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 'W9'

Marking
Name
Manufacturer/Case
Function
W9
AP8822C-39GA
Anwell Semiconductor
SOT-23
Voltage detector IC
3.9V±2%, -Reset PPO, 200ms, Halogen-fre
W9
AP8822C-39GI
Anwell Semiconductor
SC-82
Voltage detector IC
3.9V±2%, -Reset PPO, 200ms, Halogen-fre
W9
AP8822C-39GS
Anwell Semiconductor
SC-82S
Voltage detector IC
3.9V±2%, -Reset PPO, 200ms, Halogen-fre
W9
AP8822C-39GT
Anwell Semiconductor
SC-70
Voltage detector IC
3.9V±2%, -Reset PPO, 200ms, Halogen-fre
W9
AP8822C-39PA
Anwell Semiconductor
SOT-23
Voltage detector IC
3.9V±2%, -Reset PPO, 200ms
W9
AP8822C-39PI
Anwell Semiconductor
SC-82
Voltage detector IC
3.9V±2%, -Reset PPO, 200ms
W9
AP8822C-39PS
Anwell Semiconductor
SC-82S
Voltage detector IC
3.9V±2%, -Reset PPO, 200ms
W9
AP8822C-39PT
Anwell Semiconductor
SC-70
Voltage detector IC
3.9V±2%, -Reset PPO, 200ms
W9
BD46411G
Rohm
SSOP-5
Voltage detector IC
4.1V±1%, -MR, -Reset PPO, 100ms
W9
BZT52B5V1
PanJIT Semiconductor
SOD-123
Zener diode
5.1V±2%, Izt=5mA, Zzt=60, 410mW
W9
BZT52B5V1S
Micro Commercial Components
SOD-323
Zener diode
5.0..5.2V, Izt=5mA, Zzt=60, 200mW
W9
BZT52C5V1-F
TAITRON Components
SOD-123F
Zener diode
4.8..5.4V, Izt=5mA, 410mW
W9
BZT52C5V1-V
Vishay Semiconductor
SOD-123
Zener diode
5.1V±5%, Izt=5mA, Zzt=60, 500mW
W9
BZT52C5V1S
PanJIT Semiconductor
SOD-323
Zener diode
5.1V±5%, Izt=5mA, Zzt=60, 200mW
W9
BZT52C5V1WS
TAITRON Components
SOD-323F
Zener diode
4.85..5.36V, Izt=5.0mA, 200mW
W9
BZT52C5V1WT
TAITRON Components
SOD-523
Zener diode
4.85..5.36V, Izt=5mA, Zzt=60, 200mW
W9
BZT52C5V1WU
TAITRON Components
SOD-723
Zener diode
4.85..5.36V, Izt=5mA, Zzt=60, 200mW
W9
BZT52C5V6
Diodes
SOD-123
Zener diode
5.6V±5%, Izt=5mA, Zzt=40, 500mW
W9
BZT52C5V6
Diodes
SOD-123
Zener diode
5.6V±5%, Izt=5mA, Zzt=40, 500mW
W9
BZT52C5V6S
Diodes
SOD-323
Zener diode
5.6V±5%, Izt=5mA, Zzt=40, 200mW
W9
BZT52C5V6S
Diodes
SOD-323
Zener diode
5.6V±5%, Izt=5mA, Zzt=40, 200mW
W9
BZT52C5V6T
Diodes
SOD-523
Zener diode
5.6V±5%, Izt=5mA, Zzt=40, 150mW
W9
BZV49-C4V3
Zetex
SOT-89
Zener diode
4.3V±5%, Izt=5mA, 1W
W9
BZX384C5V1-F
TAITRON Components
SOD-323F
Zener diode
4.8..5.4V, Izt=5.0mA, 200mW
W9
BZX384C5V1-V
Vishay Semiconductor
SOD-323
Zener diode
5.1V±5%, Izt=5mA, Zzt=40, 200mW
W9
BZX584C5V1
PanJIT Semiconductor
SOD-523
Zener diode
4.8..5.4V, Izt=5mA, Zzt=60, 200mW
W9
BZX784C5V1
PanJIT Semiconductor
SOD-723
Zener diode
4.85..5.36V, Zzt=60, Izt=5mA, 200mW
W9
BZX84B5V1
PanJIT Semiconductor
SOT-23
Zener diode
5.0..5.20V, Zzt=60, Izt=5mA, 410mW
W9
BZX84C4V3
Central Semiconductor
SOT-23
Zener diode
4.0..4.6V, Zzt=90, Izt=5mA, 350mW
W9
BZX84C4V3LT1
ON Semiconductor
SOT-23
Zener diode
4.0..4.6V, Zzt=90, Izt=5mA, 225mW
W9
BZX84C4V3LT1G
ON Semiconductor
SOT-23
Zener diode
4.0..4.6V, Zzt=90, Izt=5mA, 225mW, Pb-free
W9
BZX84C5V1
Won-Top Electronics
SOT-23
Zener diode
4.8..5.4V, Zzt=60, Izt=5mA, 350mW
W9
BZX84C5V1TW
PanJIT Semiconductor
SOT-363
Zener diode
Triple, 5.0..5.20V, Zzt=60, Izt=5mA, 200mW
W9
BZX84C5V1W
Won-Top Electronics
SOT-323
Zener diode
4.8..5.4V, Zzt=60, Izt=5mA, 200mW
W9
BZX88-C4V3
Ferranti Semiconductors
SOT-23
Zener diode
4.3V±5%, Iz=5mA, 200mW
W9
CZRW55C5V6-G
Comchip Technology
SOD-123
Zener diode
5.6..6.0V, Zzt=40, Izt=5mA, 500mW
W9
DPA05
Sanyo Electric
CP
PIN diode
Dual, FM/AM-tun, AGC, 50V, 50mA, Vf=0.95V(50mA), 0.25pF
W9
ELM7639LBB
ELM Technology
SOT-23
Voltage detector IC
3.9V±2%, -Reset PPO, 500ms
W9
ELM9739CAB
ELM Technology
SOT-89
Voltage detector IC
3.9V±2.5%, +Reset PPO
W9
ELM9739CBB
ELM Technology
SOT-23
Voltage detector IC
3.9V±2.5%, +Reset PPO
W9
FMW9
Rohm
SOT-23-5
NPN transistor
Dual, HF, 20V, 50mA, >1400MHz
W9
LBZT52C5V6T1G
Leshan Radio Company
SOD-123
Zener diode
5.2..6V, Izt=5mA, 500mW
W9
LBZX84C4V3L
Leshan Radio Company
SOT-23
Zener diode
4..4.6V, Izt=5mA, 225mW
W9
MEZ02-5.1-D3
Matsuki Electronic Company
SOD-323
Zener diode
4.85..5.36V, Izt=5mA, Zzt=60, 200mW
W9
MM3Z5V6
Secos
SOD-323
Zener diode
5.2..6.0V, Izt=5mA, Zzt=40, 200mW
W9
NTE508SM
NTE Electronics
SOT-23
Zener diode
4.3V±5%, If=250mA, 300mW
W9
R1163D191D
Ricoh
SON-6
Linear voltage regulator IC
LDO, 1.9V±1.5%, 150mA, +CE, CL, AE(mode)
W9
R1210N391D
Ricoh
SOT-23-5
DC/DC voltage converter IC
PWM step-up, 3.9V, 180kHz
W9
R3111Q391C
Ricoh
SC-82AB
Voltage detector IC
3.9V±2%, -Reset ODO
W9
R5325N009B
Ricoh
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=1.5V/1.6V±1%, 150mA, +CE, CL
W9
TZTC5V1WS
TAITRON Components
SOT-323
Zener diode
4.85..5.36V, Izt=5mA, Zzt=60, 200mW
W9-
BAP63-05W
Philips
SOT-323
PIN diode
Dual, RF, 50V, 100mA, 240mW, 0.35pF, 1.8(10mA/100MHz)
W9-
RT9193-17PB
Richtek Technology
SOT-23-5
Linear voltage regulator IC
LDO, 1.7V±1%, 300mA, +CE
W91
BFP193TW
Silicon General
SOT-343
NPN transistor
UHF, 20V, 80mA, 580mW, B=50..200, 8GHz
W92
TK11122M
Toko America
SOT-23L-6
Linear voltage regulator IC
LDO, 2.2V±1.5%, 200mA, -CE
W93
S593TRW
Vishay Semiconductor
SOT-343R
Monolithic microwave IC
UHF, 8V, 30mA, 200mW, Idss=50..500µA
W94
S594TRW
Vishay Semiconductor
SOT-343R
Monolithic microwave IC
UHF, 8V, 20mA, 160mW, Idss=50..500µA
W99
S949TRW
Vishay Semiconductor
SOT-343R
Monolithic microwave IC
UHF, 12V, 30mA, 200mW, Idss=50..500µA
W9W
CMSZDA4V3
Central Semiconductor
SOT-323
Zener diode
Dual, 4.0..4.6V, Zzt=90, 40mA, 275mW