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 'Y4'

Marking
Name
Manufacturer/Case
Function
Y4
APX809-40SR
Diodes
SOT-23
Voltage detector IC
4.0V±1.5%, -Reset PPO
y4
BD46E372G-M
Rohm
SSOP-5
Voltage detector IC
3.7V±1%, -MR, -Reset PPO, Td=200ms
Y4
BZF10C10
Diodesemi Technology
SOD-123F
Zener diode
9.5..10.5V, Izt=25mA, Zzt=7, 1W
Y4
BZT52C15T
Micro Commercial Components
SOD-523
Zener diode
15V±5%, Izt=5mA, Zzt=30, 100mW
Y4
BZT52C3V3-V-G
Vishay Semiconductor
SOD-123
Zener diode
3.3V±5%, Izt=5mA, Zzt=95, 500mW
Y4
BZV49-C15
Zetex
SOT-89
Zener diode
15V±5%, Izt=5mA, 1W
Y4
BZX384C3V3-V-G
Vishay Semiconductor
SOD-323
Zener diode
3.3V±5%, Izt=5mA, Zzt=85, 200mW
Y4
BZX84-C15
Transys Electronics
SOT-23
Zener diode
13.8..15.6V, Zzt=30, Izt=5mA, 300mW
Y4
BZX84B15
Micro Commercial Components
SOT-23
Zener diode
14.70..15.30V, Zzt=30, Izt=5mA, 350mW
Y4
BZX84C15
Central Semiconductor
SOT-23
Zener diode
13.8..15.6V, Zzt=30, Izt=5mA, 350mW
Y4
BZX84C15LT1
ON Semiconductor
SOT-23
Zener diode
13.8..15.6V, Zzt=30, Izt=5mA, 225mW
Y4
BZX84C15LT1G
ON Semiconductor
SOT-23
Zener diode
13.8..15.6V, Zzt=30, Izt=5mA, 225mW, Pb-free
Y4
BZX88-C15
Ferranti Semiconductors
SOT-23
Zener diode
15V±5%, Iz=5mA, 200mW
Y4
CMDZ5256B
Central Semiconductor
SOD-323
Zener diode
30V±5%, 4.2mA, Zzt=49, 250mW
Y4
CZRT55C15
Comchip Technology
SOT-23
Zener diode
13.8..15.6V, Zzt=30, Izt=5mA, 350mW
Y4
ELM7644LBB
ELM Technology
SOT-23
Voltage detector IC
4.4V±2%, -Reset PPO, 500ms
Y4
ELM9724CAB
ELM Technology
SOT-89
Voltage detector IC
2.4V±2.5%, +Reset PPO
Y4
ELM9724CBB
ELM Technology
SOT-23
Voltage detector IC
2.4V±2.5%, +Reset PPO
Y4
KA4A4Z
NEC Electronics
SOT-416
NPN transistor
Sw, 60V, 100mA, 200mW, R1=10k
Y4
KRC837E
Korea Electronics
TES6
NPN transistor
Dual, Sw, 50V, 100mA, 200mW, R1/R2=2.2k/2.2k
Y4
KRC837U
Korea Electronics
US6
NPN transistor
Dual, Sw, 50V, 100mA, 200mW, R1/R2=2.2k/2.2k
Y4
LBZX84C15L1
Leshan Radio Company
SOT-23
Zener diode
13.8..15.6V, Izt=5mA, 225mW
Y4
MFPZ4740A
TAITRON Components
SOD-123F
Zener diode
9.5..10.5V, Izt=25.0mA, 1W
Y4
MM1Z5239B
EIC Semiconductor
SOD-323FL
Zener diode
8.65..9.56V, Izt=20mA, Zzt=10, 500mW
Y4
MM1Z5239BH
Zowie Technology
SOD-123
Zener diode
8.65..9.56V, Izt=20mA, Zzt=10, 500mW
Y4
MM5Z15V
Secos
SOD-523
Zener diode
15V±5%, Izt=5mA, Zzt=30, 200mW
Y4
MMSZ36T
Motorola
SOD-123
Zener diode
36V±5%, Izt=5mA, Zzt=90, 500mW
Y4
MMSZ5239B
EIC Semiconductor
SOD-123
Zener diode
9.1V±5%, Izt=20mA, Zzt=10, 500mW
Y4
NTE5024SM
NTE Electronics
SOT-23
Zener diode
15V±5%, If=250mA, 300mW
Y4
PZU18BA/DG
Philips
SOD-323
Zener diode
18V±5%, If=200mA, 320mW, halogen-free
Y4
R1163D341D
Ricoh
SON-6
Linear voltage regulator IC
LDO, 3.4V±1.5%, 150mA, +CE, CL, AE(mode)
Y4
R1210N542C
Ricoh
SOT-23-5
DC/DC voltage converter IC
PWM step-up, 5.4V, 100kHz, +CE, ext. transistor
Y4
R3111Q541C
Ricoh
SC-82AB
Voltage detector IC
5.4V±2%, -Reset ODO
Y4
R5325N004A
Ricoh
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.5V/3V±1%, 150mA, +CE
Y4
RN2132F
Toshiba
SOT-490
PNP transistor
Sw, 50V, 100mA, 100mW, R1=200k
Y4
SP809NEK-3-1
Sipex
SOT-23
Voltage detector IC
3.1V±1.5%, -Reset ODO
Y4
VGFM02-C10-M
Formosa Microsemi
SOD-123F
Transient voltage supressor
Vrwm=8.55V, Vbr=9.50..10.5V, 13.8A, 200W(1ms)
Y4
XC6223H14BNR-G
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 1.45V±20mV, 300mA, +CE, CL, PDR, ICP
Y4
XC6225A34ANR-G
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 3.45V±2%, 30mA, +CE
Y4
ZD5240BSG
