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 'UN'
Marking
Name
Manufacturer/Case
Function
UN
3SK240
Toshiba
SOT-143
SOT-143
FET n-type
GaAs, Dual gate, UHF, 9V, Idss=6..20mA
GaAs, Dual gate, UHF, 9V, Idss=6..20mA
UN
3SK274
Toshiba
SOT-143
SOT-143
FET n-type
GaAs, Dual gate, UHF, RF-Amp, 9V, Idss=6..20mA, 100mW , 19ms
GaAs, Dual gate, UHF, RF-Amp, 9V, Idss=6..20mA, 100mW , 19ms
UN
74LVC1G07FW4
Diodes
X2-DFN1010-6
X2-DFN1010-6
CMOS logic IC
Noninverting buffer/driver (ODO)
Noninverting buffer/driver (ODO)
UN
74LVC1G07FZ4
Diodes
X2-DFN1410-6
X2-DFN1410-6
CMOS logic IC
Noninverting buffer/driver (ODO)
Noninverting buffer/driver (ODO)
UN
74LVC1G07SE
Diodes
SOT-353
SOT-353
CMOS logic IC
Noninverting buffer/driver (ODO)
Noninverting buffer/driver (ODO)
UN
74LVC1G07W5
Diodes
SOT-25
SOT-25
CMOS logic IC
Noninverting buffer/driver (ODO)
Noninverting buffer/driver (ODO)
UN
74LVC1G07Z
Diodes
SOT-553
SOT-553
CMOS logic IC
Noninverting buffer/driver (ODO)
Noninverting buffer/driver (ODO)
UN
BD45442G
Rohm
SSOP-5
SSOP-5
Voltage detector IC
4.4V±1%, -MR, -Reset ODO, 200ms
4.4V±1%, -MR, -Reset ODO, 200ms
Un
BD45E295G-M
Rohm
SSOP-5
SSOP-5
Voltage detector IC
2.9V±1%, -MR, -Reset ODO, Rdt=50ms
2.9V±1%, -MR, -Reset ODO, Rdt=50ms
UN
BZX84J-C62
NXP Semiconductors
SOD-323FL
SOD-323FL
Zener diode
62V±5%, If=250mA, 550mW
62V±5%, If=250mA, 550mW
UN
CZRER13VB-H
Comchip Technology
SOD-723F
SOD-723F
Zener diode
12.68 13.32V, Zzt=25, Izt=5mA, 150mW
12.68 13.32V, Zzt=25, Izt=5mA, 150mW
UN
CZRF13VB
Comchip Technology
1005
1005
Zener diode
12.68..13.32V, Izt=5mA, Zzt=25, 200mW
12.68..13.32V, Izt=5mA, Zzt=25, 200mW
UN
CZRFR13VB-HF
Comchip Technology
1005
1005
Zener diode
12.68..13.32V, Zzt=25, Izt=5mA, 200mW
12.68..13.32V, Zzt=25, Izt=5mA, 200mW
UN
CZRQR13VB
Comchip Technology
0402
0402
Zener diode
12.68..13.32V, Izt=5mA, Zzt=25, 125mW
12.68..13.32V, Izt=5mA, Zzt=25, 125mW
UN
CZRU13VB
Comchip Technology
0603
0603
Zener diode
12.68..13.32V, Izt=5mA, Zzt=25, 150mW
12.68..13.32V, Izt=5mA, Zzt=25, 150mW
UN
CZRUR13VB-HF
Comchip Technology
0603
0603
Zener diode
12.68..13.32V, Zzt=25, Izt=5mA, 150mW
12.68..13.32V, Zzt=25, Izt=5mA, 150mW
UN
FUF2A
Fagor Electronica
DO-214AA
DO-214AA
Diode
U-fast recov. rectif, 50V, 2A, Vf<1.3V(2A), 50ns
U-fast recov. rectif, 50V, 2A, Vf<1.3V(2A), 50ns
UN
GDZ30B-V-G
Vishay Semiconductor
SOD-323
SOD-323
Zener diode
29.19..30.69V, Izt=5mA, Zzt=200, 200mW
29.19..30.69V, Izt=5mA, Zzt=200, 200mW
UN
IXD5127C36JNR
IXYS
SSOT-24
SSOT-24
Voltage detector IC
3.6V±0.8%, +Reset PPO, -MR, 400ms Rt delay
3.6V±0.8%, +Reset PPO, -MR, 400ms Rt delay
UN
NL17SV16XV5
ON Semiconductor
SOT-553
SOT-553
CMOS logic IC
Noninverting buffer
Noninverting buffer
UN
P4SMAJ16C
Shanghai Lunsure Electronic Technology
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=16V, Vbr=17.8..21.8V, Ipp=13.8A, 400W(1ms), Bidir.
