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 'WF'
Marking
Name
Manufacturer/Case
Function
WF
2SK322-F
Renessas
SOT-23
SOT-23
FET n-type
HF, 15V, 50mA, 150mW, Idss=10..20mA, Up<3V
HF, 15V, 50mA, 150mW, Idss=10..20mA, Up<3V
WF
APX803S05-31SR
Diodes
SOT-23
SOT-23
Voltage detector IC
3.08V±1.5%, -Reset ODO, Rdt=50ms
3.08V±1.5%, -Reset ODO, Rdt=50ms
WF
BCR112L3
Infineon Technologies
TSLP-3
TSLP-3
NPN transistor
Sw, 50V, 100mA, 250mW, R1/R2=4.7k/4.7k, 140MHz
Sw, 50V, 100mA, 250mW, R1/R2=4.7k/4.7k, 140MHz
WF
BD46351G
Rohm
SSOP-5
SSOP-5
Voltage detector IC
3.5V±1%, -MR, -Reset PPO, 100ms
3.5V±1%, -MR, -Reset PPO, 100ms
WF
BZT52-C9V1S
PanJIT Semiconductor
SOD-323
SOD-323
Zener diode
9.1V±5%, Izt=5mA, Zzt=15, 200mW
9.1V±5%, Izt=5mA, Zzt=15, 200mW
WF
BZT52B9V1
PanJIT Semiconductor
SOD-123
SOD-123
Zener diode
9.1V±2%, Izt=5mA, Zzt=10, 410mW
9.1V±2%, Izt=5mA, Zzt=10, 410mW
WF
BZT52B9V1S
Micro Commercial Components
SOD-323
SOD-323
Zener diode
8.92..9.28V, Izt=5mA, Zzt=15, 200mW
8.92..9.28V, Izt=5mA, Zzt=15, 200mW
WF
BZT52C10
Diodes
SOD-123
SOD-123
Zener diode
10V±5%, Izt=5mA, Zzt=20, 500mW
10V±5%, Izt=5mA, Zzt=20, 500mW
WF
BZT52C10
Diodes
SOD-123
SOD-123
Zener diode
10V±5%, Izt=5mA, Zzt=20, 500mW
10V±5%, Izt=5mA, Zzt=20, 500mW
WF
BZT52C10-G
Taiwan Semiconductor Company
SOD-123
SOD-123
Zener diode
9.50..10.50V, Izt=5mA, Zzt=20, 350mW
9.50..10.50V, Izt=5mA, Zzt=20, 350mW
WF
BZT52C10S
Diodes
SOD-323
SOD-323
Zener diode
10V±5%, Izt=5mA, Zzt=20, 200mW
10V±5%, Izt=5mA, Zzt=20, 200mW
WF
BZT52C10S
Diodes
SOD-323
SOD-323
Zener diode
10V±5%, Izt=5mA, Zzt=20, 200mW
10V±5%, Izt=5mA, Zzt=20, 200mW
WF
BZT52C10T
Diodes
SOD-523
SOD-523
Zener diode
10V±5%, Izt=5mA, Zzt=20, 150mW
10V±5%, Izt=5mA, Zzt=20, 150mW
WF
BZT52C9V1
Won-Top Electronics
SOD-123
SOD-123
Zener diode
9.1V±5%, Izt=5mA, Zzt=15, 410mW
9.1V±5%, Izt=5mA, Zzt=15, 410mW
WF
BZT52C9V1-F
TAITRON Components
SOD-123F
SOD-123F
Zener diode
8.5..9.6V, Izt=5mA, 410mW
8.5..9.6V, Izt=5mA, 410mW
WF
BZT52C9V1-V
Vishay Semiconductor
SOD-123
SOD-123
Zener diode
9.1V±5%, Izt=5mA, Zzt=15, 500mW
9.1V±5%, Izt=5mA, Zzt=15, 500mW
WF
BZT52C9V1WS
TAITRON Components
SOD-323F
SOD-323F
Zener diode
8.65..9.56V, Izt=5.0mA, 200mW
8.65..9.56V, Izt=5.0mA, 200mW
WF
BZT52C9V1WT
TAITRON Components
SOD-523
SOD-523
Zener diode
8.65..9.56V, Izt=5mA, Zzt=15, 200mW
8.65..9.56V, Izt=5mA, Zzt=15, 200mW
WF
BZT52C9V1WU
TAITRON Components
SOD-723
SOD-723
Zener diode
8.65..9.56V, Izt=5mA, Zzt=15, 200mW
8.65..9.56V, Izt=5mA, Zzt=15, 200mW
WF
BZX384C9V1-F
TAITRON Components
SOD-323F
SOD-323F
Zener diode
8.5..9.6V, Izt=5.0mA, 200mW
