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 'WD'

Marking
Name
Manufacturer/Case
Function
WD
2SC5214-D
Isahaya Electronics
SOT-89
NPN transistor
AF-Amp-Drv, 30V, 1A, 500mW, 100MHz, B=90..180
WD
BCR141L3
Infineon Technologies
TSLP-3
NPN transistor
Sw, 50V, 100mA, 250mW, R1/R2=22k/22k, 130MHz
WD
BD46371G
Rohm
SSOP-5
Voltage detector IC
3.7V±1%, -MR, -Reset PPO, 100ms
WD
BZT52B7V5
PanJIT Semiconductor
SOD-123
Zener diode
7.5V±2%, Izt=5mA, Zzt=15, 410mW
WD
BZT52B7V5S
Micro Commercial Components
SOD-323
Zener diode
7.35..7.65V, Izt=5mA, Zzt=15, 200mW
WD
BZT52C7V5-F
TAITRON Components
SOD-123F
Zener diode
7.0..7.9V, Izt=5mA, 410mW
WD
BZT52C7V5-V
Vishay Semiconductor
SOD-123
Zener diode
7.5V±5%, Izt=5mA, Zzt=15, 500mW
WD
BZT52C7V5S
PanJIT Semiconductor
SOD-323
Zener diode
7.5V±5%, Izt=5mA, Zzt=15, 200mW
WD
BZT52C7V5WS
TAITRON Components
SOD-323F
Zener diode
7.13..7.88V, Izt=5.0mA, 200mW
WD
BZT52C7V5WT
TAITRON Components
SOD-523
Zener diode
7.13..7.88V, Izt=5mA, Zzt=15, 200mW
WD
BZT52C7V5WU
TAITRON Components
SOD-723
Zener diode
7.13..7.88V, Izt=5mA, Zzt=15, 200mW
WD
BZT52C8V2
Diodes
SOD-123
Zener diode
8.2V±5%, Izt=5mA, Zzt=15, 500mW
WD
BZT52C8V2
Diodes
SOD-123
Zener diode
8.2V±5%, Izt=5mA, Zzt=15, 500mW
WD
BZT52C8V2S
Diodes
SOD-323
Zener diode
8.2V±5%, Izt=5mA, Zzt=15, 200mW
WD
BZT52C8V2S
Diodes
SOD-323
Zener diode
8.2V±5%, Izt=5mA, Zzt=15, 200mW
WD
BZT52C8V2T
Diodes
SOD-523
Zener diode
8.2V±5%, Izt=5mA, Zzt=15, 150mW
WD
BZX384C7V5-F
TAITRON Components
SOD-323F
Zener diode
7.0..7.9V, Izt=5.0mA, 200mW
WD
BZX384C7V5-V
Vishay Semiconductor
SOD-323
Zener diode
7.5V±5%, Izt=5mA, Zzt=6, 200mW
WD
BZX584C7V5
PanJIT Semiconductor
SOD-523
Zener diode
7.0..7.9V, Izt=5mA, Zzt=15, 200mW
WD
BZX784C7V5
PanJIT Semiconductor
SOD-723
Zener diode
7.13..7.88V, Zzt=15, Izt=5mA, 200mW
WD
BZX84B7V5
PanJIT Semiconductor
SOT-23
Zener diode
7.35..7.65V, Zzt=15, Izt=5mA, 410mW
WD
BZX84C7V5
Won-Top Electronics
SOT-23
Zener diode
7.0..7.9V, Zzt=15, Izt=5mA, 350mW
WD
BZX84C7V5TW
PanJIT Semiconductor
SOT-363
Zener diode
Triple, 7.35..7.65V, Zzt=15, Izt=5mA, 200mW
WD
BZX84C7V5W
Won-Top Electronics
SOT-323
Zener diode
7.0..7.9V, Zzt=15, Izt=5mA, 200mW
WD
CZRW55C8V2-G
Comchip Technology
SOD-123
Zener diode
8.2..8.70V, Zzt=15, Izt=5mA, 500mW
WD
HD74LV1GW06ACM
Renessas
CMPAK-6
Capacitance diode
Dual inverter buffers/drivers (ODO)
WD
LBZT52C8V2T1G
Leshan Radio Company
SOD-123
Zener diode
7.7..8.7V, Izt=5mA, 500mW
WD
MEZ02-7.5-D3
Matsuki Electronic Company
SOD-323
Zener diode
7.13..7.88V, Izt=5mA, Zzt=7, 200mW
WD
MM3Z8V2
Secos
SOD-323
Zener diode
7.7..8.7V, Izt=5mA, Zzt=15, 200mW
WD
MMBD4448WPT
Chenmko Enterprise
SOT-323
Diode
Sw, 80V, 250mA, Vf<1V(100mA), 4ns
WD
P4SMAJ5.0C
Shanghai Lunsure Electronic Technology
DO-214AC
Transient voltage supressor
Vrwm=5V, 41.6A, 400W (1ms), Bidir.