Vrwm=16V, Vbr=17.8..21.8V, Ipp=13.8A, 400W(1ms), Bidir.
UN
P4SMAJ16C
PanJIT Semiconductor
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=16V, Vbr=17.8..22.6V, Ipp=13.8A, 400W(1ms), Bidir.
Vrwm=16V, Vbr=17.8..22.6V, Ipp=13.8A, 400W(1ms), Bidir.
UN
P4SMAJ16C
Won-Top Electronics
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=16V, Vbr=17.8..22.6V, Ipp=13.8A, 400W(1ms), Bidir.
Vrwm=16V, Vbr=17.8..22.6V, Ipp=13.8A, 400W(1ms), Bidir.
UN
PT7M6314US35D4
Pericom Technology
SOT-143
SOT-143
Voltage detector IC
3.5V±1.5%, 1570ms, -Reset PPO, -MR
3.5V±1.5%, 1570ms, -Reset PPO, -MR
UN
R5323N011A
Ricoh
SOT-23-6
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=3.3V/3.0V±1%, 150mA, +CE
LDO, Dual out, Vout1/Vout2=3.3V/3.0V±1%, 150mA, +CE
UN
RP130K461B
Ricoh
DFN1010-4
DFN1010-4
Linear voltage regulator IC
LDO, LN, +CE, 4.6V±1%, 150mA
LDO, LN, +CE, 4.6V±1%, 150mA
UN
RP152L013C
Ricoh
DFN1212-6
DFN1212-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=3.3V/2.8V±1%, 150mA, +CE, CL
LDO, Dual out, Vout1/Vout2=3.3V/2.8V±1%, 150mA, +CE, CL
UN
SM4T27C
SGS-Thomson Microelectronics
SOD-6
SOD-6
Transient voltage supressor
Vrwm=27V, 10.7A, 400W(1ms), Bidir.
Vrwm=27V, 10.7A, 400W(1ms), Bidir.
UN
SMAJ16CG
First Semiconductor
DO-214AC
DO-214AC
Transient voltage supressor
Vrwm=16V, Vbr=17.8..22.6V, Ipp=13.9A, 400W(1ms), Bidir.
Vrwm=16V, Vbr=17.8..22.6V, Ipp=13.9A, 400W(1ms), Bidir.
UN
SMBJ40CA
Fagor Electronica
DO-214AA
DO-214AA
Transient voltage supressor
Vrm=40V, Vbr=44.4..49.1V, Ipp=9.3A, 600W, Bidir.
Vrm=40V, Vbr=44.4..49.1V, Ipp=9.3A, 600W, Bidir.
UN
SMD15KPA45A
MDE Semiconductor
MDE-1-2
MDE-1-2
Transient voltage supressor
Vrwm=45.0V, Vbr=50.30V, Vcl=73.2V, Ipp=206.3A, 15000W(1ms)
Vrwm=45.0V, Vbr=50.30V, Vcl=73.2V, Ipp=206.3A, 15000W(1ms)
UN
SMD30KPA43A
MDE Semiconductor
MDE-1-1
MDE-1-1
Transient voltage supressor
Vrwm=43.0V, Vbr=48.0V, Vcl=73.0V, Ipp=416.1A, 30000W(1ms)
Vrwm=43.0V, Vbr=48.0V, Vcl=73.0V, Ipp=416.1A, 30000W(1ms)
UN
SN74AUC1G126YZP
Texas Instruments
BGA-5
BGA-5
CMOS logic IC
Bus buffer gate with 3-state output
Bus buffer gate with 3-state output
UN
XC6127C36JNR
Torex Semiconductor
SSOT-24
SSOT-24
Voltage detector IC
3.6V±0.8%, +Reset PPO, -MR, Rdt=400ms
3.6V±0.8%, +Reset PPO, -MR, Rdt=400ms
UN
XC6223E30BNR-G
Torex Semiconductor
SSOT-24
SSOT-24
Linear voltage regulator IC
LDO, 3.05V±1%, 300mA, +CE, ICP
LDO, 3.05V±1%, 300mA, +CE, ICP
UN
XC6237B3719R-G
Torex Semiconductor
USPQ-4B05
USPQ-4B05
Linear voltage regulator IC
LDO, 3.7V±1%, 150mA, +CE
LDO, 3.7V±1%, 150mA, +CE
UN
XC6237B371NR-G
Torex Semiconductor
SSOT-24
SSOT-24
Linear voltage regulator IC
LDO, 3.7V±1%, 150mA, +CE
LDO, 3.7V±1%, 150mA, +CE
UN
XC6604B151MR-G
Torex Semiconductor
SOT-26W
SOT-26W
Linear voltage regulator IC
LDO, 1.5V±20mV, 1A, +CE
LDO, 1.5V±20mV, 1A, +CE
UN-
BZB84-C7V5
NXP Semiconductors
SOT-23
SOT-23
Zener diode
Dual, 7.5V±5%, If=200mA, 300mW
Dual, 7.5V±5%, If=200mA, 300mW
UN-
PZU16DB2/DG