8.5..9.6V, Izt=5.0mA, 200mW
WF
BZX384C9V1-V
Vishay Semiconductor
SOD-323
SOD-323
Zener diode
9.1V±5%, Izt=5mA, Zzt=6, 200mW
9.1V±5%, Izt=5mA, Zzt=6, 200mW
WF
BZX584C9V1
PanJIT Semiconductor
SOD-523
SOD-523
Zener diode
8.5..9.6V, Izt=5mA, Zzt=15, 200mW
8.5..9.6V, Izt=5mA, Zzt=15, 200mW
WF
BZX784C9V1
PanJIT Semiconductor
SOD-723
SOD-723
Zener diode
8.65..9.56V, Zzt=15, Izt=5mA, 200mW
8.65..9.56V, Zzt=15, Izt=5mA, 200mW
WF
BZX84B9V1
PanJIT Semiconductor
SOT-23
SOT-23
Zener diode
8.92..9.28V, Zzt=15, Izt=5mA, 410mW
8.92..9.28V, Zzt=15, Izt=5mA, 410mW
WF
BZX84C9V1
Won-Top Electronics
SOT-23
SOT-23
Zener diode
8.5..9.6V, Zzt=15, Izt=5mA, 350mW
8.5..9.6V, Zzt=15, Izt=5mA, 350mW
WF
BZX84C9V1TW
PanJIT Semiconductor
SOT-363
SOT-363
Zener diode
Triple, 8.92..9.28V, Zzt=15, Izt=5mA, 200mW
Triple, 8.92..9.28V, Zzt=15, Izt=5mA, 200mW
WF
BZX84C9V1W
Won-Top Electronics
SOT-323
SOT-323
Zener diode
8.5..9.6V, Zzt=15, Izt=5mA, 200mW
8.5..9.6V, Zzt=15, Izt=5mA, 200mW
WF
CHDTC143EEPT
Chenmko Enterprise
SOT-416
SOT-416
NPN transistor
Sw, 50V, 100mA, 250MHz, R1/R2=4.7k/4.7k
Sw, 50V, 100mA, 250MHz, R1/R2=4.7k/4.7k
WF
CZRW55C10-G
Comchip Technology
SOD-123
SOD-123
Zener diode
10.0..10.60V, Zzt=20, Izt=5mA, 500mW
10.0..10.60V, Zzt=20, Izt=5mA, 500mW
WF
EC76SMAJ6.0C
E-CMOS
DO-214AC
DO-214AC
Transient voltage supressor
Vbr=6.67..8.15V, Vrwm=6.0V, Ipp=35.1A, 400W(1ms), Bidir.
Vbr=6.67..8.15V, Vrwm=6.0V, Ipp=35.1A, 400W(1ms), Bidir.
WF
FES1DWSRTG
Fagor Electronica
SOD-123W
SOD-123W
Diode
U-fast recov. rectif, 200V, 1A, Vf<0.9V(1A), <25ns
U-fast recov. rectif, 200V, 1A, Vf<0.9V(1A), <25ns
WF
LBZT52C10T1G
Leshan Radio Company
SOD-123
SOD-123
Zener diode
9.4..10.6V, Izt=5mA, 500mW
9.4..10.6V, Izt=5mA, 500mW
WF
MEZ02-9.1-D3
Matsuki Electronic Company
SOD-323
SOD-323
Zener diode
8.65..9.56V, Izt=5mA, Zzt=10, 200mW
8.65..9.56V, Izt=5mA, Zzt=10, 200mW
WF
MM3Z10V
Secos
SOD-323
SOD-323
Zener diode
9.4..10.6V, Izt=5mA, Zzt=20, 200mW
9.4..10.6V, Izt=5mA, Zzt=20, 200mW
WF
P4SMAJ58C
Won-Top Electronics
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=58V, Vbr=64.4..81.6V, Ipp=3.9A, 400W(1ms), Bidir.
Vrwm=58V, Vbr=64.4..81.6V, Ipp=3.9A, 400W(1ms), Bidir.
WF
P4SMAJ58C
Shanghai Lunsure Electronic Technology
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=58V, Vbr=64.4..78.7V, Ipp=3.9A, 400W(1ms), Bidir.
Vrwm=58V, Vbr=64.4..78.7V, Ipp=3.9A, 400W(1ms), Bidir.
WF
P4SMAJ58C
PanJIT Semiconductor
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=58V, Vbr=64.4..81.6V, Ipp=3.9A, 400W(1ms), Bidir.
Vrwm=58V, Vbr=64.4..81.6V, Ipp=3.9A, 400W(1ms), Bidir.
