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 'U4'

Marking
Name
Manufacturer/Case
Function
U4
2SK613-4
Sony
SOT-23
FET n-type
V-CAM, 15V, 50mA, 150mW, Idss=24.7..42, Up<1.26V
U4
AP8822C-24GA
Anwell Semiconductor
SOT-23
Voltage detector IC
2.4V±2%, -Reset PPO, 200ms, Halogen-fre
U4
AP8822C-24GI
Anwell Semiconductor
SC-82
Voltage detector IC
2.4V±2%, -Reset PPO, 200ms, Halogen-fre
U4
AP8822C-24GS
Anwell Semiconductor
SC-82S
Voltage detector IC
2.4V±2%, -Reset PPO, 200ms, Halogen-fre
U4
AP8822C-24GT
Anwell Semiconductor
SC-70
Voltage detector IC
2.4V±2%, -Reset PPO, 200ms, Halogen-fre
U4
AP8822C-24PA
Anwell Semiconductor
SOT-23
Voltage detector IC
2.4V±2%, -Reset PPO, 200ms
U4
AP8822C-24PI
Anwell Semiconductor
SC-82
Voltage detector IC
2.4V±2%, -Reset PPO, 200ms
U4
AP8822C-24PS
Anwell Semiconductor
SC-82S
Voltage detector IC
2.4V±2%, -Reset PPO, 200ms
U4
AP8822C-24PT
Anwell Semiconductor
SC-70
Voltage detector IC
2.4V±2%, -Reset PPO, 200ms
U4
BCR114L3
Infineon Technologies
TSLP-3
NPN transistor
Sw, 50V, 100mA, 250mW, R1/R2=4.7k/10k, 160MHz
U4
BCX19R
Zetex
SOT-23
NPN transistor
AF-Drv, 50V, 500mA, 250mW, B=100..600, 200MHz
U4
BD45361G
Rohm
SSOP-5
Voltage detector IC
3.6V±1%, -MR, -Reset ODO, 100ms
U4
BZX84J-C2V7
NXP Semiconductors
SOD-323FL
Zener diode
2.7V±5%, If=250mA, 550mW
U4
CZRER3V0B
Comchip Technology
SOD-723F
Zener diode
2.93..3.08V, Zzt=95, Izt=5mA, 150mW
U4
CZRF3V0B
Comchip Technology
1005
Zener diode
2.93..3.08V, Izt=5mA, Zzt=95, 200mW
U4
CZRFR3V0B-HF
Comchip Technology
1005
Zener diode
2.93..3.08V, Zzt=95, Izt=5mA, 200mW
U4
CZRQR3V0B
Comchip Technology
0402
Zener diode
2.93..3.08V, Izt=5mA, Zzt=95, 125mW
U4
CZRU3V0B
Comchip Technology
0603
Zener diode
2.93..3.08V, Izt=5mA, Zzt=95, 150mW
U4
CZRUR3V0B-HF
Comchip Technology
0603
Zener diode
2.93..3.08V, Zzt=95, Izt=5mA, 150mW
U4
ELM7624LCB
ELM Technology
SOT-23
Voltage detector IC
2.4V±2%, -Reset PPO, 150ms
U4
ELM9744CAB
ELM Technology
SOT-89
Voltage detector IC
4.4V±2.5%, +Reset PPO
U4
ELM9744CBB
ELM Technology
SOT-23
Voltage detector IC
4.4V±2.5%, +Reset PPO
U4
FES1F
Fagor Electronica
DO-214AC
Diode
U-fast Recovery, 300V, 1A, Vf<1.25V(1A), <50ns
U4
GDZ6V8B-V-G
Vishay Semiconductor
SOD-323
Zener diode
6.65..6.93V, Izt=5mA, Zzt=40, 200mW
U4
MMSZ5V1T
Motorola
SOD-123
Zener diode
5.1V±5%, Izt=5mA, Zzt=60, 500mW
U4
R1163D341B
Ricoh
SON-6
Linear voltage regulator IC
LDO, 3.4V±1.5%, 150mA, +CE, AE(mode)
U4
R3111Q141C
Ricoh
SC-82AB
Voltage detector IC
1.4V±2%, -Reset ODO
U4
R3116Q411C
Ricoh
SC-82AB
Voltage detector IC
4.1V±0.8%, -Reset PPO
U4
R3117K413C
Ricoh
DFN1010-4
Voltage detector IC
4.1V±1%, -Reset PPO, Sense
U4
R5323N035B
Ricoh
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=1.5V/2.7V±1%, 150mA, +CE, CL
U4
RN2105FS
Toshiba
fSM
PNP transistor
Sw, 20V, 50mA, 50mW, R1/R2=2.2k/47k
U4
SP809EK-4-6
Sipex
SOT-23
Voltage detector IC
4.6V±1.5%, -Reset PPO
U4
TC74A4-5.0VCT
Microchip Technology
SOT-23-5
Thermal detector IC
Sensor (-40..+125±3°C), Vcc=5V, I2C-bus
U4
XC6215B352NR
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 3.5V±2%, 200mA, +CE
U4
XC6223E14BNR-G
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 1.45V±20mV, 300mA, +CE, ICP
U4
XC6225B24ANR-G
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 2.45V±2%, 30mA, +CE, CL
U4-
PZU3.6DB2/DG

SOT-353
Zener diode
Dual, 3.55..3.8V, Izt=5mA, Zzt=90, 250mW, Halogen free
U40
SN74AUC1G240DBV
Texas Instruments
SOT-23-5
Capacitance diode
Bus buffer inverted with 3­state output
U40
SN74AUC2G240DCT
