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 'WY'
Tap on the package name to see a picture of it
Marking
Name
Manufacturer/Case
Function
WY
BZT52B43
PanJIT Semiconductor
SOD-123
SOD-123
Zener diode
43V±2%, Izt=5mA, Zzt=100, 410mW
43V±2%, Izt=5mA, Zzt=100, 410mW
WY
BZT52C2V0
Diodes
SOD-123
SOD-123
Zener diode
2V±5%, Izt=5mA, Zzt=100, 500mW
2V±5%, Izt=5mA, Zzt=100, 500mW
WY
BZT52C2V0
Diodes
SOD-123
SOD-123
Zener diode
2V±5%, Izt=5mA, Zzt=100, 500mW
2V±5%, Izt=5mA, Zzt=100, 500mW
WY
BZT52C43
Won-Top Electronics
SOD-123
SOD-123
Zener diode
43V±5%, Izt=2.5mA, Zzt=100, 410mW
43V±5%, Izt=2.5mA, Zzt=100, 410mW
WY
BZT52C43-V
Vishay Semiconductor
SOD-123
SOD-123
Zener diode
43V±5%, Izt=5mA, Zzt=60, 500mW
43V±5%, Izt=5mA, Zzt=60, 500mW
WY
BZT5-2C43S
PanJIT Semiconductor
SOD-323
SOD-323
Zener diode
43V±5%, Izt=5mA, Zzt=100, 200mW
43V±5%, Izt=5mA, Zzt=100, 200mW
WY
BZT52C2V0S
Diodes
SOD-323
SOD-323
Zener diode
2V±5%, Izt=5mA, Zzt=100, 200mW
2V±5%, Izt=5mA, Zzt=100, 200mW
WY
BZT52C2V0S
Diodes
SOD-323
SOD-323
Zener diode
2V±5%, Izt=5mA, Zzt=100, 200mW
2V±5%, Izt=5mA, Zzt=100, 200mW
WY
BZX384C43-V
Vishay Semiconductor
SOD-323
SOD-323
Zener diode
43V±5%, Izt=2mA, Zzt=45, 200mW
43V±5%, Izt=2mA, Zzt=45, 200mW
WY
LM3Z2V0T1G
Leshan Radio Company
SOD-323
SOD-323
Zener diode
1.91..2.09V, Izt=5mA, 200mW
1.91..2.09V, Izt=5mA, 200mW
WY
MM3Z2V0
Secos
SOD-323
SOD-323
Zener diode
1.91..2.09V, Izt=5mA, Zzt=100, 200mW
1.91..2.09V, Izt=5mA, Zzt=100, 200mW
WY
PZU15B3A/DG
NXP Semiconductors
SOD-323
SOD-323
Zener diode
14.85..15.52V, Zzt=15(Iz=5mA), 320mW, H-free
14.85..15.52V, Zzt=15(Iz=5mA), 320mW, H-free
WY
BZT52C43-F
TAITRON Components
SOD-123F
SOD-123F
Zener diode
40..46V, Izt=5mA, 410mW
40..46V, Izt=5mA, 410mW
WY
BZT52C43WS
TAITRON Components
SOD-323F
SOD-323F
Zener diode
40.85..45.15V, Izt=5.0mA, 200mW
40.85..45.15V, Izt=5.0mA, 200mW
WY
BZX384C43-F
TAITRON Components
SOD-323F
SOD-323F
Zener diode
40.0..46.0V, Izt=2.0mA, 200mW
40.0..46.0V, Izt=2.0mA, 200mW
WY
BZT52C2V0T
Diodes
SOD-523
SOD-523
Zener diode
2.0V±5%, Izt=5mA, Zzt=100, 150mW
2.0V±5%, Izt=5mA, Zzt=100, 150mW
WY
BZT52C43WT
TAITRON Components
SOD-523
SOD-523
Zener diode
40.85..45.15V, Izt=5mA, Zzt=150, 200mW
40.85..45.15V, Izt=5mA, Zzt=150, 200mW
WY
BZX584C43
PanJIT Semiconductor
SOD-523
SOD-523
Zener diode
40..46V, Izt=2mA, Zzt=150, 200mW
40..46V, Izt=2mA, Zzt=150, 200mW
WY
LM5Z2V0T1G
Leshan Radio Company
SOD-523
SOD-523
Zener diode
1.91..2.09V, Izt=5mA, 200mW
1.91..2.09V, Izt=5mA, 200mW
WY
BZT52C43WU
TAITRON Components
SOD-723
SOD-723
Zener diode
40.85..45.15V, Izt=5mA, Zzt=150, 200mW
40.85..45.15V, Izt=5mA, Zzt=150, 200mW
WY
BZX784C43
PanJIT Semiconductor
SOD-723
SOD-723
Zener diode
40.85..45.15V, Zzt=150, Izt=5mA, 200mW
40.85..45.15V, Zzt=150, Izt=5mA, 200mW
WY
KDZ36VVY
Korea Electronics
VSC
VSC
Zener diode
35.07..36.87V, Izt=2mA, Zzt=300, 100mW
35.07..36.87V, Izt=2mA, Zzt=300, 100mW
WY
EC76SMAJ11C
E-CMOS
DO-214AC
DO-214AC
Transient voltage supressor
Vbr=12.2..14.9V, Vrwm=11V, Ipp=19.9A, 400W(1ms), Bidir.
Vbr=12.2..14.9V, Vrwm=11V, Ipp=19.9A, 400W(1ms), Bidir.
WY
P4SMAJ100C
PanJIT Semiconductor
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=100V, Vbr=111..141.0V, Ipp=2.2A, 400W(1ms), Bidir.
Vrwm=100V, Vbr=111..141.0V, Ipp=2.2A, 400W(1ms), Bidir.
WY
P4SMAJ100C
Shanghai Lunsure Electronic Technology
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=100V, Vbr=111..136V, Ipp=2.2A, 400W(1ms), Bidir.
Vrwm=100V, Vbr=111..136V, Ipp=2.2A, 400W(1ms), Bidir.
WY
P4SMAJ100C
Won-Top Electronics
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=100V, Vbr=111..141.0V, Ipp=2.2A, 400W(1ms), Bidir.
Vrwm=100V, Vbr=111..141.0V, Ipp=2.2A, 400W(1ms), Bidir.
WY
P4SMAJ11C
Shanghai Lunsure Electronic Technology
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=11V, Vbr=12.2..14.9V, Ipp=20.0A, 400W(1ms), Bidir.
Vrwm=11V, Vbr=12.2..14.9V, Ipp=20.0A, 400W(1ms), Bidir.
WY
SMAJ100CG
First Semiconductor
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=100V, Vbr=111..141.0V, Ipp=2.2A, 400W(1ms), Bidir.
Vrwm=100V, Vbr=111..141.0V, Ipp=2.2A, 400W(1ms), Bidir.
WY
SMAJ11C
Socay Electronics
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=11.0V, Vbr=12.20..14.90V, Ipp=19.90A, 400W(1ms), Bidir.
Vrwm=11.0V, Vbr=12.20..14.90V, Ipp=19.90A, 400W(1ms), Bidir.
WY
SMAJ11C
Vishay Semiconductor
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=11V, Vbr=12.2..13.5V, 19.9A, 400W(1ms), Bidir.
Vrwm=11V, Vbr=12.2..13.5V, 19.9A, 400W(1ms), Bidir.
WY
SMAJ210CG
First Semiconductor
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=210V, Vbr=233..296.1V, Ipp=1.1A, 400W(1ms), Bidir.
Vrwm=210V, Vbr=233..296.1V, Ipp=1.1A, 400W(1ms), Bidir.
WY
TV04A110KB-G
Comchip Technology
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=11.0V, Vbr=12.20..14.90V, Ipp=19.90A, 400W(1ms), Bidir.
Vrwm=11.0V, Vbr=12.20..14.90V, Ipp=19.90A, 400W(1ms), Bidir.
WY
BZX284-B6V2
Philips
SOD-110
SOD-110
Zener diode
6.2V±2%, If=250mA, 400mW
6.2V±2%, If=250mA, 400mW
WY
2SC2859-GR
Toshiba
SC-59
SC-59
NPN transistor
AF, 35V, 500mA, 150mW, B=200..400, 200MHz
AF, 35V, 500mA, 150mW, B=200..400, 200MHz
WY
2SC2859-Y
Toshiba
SC-59
SC-59
NPN transistor
AF, 35V, 500mA, 150mW, B=120..240, 200MHz
AF, 35V, 500mA, 150mW, B=120..240, 200MHz
WY
2SC3915
Sanyo Electric
SOT-23
SOT-23
NPN transistor
Sw, 50V, 500mA, 200mW, 250MHz, R1/R2=2.2k/2.2k
Sw, 50V, 500mA, 200mW, 250MHz, R1/R2=2.2k/2.2k
WY
BZX84B43
PanJIT Semiconductor
SOT-23
SOT-23
Zener diode
42.14..43.86V, Zzt=150, Izt=5mA, 410mW
42.14..43.86V, Zzt=150, Izt=5mA, 410mW
WY
BZX84C43
Won-Top Electronics
SOT-23
SOT-23
Zener diode
40..46V, Zzt=150, Izt=5mA, 350mW
40..46V, Zzt=150, Izt=5mA, 350mW
WY
GMA3876-Y
Guilin Strong Micro Electronics
SOT-23
SOT-23
NPN transistor
LF, Amp, 35V, 500mA, 225mW, B=120..240, 300MHz
LF, Amp, 35V, 500mA, 225mW, B=120..240, 300MHz
WY
KTC3876S-Y
Korea Electronics
SOT-23
SOT-23
NPN transistor