WF
P4SMAJ6.0C
Shanghai Lunsure Electronic Technology
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=6.0V, Vbr=6.67..8.15V, Ipp=35.1A, 400W(1ms), Bidir.
Vrwm=6.0V, Vbr=6.67..8.15V, Ipp=35.1A, 400W(1ms), Bidir.
WF
PT7M6314US46D4
Pericom Technology
SOT-143
SOT-143
Voltage detector IC
4.6V±1.5%, 1570ms, -Reset PPO, -MR
4.6V±1.5%, 1570ms, -Reset PPO, -MR
WF
PZU11B1A/DG
NXP Semiconductors
SOD-323
SOD-323
Zener diode
10.44..10.88V, Zzt=10(Iz=5mA), 320mW, H-free
10.44..10.88V, Zzt=10(Iz=5mA), 320mW, H-free
WF
R1210N451D
Ricoh
SOT-23-5
SOT-23-5
DC/DC voltage converter IC
PWM st-up, 4.5V, 180kHz
PWM st-up, 4.5V, 180kHz
WF
R3132Q46EA3
Ricoh
SOT-143
SOT-143
Voltage detector IC
4.63V±1.5%, -Reset PPO, -MR
4.63V±1.5%, -Reset PPO, -MR
WF
R5325N017B
Ricoh
SOT-23-6
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.9V/2.9V±1%, 150mA, +CE, CL
LDO, Dual out, Vout1/Vout2=2.9V/2.9V±1%, 150mA, +CE, CL
WF
RN5RK331A
Ricoh
SOT-23-5
SOT-23-5
DC/DC voltage converter IC
VFM st-up, Vout=3.3V±1.5%, 500mA
VFM st-up, Vout=3.3V±1.5%, 500mA
WF
RP130K391D
Ricoh
DFN1010-4
DFN1010-4
Linear voltage regulator IC
LDO, LN, +CE, CL, 3.9V±1%, 150mA
LDO, LN, +CE, CL, 3.9V±1%, 150mA
WF
RP201K131B
Ricoh
DFN1212-6
DFN1212-6
Linear voltage regulator IC
LDO, 1.3V±1%, 150mA, +CE, AE(Mode)
LDO, 1.3V±1%, 150mA, +CE, AE(Mode)
WF
RP300K42DA
Ricoh
DFN1010-4B
DFN1010-4B
Voltage detector IC
4.2V±1%, +Reset ODO, -MR, Rdt=200ms
4.2V±1%, +Reset ODO, -MR, Rdt=200ms
WF
SMAJ58CG
First Semiconductor
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=58V, Vbr=64.4..81.6V, Ipp=3.9A, 400W(1ms), Bidir.
Vrwm=58V, Vbr=64.4..81.6V, Ipp=3.9A, 400W(1ms), Bidir.
WF
SMAJ6.0C
Socay Electronics
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=6.0V, Vbr=6.67..8.15V, Ipp=35.09A, 400W(1ms), Bidir.
Vrwm=6.0V, Vbr=6.67..8.15V, Ipp=35.09A, 400W(1ms), Bidir.
WF
SMAJ6.0C
Vishay Semiconductor
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=6.0V, Vbr=6.67..8.15V, 35.1A, 400W(1ms), Bidir.
Vrwm=6.0V, Vbr=6.67..8.15V, 35.1A, 400W(1ms), Bidir.
WF
SMZG3791B
Vishay Semiconductor
DO-215AA
DO-215AA
Zener diode
12V±10%, 105mA, Zzt=7, 1.5W
12V±10%, 105mA, Zzt=7, 1.5W
WF
SMZJ3791B
Vishay Semiconductor
DO-214AA
DO-214AA
Zener diode
12V±10%, 105mA, Zzt=7, 1.5W
12V±10%, 105mA, Zzt=7, 1.5W
WF
TC7SG34AFS
Toshiba
SOT-953
SOT-953
CMOS logic IC
Noninverting buffer
Noninverting buffer
WF
TC7SG34FE
Toshiba
SOT-553
SOT-553
CMOS logic IC
Noninverting buffer
Noninverting buffer
WF
TC7SG34FU
Toshiba
SOT-353
SOT-353
CMOS logic IC
Noninverting buffer
Noninverting buffer
WF
TV04A6V0KB-G
Comchip Technology
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=6.0V, Vbr=6.67..8.15V, Ipp=35.09A, 400W(1ms), Bidir.
Vrwm=6.0V, Vbr=6.67..8.15V, Ipp=35.09A, 400W(1ms), Bidir.