WD
P4SMAJ54C
PanJIT Semiconductor
DO-214AC
Transient voltage supressor
Vrwm=54V, 4.2A, 400W (1ms), Bidir.
WD
PZU10B3A/DG
Philips
SOD-323
Zener diode
10V±2%, If=200mA, 320mW, halogen-free
WD
R1210N431D
Ricoh
SOT-23-5
DC/DC voltage converter IC
PWM step-up, 4.3V, 180kHz
WD
R3132Q30EA8
Ricoh
SOT-143
Voltage detector IC
3.08V±1.5%, -Reset PPO, -MR
WD
R5325N013B
Ricoh
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.7V/1.8V±1%, 150mA, +CE, CL
WD
RN5RK201A
Ricoh
SOT-23-5
DC/DC voltage converter IC
VFM step-up, Vout=2.0V±1.5%
WD
RP130K371D
Ricoh
DFN1010-4
Linear voltage regulator IC
LDO, LN, +CE, CL, 3.7V±1%, 150mA
WD
RP201K111B
Ricoh
DFN1212-6
Linear voltage regulator IC
LDO, 1.1V±1%, 150mA, +CE, AE(Mode)
WD
SMAJ5.0C
Vishay Semiconductor
DO-214AC
Transient voltage supressor
Vrwm=5.0V, Vbr=6.40..7.0V, 41.7A, 400W(1ms), Bidir.
WD
SMZG3790B
Vishay Semiconductor
DO-215AA
Zener diode
11V±10%, 115mA, Zzt=6, 1.5W
WD
SMZJ3790B
Vishay Semiconductor
DO-214AA
Zener diode
11V±10%, 115mA, Zzt=6, 1.5W
WD
TV04A5V0KB-G
Comchip Technology
DO-214AC
Transient voltage supressor
Vrwm=5.0V, Vbr=6.40..7.30V, Ipp=41.67A, 400W(1ms), Bidir.
WD
TZTC7V5WS
TAITRON Components
SOT-323
Zener diode
7.13..7.88V, Izt=5mA, Zzt=15, 200mW
WD-
RT9818C-27PB
Richtek Technology
SOT-23-5
Voltage detector IC
2.7V±1.5%, -Reset ODO, Td=220ms
WD=
RT9818C-27GB
Richtek Technology
SOT-23-5
Voltage detector IC
2.7V±1.5%, -Reset ODO, Td=220ms
WDs
BCR141
Infineon Technologies
SOT-23
NPN transistor
Sw, 50V, 100mA, 200mW, R1/R2=22k/22k, 130MHz
WDs
BCR141F
Infineon Technologies
TSFP-3
NPN transistor
Sw, 50V, 100mA, 250mW, R1/R2=22k/22k, 130MHz
WDs
BCR141T
Infineon Technologies
SOT-416
NPN transistor
Sw, 50V, 100mA, 250mW, R1/R2=22k/22k, 130MHz
WDs
BCR141W
Infineon Technologies
SOT-323
NPN transistor
Sw, 50V, 100mA, 250mW, R1/R2=22k/22k, 130MHz