Texas Instruments
SSOP-8
Capacitance diode
Dual bus buffer inverted with 3-state output
U40
XC6383E401M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.0V±2.5%, 400mA, 100kHz, int. Vdd
U40
XC6383E401P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.0V±2.5%, 400mA, 100kHz, int. Vdd
U40
XC9226A406M
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 600kHz, 4.0V±1%, 600mA, +CE
U40
XC9226B406M
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 600kHz, 4.0V±1%, 600mA, -CE
U40
XC9226C406M
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 600kHz, 4.0V±1%, 600mA, +CE, PDR
U40
XC9226D406M
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 600kHz, 4.0V±1%, 600mA, -CE, PUR
U40
XC9226E406M
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 600kHz, 4.0V±1%, 900mA, +CE
U40
XC9226F406M
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 600kHz, 4.0V±1%, 900mA, -CE
U40
XC9226G406M
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 600kHz, 4.0V±1%, 900mA, +CE, PDR
U40
XC9226H406M
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 600kHz, 4.0V±1%, 900mA, -CE, PUR
U40B
RP131H401B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.0V±1%, 1A, +CE
U40C
SS6680C-40CU
Silicon Standard
SOT-23
Voltage detector IC
4.0V±2.5%, +Reset PPO
U40D
RP131H401D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.0V±1%, 1A, +CE, CL
U40N
SS6680N-40CU
Silicon Standard
SOT-23
Voltage detector IC
4.0V±2.5%, +Reset ODO
U40P
SS6680P-40CU
Silicon Standard
SOT-23
Voltage detector IC
4.0V±2.5%, -Reset ODO
U41
SN74AUC2G241DCT
Texas Instruments
SSOP-8
Capacitance diode
Dual bus buffer non-inverted with 3-state output
U41
XC6383E411M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.1V±2.5%, 400mA, 100kHz, int. Vdd
U41
XC6383E411P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.1V±2.5%, 400mA, 100kHz, int. Vdd
U41B
RP131H411B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.1V±1%, 1A, +CE
U41C
SS6680C-41CU
Silicon Standard
SOT-23
Voltage detector IC
4.1V±2.5%, +Reset PPO
U41D
RP131H411D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.1V±1%, 1A, +CE, CL
U41N
SS6680N-41CU
Silicon Standard
SOT-23
Voltage detector IC
4.1V±2.5%, +Reset ODO
U41P
SS6680P-41CU
Silicon Standard
SOT-23
Voltage detector IC
4.1V±2.5%, -Reset ODO
U42
3SK133-42
NEC Electronics
SOT-143
MOSFET n-type
Dual gate, VHF-Tuner, 20V, 25mA, 200mW, Idss=0.01..2mA
U42
XC6383E421M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.2V±2.5%, 400mA, 100kHz, int. Vdd
U42
XC6383E421P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.2V±2.5%, 400mA, 100kHz, int. Vdd
U42B
RP131H421B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.2V±1%, 1A, +CE
U42C
SS6680C-42CU
Silicon Standard
SOT-23
Voltage detector IC
4.2V±2.5%, +Reset PPO
U42D
RP131H421D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.2V±1%, 1A, +CE, CL
U42N
SS6680N-42CU
Silicon Standard
SOT-23
Voltage detector IC
4.2V±2.5%, +Reset ODO
U42P
SS6680P-42CU
Silicon Standard
SOT-23
Voltage detector IC
4.2V±2.5%, -Reset ODO
U43
3SK133-43
NEC Electronics
SOT-143
MOSFET n-type
Dual gate, VHF-Tuner, 20V, 25mA, 200mW, Idss=1..6mA
U43
XC6383E431M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.3V±2.5%, 400mA, 100kHz, int. Vdd
U43
XC6383E431P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.3V±2.5%, 400mA, 100kHz, int. Vdd
U43B
RP131H431B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.3V±1%, 1A, +CE
U43C
SS6680C-43CU
Silicon Standard
SOT-23
Voltage detector IC
4.3V±2.5%, +Reset PPO
U43D
