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 'WY'

Marking
Name
Manufacturer/Case
Function
WY
2SA1483-Y
Toshiba
SOT-89
PNP transistor
Sw, 60V, 200mA, 1W, B=120..240, >100MHz
WY
2SC2859-GR
Toshiba
SC-59
NPN transistor
AF, 35V, 500mA, 150mW, B=200..400, 200MHz
WY
2SC2859-Y
Toshiba
SC-59
NPN transistor
AF, 35V, 500mA, 150mW, B=120..240, 200MHz
WY
2SC3915
Sanyo Electric
SOT-23
NPN transistor
Sw, 50V, 500mA, 200mW, 250MHz, R1/R2=2k2/2k2
WY
2SC4118-Y
Toshiba
SOT-323
NPN transistor
AF-Drv, Sw, 35V, 500mA, 100mW, B=120..240, 200MHz
WY
2SJ484
Renessas
SOT-89
MOSFET p-type
V-MOS, LogL, 30V, 2A, 1W, <0.23(1A)
WY
BCR139L3
Infineon Technologies
TSLP-3
NPN transistor
Sw, 50V, 100mA, 250mW, R1=22k, 150MHz
WY
BD46442G
Rohm
SSOP-5
Voltage detector IC
4.4V±1%, -MR, -Reset PPO, 200ms
WY
BZT52C2V0
Diodes
SOD-123
Zener diode
2V±5%, Izt=5mA, Zzt=100, 500mW
WY
BZT52C2V0
Diodes
SOD-123
Zener diode
2V±5%, Izt=5mA, Zzt=100, 500mW
WY
BZT52C2V0S
Diodes
SOD-323
Zener diode
2V±5%, Izt=5mA, Zzt=100, 200mW
WY
BZT52C2V0S
Diodes
SOD-323
Zener diode
2V±5%, Izt=5mA, Zzt=100, 200mW
WY
BZT52C2V0T
Diodes
SOD-523
Zener diode
2.0V±5%, Izt=5mA, Zzt=100, 150mW
WY
BZT52C43
PanJIT Semiconductor
SOD-123
Zener diode
43V±2%, Izt=5mA, Zzt=100, 410mW
WY
BZT52C43-F
TAITRON Components
SOD-123F
Zener diode
40..46V, Izt=5mA, 410mW
WY
BZT52C43-V
Vishay Semiconductor
SOD-123
Zener diode
43V±5%, Izt=5mA, Zzt=60, 500mW
WY
BZT52C43S
PanJIT Semiconductor
SOD-323
Zener diode
43V±5%, Izt=5mA, Zzt=100, 200mW
WY
BZT52C43WS
TAITRON Components
SOD-323F
Zener diode
40.85..45.15V, Izt=5.0mA, 200mW
WY
BZT52C43WT
TAITRON Components
SOD-523
Zener diode
40.85..45.15V, Izt=5mA, Zzt=150, 200mW
WY
BZT52C43WU
TAITRON Components
SOD-723
Zener diode
40.85..45.15V, Izt=5mA, Zzt=150, 200mW
WY
BZX284-B6V2
Philips
SOD-110
Zener diode
6.2V±2%, If=250mA, 400mW
WY
BZX384C43-F
TAITRON Components
SOD-323F
Zener diode
40.0..46.0V, Izt=2.0mA, 200mW
WY
BZX384C43-V
Vishay Semiconductor
SOD-323
Zener diode
43V±5%, Izt=2mA, Zzt=45, 200mW
WY
BZX584C43
PanJIT Semiconductor
SOD-523
Zener diode
40..46V, Izt=2mA, Zzt=150, 200mW
WY
BZX784C43
PanJIT Semiconductor
SOD-723
Zener diode
40.85..45.15V, Zzt=150, Izt=5mA, 200mW
WY
BZX84B43
PanJIT Semiconductor
SOT-23
Zener diode
42.14..43.86V, Zzt=150, Izt=5mA, 410mW
WY
BZX84C43
Won-Top Electronics
SOT-23
Zener diode
40..46V, Zzt=150, Izt=5mA, 350mW
WY
BZX84C43TW
PanJIT Semiconductor
SOT-363
Zener diode
Triple, 42.14..43.86V, Zzt=150, Izt=5mA, 200mW
WY
BZX84C43W
Won-Top Electronics
SOT-323
Zener diode
40..46V, Zzt=150, Izt=5mA, 200mW
WY
KDZ36VVY
Korea Electronics
VSC
Zener diode
35.07..36.87V, Izt=2mA, Zzt=300, 100mW
WY
KTA1666-Y
Korea Electronics
SOT-89
PNP transistor
AF, Sw, 50V, 2A, 500mW, B=120..240, 120MHz
WY
KTC3876S-Y
Korea Electronics
SOT-23
NPN transistor
GP, 35V, 500mA, 150mW, B=120..240, 200MHz
WY
MM3Z2V0
Secos
SOD-323
Zener diode
1.91..2.09V, Izt=5mA, Zzt=100, 200mW
WY
P4SMAJ100C
PanJIT Semiconductor
DO-214AC
Transient voltage supressor
Vrwm=100V, 2.2A, 400W (1ms), Bidir.
WY
P4SMAJ11C
Shanghai Lunsure Electronic Technology
DO-214AC
Transient voltage supressor
Vrwm=11V, 20A, 400W (1ms), Bidir.
WY
PZU15B3A/DG
Philips
SOD-323
Zener diode
15V±2%, If=200mA, 320mW, halogen-free
WY
R5325N032B
Ricoh
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=1.8V/1.8V±1%, 150mA, +CE, CL
WY
RP201K301B
Ricoh
DFN1212-6
Linear voltage regulator IC
LDO, 3.0V±1%, 150mA, +CE, AE(Mode)
WY
SMAJ11C
Vishay Semiconductor
DO-214AC
Transient voltage supressor
Vrwm=11V, Vbr=12.2..13.5V, 19.9A, 400W(1ms), Bidir.
WY
TV04A110KB-G
Comchip Technology
DO-214AC
Transient voltage supressor
Vrwm=11.0V, Vbr=12.20..14.90V, Ipp=19.90A, 400W(1ms), Bidir.
WY
TZTC43WS
TAITRON Components
SOT-323
Zener diode
40.85..45.15V, Izt=5mA, Zzt=150, 200mW
WY-
2SC5820
Renessas
CMPAK-4
NPN transistor
HF, LN, 12V, 35mA, 100mW, 20GHz, B=70..150
WY-
RT9818A-37PB
Richtek Technology
SOT-23-5
Voltage detector IC
3.7V±1.5%, -Reset ODO
WY1
BZX84-B33

SOT-23
Zener diode
33V±2.5%, Zzt=80, Izt=5mA, 250mW
WY2
BZX84-B36

SOT-23
Zener diode
36V±2.5%, Zzt=90, Izt=5mA, 250mW
WY=
RT9818A-37GB
Richtek Technology
SOT-23-5
Voltage detector IC
3.7V±1.5%, -Reset ODO
WYs
BCR139
Infineon Technologies
SOT-23
NPN transistor
Sw, 50V, 100mA, 200mW, R1=22k, 150MHz
WYs
BCR139F
Infineon Technologies
TSFP-3
NPN transistor
Sw, 50V, 100mA, 250mW, R1=22k, 150MHz
WYs
BCR139T
Infineon Technologies
SOT-416
NPN transistor
Sw, 50V, 100mA, 250mW, R1=22k, 150MHz