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 'UM'
Tap on the package name to see a picture of it
Marking
Name
Manufacturer/Case
Function
UM
GDZ27B-V-G
Vishay Semiconductor
SOD-323
Zener diode
26.19..27.53V, Izt=5mA, Zzt=150, 200mW
UM
LT4ME15CA
Lite-On Semiconductor
DO-219
Transient voltage supressor
Vrwm=15V, