1.5%, 150mA, +CE, CL, AE(Mode)
W31
SMTPB200
SGS-Thomson Microelectronics
DO-214AB
Transient voltage supressor
Vrwm=200V, 100A, 5W(1ms), Bidir.
W31
TK11131M
Toko America
SOT-23L-6
Linear voltage regulator IC
LDO, 3.1V±1.5%, 200mA, -CE
W31
TK11131S
Toko America
SOT-23-5
Linear voltage regulator IC
LDO, 3.1V±1.5%, 200mA, -CE
W32
PDTC143XT

SOT-23
NPN transistor
Sw, 50V, 100mA, 250mW, R1/R2=4.7k/10k
W32
R1163N321D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 3.2V±1.5%, 150mA, +CE, CL, AE(Mode)
W32
TK11132M
Toko America
SOT-23L-6
Linear voltage regulator IC
LDO, 3.2V±1.5%, 200mA, -CE
W32
TK11132S
Toko America
SOT-23-5
Linear voltage regulator IC
LDO, 3.2V±1.5%, 200mA, -CE
W33
MIC5255-3.3BML
Micrel
MLF-6
Linear voltage regulator IC
LDO, 3.3V±1%, 150mA, +CE
W33
MIC5255-3.3YML
Micrel
MLF-6
Linear voltage regulator IC
LDO, 3.3V±1%, 150mA, +CE, Pb-free
W33
PDTC143TT

SOT-23
NPN transistor
Sw, 50V, 100mA, 250mW, R1=4.7k
W33
R1163N331D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 3.3V±1.5%, 150mA, +CE, CL, AE(Mode)
W33
TK11133M
Toko America
SOT-23L-6
Linear voltage regulator IC
LDO, 3.3V±1.5%, 200mA, -CE
W33
TK11133S
Toko America
SOT-23-5
Linear voltage regulator IC
LDO, 3.3V±1.5%, 200mA, -CE
W34
R1163N341D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 3.4V±1.5%, 150mA, +CE, CL, AE(Mode)
W34
TK11134M
Toko America
SOT-23L-6
Linear voltage regulator IC
LDO, 3.4V±1.5%, 200mA, -CE
W34
TK11134S
Toko America
SOT-23-5
Linear voltage regulator IC
LDO, 3.4V±1.5%, 200mA, -CE
W35
R1163N351D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 3.5V±1.5%, 150mA, +CE, CL, AE(Mode)
W35
SMTPB220
SGS-Thomson Microelectronics
DO-214AB
Transient voltage supressor
Vrwm=220V, 100A, 5W(1ms), Bidir.
W35
TK11135M
Toko America
SOT-23L-6
Linear voltage regulator IC
LDO, 3.5V±1.5%, 200mA, -CE
W35
TK11135S
Toko America
SOT-23-5
Linear voltage regulator IC
LDO, 3.5V±1.5%, 200mA, -CE
W36
R1163N361D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 3.6V±1.5%, 150mA, +CE, CL, AE(Mode)
W36
TK11136M
Toko America
SOT-23L-6
Linear voltage regulator IC
LDO, 3.6V±1.5%, 200mA, -CE
W36
TK11136S
Toko America
SOT-23-5
Linear voltage regulator IC
LDO, 3.6V±1.5%, 200mA, -CE
W37
R1163N371D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 3.7V±1.5%, 150mA, +CE, CL, AE(Mode)
W37
TK11137M
Toko America
SOT-23L-6
Linear voltage regulator IC
LDO, 3.7V±1.5%, 200mA, -CE
W37
TK11137S
Toko America
SOT-23-5
Linear voltage regulator IC
LDO, 3.7V±1.5%, 200mA, -CE
W38
R1163N381D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 3.8V±1.5%, 150mA, +CE, CL, AE(Mode)
W38
TK11138M
Toko America
SOT-23L-6
Linear voltage regulator IC
LDO, 3.8V±1.5%, 200mA, -CE
W38
TK11138S
Toko America
SOT-23-5
Linear voltage regulator IC
LDO, 3.8V±1.5%, 200mA, -CE
W39
R1163N391D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 3.9V±1.5%, 150mA, +CE, CL, AE(Mode)
W39
SMTPB240
SGS-Thomson Microelectronics
DO-214AB
Transient voltage supressor
Vrwm=240V, 100A, 5W(1ms), Bidir.
W39
TK11139M
Toko America
SOT-23L-6
Linear voltage regulator IC
LDO, 3.9V±1.5%, 200mA, -CE
W39
TK11139S
Toko America
SOT-23-5
Linear voltage regulator IC
LDO, 3.9V±1.5%, 200mA, -CE
W3W
CMSZDA2V4
Central Semiconductor
SOT-323
Zener diode
Dual, 2.2..2.6V, Zzt=100, 63mA, 275mW