Cystech Electronics
SOD-323-S
Zener diode
10V±5%, 5mA, Zzt=15, 500mW
Y4
ZGFM1010-MH
Formosa Microsemi
SOD-123H
Zener diode
10V±10%, Zzt=7(Izt=25mA), 1W
Y4
ZGFM1010-N
Formosa Microsemi
SOD-123F
Zener diode
9.5..10.5V, Izt=25mA, Zzt=7, 1W
Y4-
RT9198-33PBG
Richtek Technology
SOT-23-5
Linear voltage regulator IC
LDO, 3.3V±1%, 300mA, +CE
Y40
R1172N181B5
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.85V±2%, 1A, +CE
Y40
XC6381E401M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.0V±2.5%, 400mA, 155kHz, int. Vdd
Y40
XC6381E401P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.0V±2.5%, 400mA, 155kHz, int. Vdd
Y40
XC9110E401MR
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PFM step-up, 100kHz, 4.0V±2.5%, 400mA
Y402A
FC6206S402P
First Silion
SOT-89
Linear voltage regulator IC
4.0V±2%, 250mA
Y402A
ML6206S402P
MiniLogic Device
SOT-89
Linear voltage regulator IC
4.0V±2%, 250mA
Y40A
FC6206S402M
First Silion
SOT-23
Linear voltage regulator IC
4.0V±2%, 250mA
Y40A
ML6206S402M
MiniLogic Device
SOT-23
Linear voltage regulator IC
4.0V±2%, 250mA
Y40B
RP170H401B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.0V±1%, 300mA, +CE
Y40D
RP170H401D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.0V±1%, 300mA, +CE, CL
Y41
R1172N281B5
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 2.85V±2%, 1A, +CE
Y41
XC6381E411M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.1V±2.5%, 400mA, 155kHz, int. Vdd
Y41
XC6381E411P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.1V±2.5%, 400mA, 155kHz, int. Vdd
Y41
XC9110E411MR
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PFM step-up, 100kHz, 4.1V±2.5%, 400mA
Y412A
FC6206S412P
First Silion
SOT-89
Linear voltage regulator IC
4.1V±2%, 250mA
Y412A
ML6206S412P
MiniLogic Device
SOT-89
Linear voltage regulator IC
4.1V±2%, 250mA
Y41A
FC6206S412M
First Silion
SOT-23
Linear voltage regulator IC
4.1V±2%, 250mA
Y41A
ML6206S412M
MiniLogic Device
SOT-23
Linear voltage regulator IC
4.1V±2%, 250mA
Y41B
RP170H411B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.1V±1%, 300mA, +CE
Y41D
RP170H411D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.1V±1%, 300mA, +CE, CL
Y42
XC6381E421M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.2V±2.5%, 400mA, 155kHz, int. Vdd
Y42
XC6381E421P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.2V±2.5%, 400mA, 155kHz, int. Vdd
Y42
XC9110E421MR
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PFM step-up, 100kHz, 4.2V±2.5%, 400mA
Y422A
FC6206S422P
First Silion
SOT-89
Linear voltage regulator IC
4.2V±2%, 250mA
Y422A
ML6206S422P
MiniLogic Device
SOT-89
Linear voltage regulator IC
4.2V±2%, 250mA
Y42A
FC6206S422M
First Silion
SOT-23
Linear voltage regulator IC
4.2V±2%, 250mA
Y42A
ML6206S422M
MiniLogic Device
SOT-23
Linear voltage regulator IC
4.2V±2%, 250mA
Y42B
RP170H421B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.2V±1%, 300mA, +CE
Y42D
RP170H421D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.2V±1%, 300mA, +CE, CL
Y43
XC6381E431M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.3V±2.5%, 400mA, 155kHz, int. Vdd
Y43
XC6381E431P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.3V±2.5%, 400mA, 155kHz, int. Vdd
Y43
XC9110E431MR
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PFM step-up, 100kHz, 4.3V±2.5%, 400mA
Y432A
FC6206S432P
First Silion
SOT-89
Linear voltage regulator IC
4.3V±2%, 250mA
Y432A
ML6206S432P
MiniLogic Device
SOT-89
Linear voltage regulator IC
4.3V±2%, 250mA