RP131H431D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.3V±1%, 1A, +CE, CL
U43N
SS6680N-43CU
Silicon Standard
SOT-23
Voltage detector IC
4.3V±2.5%, +Reset ODO
U43P
SS6680P-43CU
Silicon Standard
SOT-23
Voltage detector IC
4.3V±2.5%, -Reset ODO
U44
XC6383E441M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.4V±2.5%, 400mA, 100kHz, int. Vdd
U44
XC6383E441P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.4V±2.5%, 400mA, 100kHz, int. Vdd
U44B
RP131H441B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.4V±1%, 1A, +CE
U44C
SS6680C-44CU
Silicon Standard
SOT-23
Voltage detector IC
4.4V±2.5%, +Reset PPO
U44D
RP131H441D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.4V±1%, 1A, +CE, CL
U44N
SS6680N-44CU
Silicon Standard
SOT-23
Voltage detector IC
4.4V±2.5%, +Reset ODO
U44P
SS6680P-44CU
Silicon Standard
SOT-23
Voltage detector IC
4.4V±2.5%, -Reset ODO
U45
XC6383E451M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.5V±2.5%, 400mA, 100kHz, int. Vdd
U45
XC6383E451P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.5V±2.5%, 400mA, 100kHz, int. Vdd
U45B
RP131H451B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.5V±1%, 1A, +CE
U45C
SS6680C-45CU
Silicon Standard
SOT-23
Voltage detector IC
4.5V±2.5%, +Reset PPO
U45D
RP131H451D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.5V±1%, 1A, +CE, CL
U45N
SS6680N-45CU
Silicon Standard
SOT-23
Voltage detector IC
4.5V±2.5%, +Reset ODO
U45P
SS6680P-45CU
Silicon Standard
SOT-23
Voltage detector IC
4.5V±2.5%, -Reset ODO
U46
XC6383E461M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.6V±2.5%, 400mA, 100kHz, int. Vdd
U46
XC6383E461P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.6V±2.5%, 400mA, 100kHz, int. Vdd
U46B
RP131H461B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.6V±1%, 1A, +CE
U46C
SS6680C-46CU
Silicon Standard
SOT-23
Voltage detector IC
4.6V±2.5%, +Reset PPO
U46D
RP131H461D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.6V±1%, 1A, +CE, CL
U46N
SS6680N-46CU
Silicon Standard
SOT-23
Voltage detector IC
4.6V±2.5%, +Reset ODO
U46P
SS6680P-46CU
Silicon Standard
SOT-23
Voltage detector IC
4.6V±2.5%, -Reset ODO
U47
XC6383E471M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.7V±2.5%, 400mA, 100kHz, int. Vdd
U47
XC6383E471P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.7V±2.5%, 400mA, 100kHz, int. Vdd
U47B
RP131H471B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.7V±1%, 1A, +CE
U47C
SS6680C-47CU
Silicon Standard
SOT-23
Voltage detector IC
4.7V±2.5%, +Reset PPO
U47D
RP131H471D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.7V±1%, 1A, +CE, CL
U47N
SS6680N-47CU
Silicon Standard
SOT-23
Voltage detector IC
4.7V±2.5%, +Reset ODO
U47P
SS6680P-47CU
Silicon Standard
SOT-23
Voltage detector IC
4.7V±2.5%, -Reset ODO
U48
XC6383E481M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.8V±2.5%, 400mA, 100kHz, int. Vdd
U48
XC6383E481P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.8V±2.5%, 400mA, 100kHz, int. Vdd
U48B
RP131H481B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.8V±1%, 1A, +CE
U48C
SS6680C-48CU
Silicon Standard
SOT-23
Voltage detector IC
4.8V±2.5%, +Reset PPO
U48D
RP131H481D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.8V±1%, 1A, +CE, CL
U48N
SS6680N-48CU
Silicon Standard
SOT-23
Voltage detector IC
4.8V±2.5%, +Reset ODO
U48P
SS6680P-48CU
Silicon Standard
SOT-23
Voltage detector IC
4.8V±2.5%, -Reset ODO
U49
XC6383E491M
Torex Semiconductor
SOT-23-5
DC/DC voltage converter IC
PFM step-up, 4.9V±2.5%, 400mA, 100kHz, int. Vdd