WF
TZTC9V1WS
TAITRON Components
SOT-323
SOT-323
Zener diode
8.65..9.56V, Izt=5mA, Zzt=15, 200mW
8.65..9.56V, Izt=5mA, Zzt=15, 200mW
WF-
2SC5758
Renessas
MFPAK
MFPAK
NPN transistor
UHF/VHF WB-amp., 10V, 80mA, 80mW, B=80..130, <8GHz
UHF/VHF WB-amp., 10V, 80mA, 80mW, B=80..130, <8GHz
WF-
RT9013-1BPB
Richtek Technology
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 1.25V±2%, 500mA, +CE
LDO, 1.25V±2%, 500mA, +CE
WF0
TSDF1205W
Vishay Semiconductor
SOT-343
SOT-343
NPN transistor
UHF-VHF, LN, 9V, 12mA, 40mW, B=50..250, 12GHz
UHF-VHF, LN, 9V, 12mA, 40mW, B=50..250, 12GHz
WF12
WL2805E12-5
Will Semiconductor
SOT-23-5L
SOT-23-5L
Linear voltage regulator IC
LDO, 1.2V±2%, 100mA, +CE
LDO, 1.2V±2%, 100mA, +CE
WF13
WL2805E13-5
Will Semiconductor
SOT-23-5L
SOT-23-5L
Linear voltage regulator IC
LDO, 1.3V±2%, 100mA, +CE
LDO, 1.3V±2%, 100mA, +CE
WF15
WL2805E15-5
Will Semiconductor
SOT-23-5L
SOT-23-5L
Linear voltage regulator IC
LDO, 1.5V±2%, 100mA, +CE
LDO, 1.5V±2%, 100mA, +CE
WF18
WL2805E18-5
Will Semiconductor
SOT-23-5L
SOT-23-5L
Linear voltage regulator IC
LDO, 1.8V±2%, 100mA, +CE
LDO, 1.8V±2%, 100mA, +CE
WF2
TSDF1220W
Vishay Semiconductor
SOT-343
SOT-343
NPN transistor
UHF-VHF, LN, 9V, 40mA, 200mW, B=50..150, 12GHz
UHF-VHF, LN, 9V, 40mA, 200mW, B=50..150, 12GHz
WF25
WL2805E25-5
Will Semiconductor
SOT-23-5L
SOT-23-5L
Linear voltage regulator IC
LDO, 2.5V±2%, 250mA, +CE
LDO, 2.5V±2%, 250mA, +CE
WF28
WL2805E28-5
Will Semiconductor
SOT-23-5L
SOT-23-5L
Linear voltage regulator IC
LDO, 2.8V±2%, 250mA, +CE
LDO, 2.8V±2%, 250mA, +CE
WF30
WL2805E30-5
Will Semiconductor
SOT-23-5L
SOT-23-5L
Linear voltage regulator IC
LDO, 3.0V±2%, 250mA, +CE
LDO, 3.0V±2%, 250mA, +CE
WF33
WL2805E33-5
Will Semiconductor
SOT-23-5L
SOT-23-5L
Linear voltage regulator IC
LDO, 3.0V±2%, 250mA, +CE
LDO, 3.0V±2%, 250mA, +CE
WFE
BFP93AW
Vishay Semiconductor
SOT-343
SOT-343
NPN transistor
VHF/UHF, 20V, 50mA, 200mW, B=50..200, >6GHz
VHF/UHF, 20V, 50mA, 200mW, B=50..200, >6GHz
WFs
BCR08PN
Infineon Technologies
SOT-363
SOT-363
NPN+PNP transistors
Dual, Sw, 50V, 100mA, 250mW, R1/R2=2k2/47k
Dual, Sw, 50V, 100mA, 250mW, R1/R2=2k2/47k
WFs
BCR112
Infineon Technologies
SOT-23
SOT-23
NPN transistor
Sw, 50V, 100mA, 200mW, R1/R2=4.7k/4.7k, 140MHz
Sw, 50V, 100mA, 200mW, R1/R2=4.7k/4.7k, 140MHz
WFs
BCR112F
Infineon Technologies
TSFP-3
TSFP-3
NPN transistor
Sw, 50V, 100mA, 250mW, R1/R2=4.7k/4.7k, 140MHz
Sw, 50V, 100mA, 250mW, R1/R2=4.7k/4.7k, 140MHz
WFs
BCR112T
Infineon Technologies
SOT-416
SOT-416
NPN transistor
Sw, 50V, 100mA, 250mW, R1/R2=4.7k/4.7k, 140MHz
Sw, 50V, 100mA, 250mW, R1/R2=4.7k/4.7k, 140MHz
WFs
BCR112W
Infineon Technologies
SOT-323
SOT-323
NPN transistor
Sw, 50V, 100mA, 200mW, R1/R2=4.7k/4.7k, 140MHz
Sw, 50V, 100mA, 200mW, R1/R2=4.7k/4.7k, 140MHz