Y43A
FC6206S432M
First Silion
SOT-23
Linear voltage regulator IC
4.3V±2%, 250mA
Y43A
ML6206S432M
MiniLogic Device
SOT-23
Linear voltage regulator IC
4.3V±2%, 250mA
Y43B
RP170H431B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.3V±1%, 300mA, +CE
Y43D
RP170H431D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.3V±1%, 300mA, +CE, CL
Y44
XC6381E441M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.4V±2.5%, 400mA, 155kHz, int. Vdd
Y44
XC6381E441P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.4V±2.5%, 400mA, 155kHz, int. Vdd
Y44
XC9110E441MR
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PFM step-up, 100kHz, 4.4V±2.5%, 400mA
Y442A
FC6206S442P
First Silion
SOT-89
Linear voltage regulator IC
4.4V±2%, 250mA
Y442A
ML6206S442P
MiniLogic Device
SOT-89
Linear voltage regulator IC
4.4V±2%, 250mA
Y44A
FC6206S442M
First Silion
SOT-23
Linear voltage regulator IC
4.4V±2%, 250mA
Y44A
ML6206S442M
MiniLogic Device
SOT-23
Linear voltage regulator IC
4.4V±2%, 250mA
Y44B
RP170H441B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.4V±1%, 300mA, +CE
Y44D
RP170H441D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.4V±1%, 300mA, +CE, CL
Y45
BZX84-A27
NXP Semiconductors
SOT-23
Zener diode
27V±1%, Zzt=80, Izt=5mA, 250mW
Y45
XC6381E451M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.5V±2.5%, 400mA, 155kHz, int. Vdd
Y45
XC6381E451P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.5V±2.5%, 400mA, 155kHz, int. Vdd
Y45
XC9110E451MR
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PFM step-up, 100kHz, 4.5V±2.5%, 400mA
Y452A
FC6206S452P
First Silion
SOT-89
Linear voltage regulator IC
4.5V±2%, 250mA
Y452A
ML6206S452P
MiniLogic Device
SOT-89
Linear voltage regulator IC
4.5V±2%, 250mA
Y45A
FC6206S452M
First Silion
SOT-23
Linear voltage regulator IC
4.5V±2%, 250mA
Y45A
ML6206S452M
MiniLogic Device
SOT-23
Linear voltage regulator IC
4.5V±2%, 250mA
Y45B
RP170H451B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.5V±1%, 300mA, +CE
Y45D
RP170H451D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.5V±1%, 300mA, +CE, CL
Y46
BZX84-A30
NXP Semiconductors
SOT-23
Zener diode
30V±1%, Zzt=80, Izt=5mA, 250mW
Y46
XC6381E461M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.6V±2.5%, 400mA, 155kHz, int. Vdd
Y46
XC6381E461P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.6V±2.5%, 400mA, 155kHz, int. Vdd
Y46
XC9110E461MR
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PFM step-up, 100kHz, 4.6V±2.5%, 400mA
Y462A
FC6206S462P
First Silion
SOT-89
Linear voltage regulator IC
4.6V±2%, 250mA
Y462A
ML6206S462P
MiniLogic Device
SOT-89
Linear voltage regulator IC
4.6V±2%, 250mA
Y46A
FC6206S462M
First Silion
SOT-23
Linear voltage regulator IC
4.6V±2%, 250mA
Y46A
ML6206S462M
MiniLogic Device
SOT-23
Linear voltage regulator IC
4.6V±2%, 250mA
Y46B
RP170H461B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.6V±1%, 300mA, +CE
Y46D
RP170H461D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.6V±1%, 300mA, +CE, CL
Y47
XC6381E471M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.7V±2.5%, 400mA, 155kHz, int. Vdd
Y47
XC6381E471P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.7V±2.5%, 400mA, 155kHz, int. Vdd
Y47
XC9110E471MR
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PFM step-up, 100kHz, 4.7V±2.5%, 400mA
Y472A
FC6206S472P
First Silion
SOT-89
Linear voltage regulator IC
4.7V±2%, 250mA
Y472A
ML6206S472P
MiniLogic Device
SOT-89
Linear voltage regulator IC
4.7V±2%, 250mA