U49
XC6383E491P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PFM step-up, 4.9V±2.5%, 400mA, 100kHz, int. Vdd
U49B
RP131H491B
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.9V±1%, 1A, +CE
U49C
SS6680C-49CU
Silicon Standard
SOT-23
Voltage detector IC
4.9V±2.5%, +Reset PPO
U49D
RP131H491D
Ricoh
SOT-89-5
Linear voltage regulator IC
LDO, 4.9V±1%, 1A, +CE, CL
U49N
SS6680N-49CU
Silicon Standard
SOT-23
Voltage detector IC
4.9V±2.5%, +Reset ODO
U49P
SS6680P-49CU
Silicon Standard
SOT-23
Voltage detector IC
4.9V±2.5%, -Reset ODO
U4A
MURA105
ON Semiconductor
DO-214AC
Diode
Schottky, U-fast Rectifier, 50V, 1A, Vf<0.66V(1A), <30ns
U4A
XC6118N14AGR-G
Torex Semiconductor
USP-4
Voltage detector IC
1.4V±30mV, ±Reset ODO, Sense, hysteresis 5%, Cd
U4A
XC6118N14AMR-G
Torex Semiconductor
SOT-25
Voltage detector IC
1.4V±30mV, ±Reset ODO, Sense, hysteresis 5%, Cd
U4A
XC9226A40CM
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 1.2MHz, 4.0V±1%, 600mA, +CE
U4A
XC9226B40CM
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 1.2MHz, 4.0V±1%, 600mA, -CE
U4A
XC9226C40CM
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 1.2MHz, 4.0V±1%, 600mA, +CE, PDR
U4A
XC9226D40CM
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 1.2MHz, 4.0V±1%, 600mA, -CE, PUR
U4A
XC9226E40CM
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 1.2MHz, 4.0V±1%, 900mA, +CE
U4A
XC9226F40CM
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 1.2MHz, 4.0V±1%, 900mA, -CE
U4A
XC9226G40CM
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 1.2MHz, 4.0V±1%, 900mA, +CE, PDR
U4A
XC9226H40CM
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM/PFM step-down, 1.2MHz, 4.0V±1%, 900mA, -CE, PUR
U4B
MURA110
ON Semiconductor
DO-214AC
Diode
Schottky, U-fast Rectifier, 100V, 1A, Vf<0.66V(1A), <30ns
U4B
XC6118N14BGR-G
Torex Semiconductor
USP-4
Voltage detector IC
1.4V±30mV, ±Reset ODO, Sense, hysteresis <1%, Cd
U4B
XC6118N14BMR-G
Torex Semiconductor
SOT-25
Voltage detector IC
1.4V±30mV, ±Reset ODO, Sense, hysteresis <1%, Cd
U4C
MURA115
ON Semiconductor
DO-214AC
Diode
Schottky, U-fast Rectifier, 150V, 1A, Vf<0.71V(1A), <35ns
U4C
XC6118N14CGR-G
Torex Semiconductor
USP-4
Voltage detector IC
1.4V±30mV, ±Reset ODO, Sense, hysteresis 5%
U4C
XC6118N14CMR-G
Torex Semiconductor
SOT-25
Voltage detector IC
1.4V±30mV, ±Reset ODO, Sense, hysteresis 5%
U4D
MURA120
ON Semiconductor
DO-214AC
Diode
Schottky, U-fast Rectifier, 200V, 1A, Vf<0.71V(1A), <35ns
U4D
XC6118N14DGR-G
Torex Semiconductor
USP-4
Voltage detector IC
1.4V±30mV, ±Reset ODO, Sense, hysteresis <1%
U4D
XC6118N14DMR-G
Torex Semiconductor
SOT-25
Voltage detector IC
1.4V±30mV, ±Reset ODO, Sense, hysteresis <1%
U4F
MURA130
ON Semiconductor
DO-214AC
Diode
Schottky, U-fast Rectifier, 300V, 1A, Vf<0.8V(1A), <65ns
U4G
MURA140
ON Semiconductor
DO-214AC
Diode
Schottky, U-fast Rectifier, 400V, 1A, Vf<0.8V(1A), <65ns
U4J
MURA160
ON Semiconductor
DO-214AC
Diode
Schottky, U-fast Rectifier, 600V, 1A, Vf<1.05V(1A), <75ns
U4p
PZU3.6DB2/DG

SOT-353
Zener diode
Dual, 3.55..3.8V, Izt=5mA, Zzt=90, 250mW, Halogen free
U4s
BCR114F
Infineon Technologies
TSFP-3
NPN transistor
Sw, 50V, 100mA, 250mW, R1/R2=4.7k/10k, 160MHz
U4s
BCR114T
Infineon Technologies
SOT-416
NPN transistor
Sw, 50V, 100mA, 250mW, R1/R2=4.7k/10k, 160MHz
U4t
PZU3.6DB2/DG
NXP Malaysia
SOT-353
Zener diode
Dual, 3.55..3.8V, Izt=5mA, Zzt=90, 250mW, Halogen free
U4W
PZU3.6DB2/DG

SOT-353
Zener diode
Dual, 3.55..3.8V, Izt=5mA, Zzt=90, 250mW, Halogen free