NXP Semiconductors
SOT-353
SOT-353
Zener diode
Dual, 15.85..16.51V, Izt=5mA, Zzt=20, 250mW, H-free
Dual, 15.85..16.51V, Izt=5mA, Zzt=20, 250mW, H-free
UN17
MIC2777-17BM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 1.69V±5%, ±Reset PPO
Vcc&Vin detect, 1.69V±5%, ±Reset PPO
UN17
MIC2777-17YM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 1.69V±5%, ±Reset PPO, Pb-free
Vcc&Vin detect, 1.69V±5%, ±Reset PPO, Pb-free
UN2
UM3730P-32
Union Semiconductor
SOT-353
SOT-353
Linear voltage regulator IC
LDO, 3.2V±2%, 150mA, +CE
LDO, 3.2V±2%, 150mA, +CE
UN22
MIC2777-22BM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.25V±5%, ±Reset PPO
Vcc&Vin detect, 2.25V±5%, ±Reset PPO
UN22
MIC2777-22YM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.25V±5%, ±Reset PPO, Pb-free
Vcc&Vin detect, 2.25V±5%, ±Reset PPO, Pb-free
UN23
MIC2777-23BM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.34V±5%, ±Reset PPO
Vcc&Vin detect, 2.34V±5%, ±Reset PPO
UN23
MIC2777-23YM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.34V±5%, ±Reset PPO, Pb-free
Vcc&Vin detect, 2.34V±5%, ±Reset PPO, Pb-free
UN25
MIC2777-25BM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.53V±5%, ±Reset PPO
Vcc&Vin detect, 2.53V±5%, ±Reset PPO
UN25
MIC2777-25YM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.53V±5%, ±Reset PPO, Pb-free
Vcc&Vin detect, 2.53V±5%, ±Reset PPO, Pb-free
UN26
MIC2777-26BM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.67V±5%, ±Reset PPO
Vcc&Vin detect, 2.67V±5%, ±Reset PPO
UN26
MIC2777-26YM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.67V±5%, ±Reset PPO, Pb-free
Vcc&Vin detect, 2.67V±5%, ±Reset PPO, Pb-free
UN28
MIC2777-28BM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.81V±5%, ±Reset PPO
Vcc&Vin detect, 2.81V±5%, ±Reset PPO
UN28
MIC2777-28YM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.81V±5%, ±Reset PPO, Pb-free
Vcc&Vin detect, 2.81V±5%, ±Reset PPO, Pb-free
UN29
MIC2777-29BM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.93V±5%, ±Reset PPO
Vcc&Vin detect, 2.93V±5%, ±Reset PPO
UN29
MIC2777-29YM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.93V±5%, ±Reset PPO, Pb-free
Vcc&Vin detect, 2.93V±5%, ±Reset PPO, Pb-free
UN3
UM3730P-33
Union Semiconductor
SOT-353
SOT-353
Linear voltage regulator IC
LDO, 3.3V±2%, 150mA, +CE
LDO, 3.3V±2%, 150mA, +CE
UN31
MIC2777-31BM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 3..9V±5%, ±Reset PPO
Vcc&Vin detect, 3..9V±5%, ±Reset PPO
UN31
MIC2777-31YM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 3..9V±5%, ±Reset PPO, Pb-free
Vcc&Vin detect, 3..9V±5%, ±Reset PPO, Pb-free
UN44
MIC2777-44BM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 4.43V±5%, ±Reset PPO
Vcc&Vin detect, 4.43V±5%, ±Reset PPO
UN44
MIC2777-44YM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 4.43V±5%, ±Reset PPO, Pb-free
Vcc&Vin detect, 4.43V±5%, ±Reset PPO, Pb-free
UN46
MIC2777-46BM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 4.68V±5%, ±Reset PPO