Y47A
FC6206S472M
First Silion
SOT-23
Linear voltage regulator IC
4.7V±2%, 250mA
Y47A
ML6206S472M
MiniLogic Device
SOT-23
Linear voltage regulator IC
4.7V±2%, 250mA
Y47B
RP170H471B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.7V±1%, 300mA, +CE
Y47D
RP170H471D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.7V±1%, 300mA, +CE, CL
Y48
R1172N081B
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 0.8V±2%, 1A, +CE
Y48
XC6381E481M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.8V±2.5%, 400mA, 155kHz, int. Vdd
Y48
XC6381E481P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.8V±2.5%, 400mA, 155kHz, int. Vdd
Y48
XC9110E481MR
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PFM step-up, 100kHz, 4.8V±2.5%, 400mA
Y482A
FC6206S482P
First Silion
SOT-89
Linear voltage regulator IC
4.8V±2%, 250mA
Y482A
ML6206S482P
MiniLogic Device
SOT-89
Linear voltage regulator IC
4.8V±2%, 250mA
Y48A
FC6206S482M
First Silion
SOT-23
Linear voltage regulator IC
4.8V±2%, 250mA
Y48A
ML6206S482M
MiniLogic Device
SOT-23
Linear voltage regulator IC
4.8V±2%, 250mA
Y48B
RP170H481B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.8V±1%, 300mA, +CE
Y48D
RP170H481D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.8V±1%, 300mA, +CE, CL
Y49
R1172N091B
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 0.9V±2%, 1A, +CE
Y49
XC6381E491M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.9V±2.5%, 400mA, 155kHz, int. Vdd
Y49
XC6381E491P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.9V±2.5%, 400mA, 155kHz, int. Vdd
Y49
XC9110E491MR
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PFM step-up, 100kHz, 4.9V±2.5%, 400mA
Y492A
FC6206S492P
First Silion
SOT-89
Linear voltage regulator IC
4.9V±2%, 250mA
Y492A
ML6206S492P
MiniLogic Device
SOT-89
Linear voltage regulator IC
4.9V±2%, 250mA
Y49A
FC6206S492M
First Silion
SOT-23
Linear voltage regulator IC
4.9V±2%, 250mA
Y49A
ML6206S492M
MiniLogic Device
SOT-23
Linear voltage regulator IC
4.9V±2%, 250mA
Y49B
RP170H491B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.9V±1%, 300mA, +CE
Y49D
RP170H491D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.9V±1%, 300mA, +CE, CL
Y4=
RT9198-33GBG
Richtek Technology
SOT-23-5
Linear voltage regulator IC
LDO, 3.3V±1%, 300mA, +CE
Y4A
XC6118N44AGR-G
Torex Semiconductor
USP-4
Voltage detector IC
4.4V±2%, ±Reset ODO, Sense, hysteresis 5%, Cd
Y4A
XC6118N44AMR-G
Torex Semiconductor
SOT-25
Voltage detector IC
4.4V±2%, ±Reset ODO, Sense, hysteresis 5%, Cd
Y4B
XC6118N44BGR-G
Torex Semiconductor
USP-4
Voltage detector IC
4.4V±2%, ±Reset ODO, Sense, hysteresis <1%, Cd
Y4B
XC6118N44BMR-G
Torex Semiconductor
SOT-25
Voltage detector IC
4.4V±2%, ±Reset ODO, Sense, hysteresis <1%, Cd
Y4C
XC6118N44CGR-G
Torex Semiconductor
USP-4
Voltage detector IC
4.4V±2%, ±Reset ODO, Sense, hysteresis 5%
Y4C
XC6118N44CMR-G
Torex Semiconductor
SOT-25
Voltage detector IC
4.4V±2%, ±Reset ODO, Sense, hysteresis 5%
Y4D
XC6118N44DGR-G
Torex Semiconductor
USP-4
Voltage detector IC
4.4V±2%, ±Reset ODO, Sense, hysteresis <1%
Y4D
XC6118N44DMR-G
Torex Semiconductor
SOT-25
Voltage detector IC
4.4V±2%, ±Reset ODO, Sense, hysteresis <1%
Y4p
BZX84-C15

SOT-23
Zener diode
15V±5%, Zzt=30, Izt=5mA, 250mW
Y4t
BZX84-C15
NXP Malaysia
SOT-23
Zener diode
15V±5%, Zzt=30, Izt=5mA, 250mW
Y4W
BZX84-C15

SOT-23
Zener diode
15V±5%, Zzt=30, Izt=5mA, 250mW
Y4Y
CMSZDA15V
Central Semiconductor
SOT-323
Zener diode
Dual, 13.8..15.6V, Zzt=30, 11mA, 275mW