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 'UN'

Marking
Name
Manufacturer/Case
Function
UN
3SK240
Toshiba
SOT-143
FET n-type
GaAs, Dual gate, UHF, 9V, Idss=6..20mA
UN
3SK274
Toshiba
SOT-143
FET n-type
GaAs, Dual gate, UHF, RF-Amp, 9V, Idss=6..20mA, 100mW, 19ms
UN
74LVC1G07FZ4
Diodes
DFN1410
Capacitance diode
Noninverting buffer/driver (ODO)
UN
74LVC1G07SE
Diodes
SOT-353
Capacitance diode
Noninverting buffer/driver (ODO)
UN
74LVC1G07W5
Diodes
SOT-25
Capacitance diode
Noninverting buffer/driver (ODO)
UN
BD45442G
Rohm
SSOP-5
Voltage detector IC
4.4V±1%, -MR, -Reset ODO, 200ms
Un
BD45E295G-M
Rohm
SSOP-5
Voltage detector IC
2.9V±1%, -MR, -Reset ODO, Td=50ms
UN
BZX84J-C62
NXP Semiconductors
SOD-323FL
Zener diode
62V±5%, If=250mA, 550mW
UN
CZRER13VB
Comchip Technology
SOD-723F
Zener diode
12.68 13.32V, Zzt=25, Izt=5mA, 150mW
UN
CZRF13VB
Comchip Technology
1005
Zener diode
12.68..13.32V, Izt=5mA, Zzt=25, 200mW
UN
CZRFR13VB-HF
Comchip Technology
1005
Zener diode
12.68..13.32V, Zzt=25, Izt=5mA, 200mW
UN
CZRQR13VB
Comchip Technology
0402
Zener diode
12.68..13.32V, Izt=5mA, Zzt=25, 125mW
UN
CZRU13VB
Comchip Technology
0603
Zener diode
12.68..13.32V, Izt=5mA, Zzt=25, 150mW
UN
CZRUR13VB-HF
Comchip Technology
0603
Zener diode
12.68..13.32V, Zzt=25, Izt=5mA, 150mW
UN
FUF2A
Fagor Electronica
DO-214AA
Diode
U-fast Rec. Rect., 50V, 2A, Vf<1.3V(2A), 50ns
UN
GDZ30B-V-G
Vishay Semiconductor
SOD-323
Zener diode
29.19..30.69V, Izt=5mA, Zzt=200, 200mW
UN
P4SMAJ16C
PanJIT Semiconductor
DO-214AB
Transient voltage supressor
Vrwm=16V, 13.8A, 400W (1ms), Bidir.
UN
PT7M6314US35D4

SOT-143
Voltage detector IC
3.5V±1.5%, 1570ms, -Restet PPO, -MR
UN
R5323N011A
Ricoh
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=3.3V/3.0V±1%, 150mA, +CE
UN
RP130K461B
Ricoh
DFN1010-4
Linear voltage regulator IC
LDO, LN, +CE, 4.6V±1%, 150mA
UN
RP152L013C
Ricoh
DFN1212-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=3.3V/2.8V±1%, 150mA, +CE, CL
UN
SM4T27C
SGS-Thomson Microelectronics
SOD-6
Transient voltage supressor
Vrwm=27V, 10.7A, 400W(1ms), Bidir.
UN
SN74AUC1G126DCK
Texas Instruments
SC-70-5
Capacitance diode
Bus buffer gate with 3-state output
UN
SN74AUC1G126YZP
Texas Instruments
BGA-5
Capacitance diode
Bus buffer gate with 3-state output
UN
SN74AUC2G126DCU
Texas Instruments
VSSOP-8
Capacitance diode
Bus buffer gate with 3-state output
UN
SN74AUC2G126YZP
Texas Instruments
BGA-8
Capacitance diode
Bus buffer gate with 3-state output
UN
XC6127C36JNR
Torex Semiconductor
SSOT-24
Voltage detector IC
3.6V±0.8%, +Reset PPO, -MR, Rt=400ms
UN
XC6223E30BNR-G
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 3.05V±1%, 300mA, +CE, ICP
UN
XC6604B151MR-G
Torex Semiconductor
SOT-26W
Linear voltage regulator IC
LDO, 1.5V±20mV, 1A, +CE
UN-
BZB84-C7V5

SOT-23
Zener diode
Dual, 7.5V±5%, If=200mA, 300mW
UN-
PZU16DB2/DG

SOT-353
Zener diode
Dual, 15.85..16.51V, Izt=5mA, Zzt=20, 250mW, Halogen free
UN17
MIC2777-17BM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 1.69V±5%, ±Reset PPO
UN17
MIC2777-17YM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 1.69V±5%, ±Reset PPO, Pb. Free
UN22
MIC2777-22BM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.25V±5%, ±Reset PPO
UN22
MIC2777-22YM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.25V±5%, ±Reset PPO, Pb. Free
UN23
MIC2777-23BM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.34V±5%, ±Reset PPO
UN23
MIC2777-23YM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.34V±5%, ±Reset PPO, Pb. Free
UN25
MIC2777-25BM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.53V±5%, ±Reset PPO
UN25
MIC2777-25YM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.53V±5%, ±Reset PPO, Pb. Free
UN26
MIC2777-26BM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.67V±5%, ±Reset PPO
UN26
MIC2777-26YM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.67V±5%, ±Reset PPO, Pb. Free
UN28
MIC2777-28BM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.81V±5%, ±Reset PPO
UN28
MIC2777-28YM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.81V±5%, ±Reset PPO, Pb. Free
UN29
MIC2777-29BM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.93V±5%, ±Reset PPO
UN29
MIC2777-29YM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 2.93V±5%, ±Reset PPO, Pb. Free
UN31
MIC2777-31BM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 3..9V±5%, ±Reset PPO
UN31
MIC2777-31YM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 3..9V±5%, ±Reset PPO, Pb. Free
UN44
MIC2777-44BM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 4.43V±5%, ±Reset PPO
UN44
MIC2777-44YM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 4.43V±5%, ±Reset PPO, Pb. Free
UN46
MIC2777-46BM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 4.68V±5%, ±Reset PPO
UN46
MIC2777-46YM5
Micrel
SOT-23-5
Voltage detector IC
Vcc&Vin detect, 4.68V±5%, ±Reset PPO, Pb. Free
UNp
BZB84-C7V5

SOT-23
Zener diode
Dual, 7.5V±5%, If=200mA, 300mW
UNp
PZU16DB2/DG

SOT-353
Zener diode
Dual, 15.85..16.51V, Izt=5mA, Zzt=20, 250mW, Halogen free
UNt
BZB84-C7V5
Philips
SOT-23
Zener diode
Dual, 7.5V±5%, If=200mA, 300mW
UNt
PZU16DB2/DG
NXP Malaysia
SOT-353
Zener diode
Dual, 15.85..16.51V, Izt=5mA, Zzt=20, 250mW, Halogen free
UNW
BZB84-C7V5

SOT-23
Zener diode
Dual, 7.5V±5%, If=200mA, 300mW
UNW
PZU16DB2/DG

SOT-353
Zener diode
Dual, 15.85..16.51V, Izt=5mA, Zzt=20, 250mW, Halogen free