Vcc&Vin detect, 4.68V±5%, ±Reset PPO
UN46
MIC2777-46YM5
Micrel
SOT-23-5
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 4.68V±5%, ±Reset PPO, Pb-free
Vcc&Vin detect, 4.68V±5%, ±Reset PPO, Pb-free
UN5
UM1330P-15
Union Semiconductor
SOT-353
SOT-353
Linear voltage regulator IC
LDO, 1.5V±2%, 150mA, +CE
LDO, 1.5V±2%, 150mA, +CE
UN6
UM1330P-16
Union Semiconductor
SOT-353
SOT-353
Linear voltage regulator IC
LDO, 1.6V±2%, 150mA, +CE
LDO, 1.6V±2%, 150mA, +CE
UN7
UM1330P-17
Union Semiconductor
SOT-353
SOT-353
Linear voltage regulator IC
LDO, 1.7V±2%, 150mA, +CE
LDO, 1.7V±2%, 150mA, +CE
UN8
UM1330P-18
Union Semiconductor
SOT-353
SOT-353
Linear voltage regulator IC
LDO, 1.8V±2%, 150mA, +CE
LDO, 1.8V±2%, 150mA, +CE
UN9
UM1330P-19
Union Semiconductor
SOT-353
SOT-353
Linear voltage regulator IC
LDO, 1.9V±2%, 150mA, +CE
LDO, 1.9V±2%, 150mA, +CE
UNA
UM1330P-20
Union Semiconductor
SOT-353
SOT-353
Linear voltage regulator IC
LDO, 2.0V±2%, 150mA, +CE
LDO, 2.0V±2%, 150mA, +CE
UNB
UM3730P-31
Union Semiconductor
SOT-353
SOT-353
Linear voltage regulator IC
LDO, 3.1V±2%, 150mA, +CE
LDO, 3.1V±2%, 150mA, +CE
UNC
UM1330P-21
Union Semiconductor
SOT-353
SOT-353
Linear voltage regulator IC
LDO, 2.1V±2%, 150mA, +CE
LDO, 2.1V±2%, 150mA, +CE
UNN
SN74AUC1G126YZP
Texas Instruments
BGA-5
BGA-5
CMOS logic IC
Bus buffer gate with 3-state output
Bus buffer gate with 3-state output
UNN
SN74AUC2G126YZP
Texas Instruments
BGA-8
BGA-8
CMOS logic IC
Bus buffer gate with 3-state output
Bus buffer gate with 3-state output
UNp
BZB84-C7V5
NXP Semiconductors
SOT-23
SOT-23
Zener diode
Dual, 7.5V±5%, If=200mA, 300mW
Dual, 7.5V±5%, If=200mA, 300mW
UNp
PZU16DB2/DG
NXP Semiconductors
SOT-353
SOT-353
Zener diode
Dual, 15.85..16.51V, Izt=5mA, Zzt=20, 250mW, H-free
Dual, 15.85..16.51V, Izt=5mA, Zzt=20, 250mW, H-free
UNQ
74LVC1G07QSE
Diodes
SOT-353
SOT-353
CMOS logic IC
Noninverting buffer/driver (ODO)
Noninverting buffer/driver (ODO)
UNQ
74LVC1G07QW5
Diodes
SOT-25
SOT-25
CMOS logic IC
Noninverting buffer/driver (ODO)
Noninverting buffer/driver (ODO)
UNR
74AUC1G126DCK
Texas Instruments
SC-70-5
SC-70-5
CMOS logic IC
Bus buffer gate with 3-state output
Bus buffer gate with 3-state output
UNR
SN74AUC1G126DCK
Texas Instruments
SC-70-5
SC-70-5
CMOS logic IC
Bus buffer gate with 3-state output
Bus buffer gate with 3-state output
UNt
BZB84-C7V5
NXP Semiconductors
SOT-23
SOT-23
Zener diode
Dual, 7.5V±5%, If=200mA, 300mW
Dual, 7.5V±5%, If=200mA, 300mW
UNt
PZU16DB2/DG
NXP Semiconductors
SOT-353
SOT-353
Zener diode
Dual, 15.85..16.51V, Izt=5mA, Zzt=20, 250mW, H-free
Dual, 15.85..16.51V, Izt=5mA, Zzt=20, 250mW, H-free
UNW
BZB84-C7V5
NXP Semiconductors
SOT-23
SOT-23
Zener diode
Dual, 7.5V±5%, If=200mA, 300mW
Dual, 7.5V±5%, If=200mA, 300mW
UNW
PZU16DB2/DG
NXP Semiconductors
SOT-353
SOT-353
Zener diode
Dual, 15.85..16.51V, Izt=5mA, Zzt=20, 250mW, H-free
Dual, 15.85..16.51V, Izt=5mA, Zzt=20, 250mW, H-free