GP, 35V, 500mA, 150mW, B=120..240, 200MHz
GP, 35V, 500mA, 150mW, B=120..240, 200MHz
WY
2SC4118-Y
Toshiba
SOT-323
SOT-323
NPN transistor
AF-Drv, Sw, 35V, 500mA, 100mW, B=120..240, 200MHz
AF-Drv, Sw, 35V, 500mA, 100mW, B=120..240, 200MHz
WY
BZX84C43W
Won-Top Electronics
SOT-323
SOT-323
Zener diode
40..46V, Zzt=150, Izt=5mA, 200mW
40..46V, Zzt=150, Izt=5mA, 200mW
WY
TZTC43WS
TAITRON Components
SOT-323
SOT-323
Zener diode
40.85..45.15V, Izt=5mA, Zzt=150, 200mW
40.85..45.15V, Izt=5mA, Zzt=150, 200mW
WY
2SA1483-Y
Toshiba
SOT-89
SOT-89
PNP transistor
Sw, 60V, 200mA, 1W, B=120..240, >100MHz
Sw, 60V, 200mA, 1W, B=120..240, >100MHz
WY
2SJ484
Renessas
SOT-89
SOT-89
MOSFET p-type
V-MOS, LogL, 30V, 2A, 1W, <0.23 (1A)
V-MOS, LogL, 30V, 2A, 1W, <0.23 (1A)
WY
KTA1666-Y
Korea Electronics
SOT-89
SOT-89
PNP transistor
AF, Sw, 50V, 2A, 500mW, B=120..240, 120MHz
AF, Sw, 50V, 2A, 500mW, B=120..240, 120MHz
WY
BCR139L3
Infineon Technologies
TSLP-3
TSLP-3
NPN transistor
Sw, 50V, 100mA, 250mW, R1=22k, 150MHz
Sw, 50V, 100mA, 250mW, R1=22k, 150MHz
WY
74LVC1G125FS3
Diodes
X2-DFN0808-4
X2-DFN0808-4
CMOS logic IC
Bus buffer gate with 3-state output
Bus buffer gate with 3-state output
WY
BD46442G
Rohm
SSOP-5
SSOP-5
Voltage detector IC
4.4V±1%, -MR, -Reset PPO, 200ms
4.4V±1%, -MR, -Reset PPO, 200ms
WY
R5325N032B
Ricoh
SOT-23-6
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=1.8V/1.8V±1%, 150mA, +CE, CL
LDO, Dual out, Vout1/Vout2=1.8V/1.8V±1%, 150mA, +CE, CL
WY
BZX84C43TW
PanJIT Semiconductor
SOT-363
SOT-363
Zener diode
Triple, 42.14..43.86V, Zzt=150, Izt=5mA, 200mW
Triple, 42.14..43.86V, Zzt=150, Izt=5mA, 200mW
WY
RP201K301B
Ricoh
DFN1212-6
DFN1212-6
Linear voltage regulator IC
LDO, 3.0V±1%, 150mA, +CE, AE(Mode)
LDO, 3.0V±1%, 150mA, +CE, AE(Mode)
WY-
RT9818A-37PB
Richtek Technology
SOT-23-5
SOT-23-5
Voltage detector IC
3.7V±1.5%, -Reset ODO
3.7V±1.5%, -Reset ODO
WY-
2SC5820
Renessas
CMPAK-4
CMPAK-4
NPN transistor
HF, LN, 12V, 35mA, 100mW, 20GHz, B=70..150
HF, LN, 12V, 35mA, 100mW, 20GHz, B=70..150
WY1
BZX84-B33
NXP Semiconductors
SOT-23
SOT-23
Zener diode
33V±2.5%, Zzt=80, Izt=5mA, 250mW
33V±2.5%, Zzt=80, Izt=5mA, 250mW
WY2
BZX84-B36
NXP Semiconductors
SOT-23
SOT-23
Zener diode
36V±2.5%, Zzt=90, Izt=5mA, 250mW
36V±2.5%, Zzt=90, Izt=5mA, 250mW
WY=
RT9818A-37GB
Richtek Technology
SOT-23-5
SOT-23-5
Voltage detector IC
3.7V±1.5%, -Reset ODO
3.7V±1.5%, -Reset ODO
WYs
BCR139
Infineon Technologies
SOT-23
SOT-23
NPN transistor
Sw, 50V, 100mA, 200mW, R1=22k, 150MHz
Sw, 50V, 100mA, 200mW, R1=22k, 150MHz
WYs
BCR139T
Infineon Technologies
SOT-416
SOT-416
NPN transistor
Sw, 50V, 100mA, 250mW, R1=22k, 150MHz
Sw, 50V, 100mA, 250mW, R1=22k, 150MHz
WYs
BCR139F
Infineon Technologies
TSFP-3
TSFP-3
NPN transistor
Sw, 50V, 100mA, 250mW, R1=22k, 150MHz
Sw, 50V, 100mA, 250mW, R1=22k, 150MHz
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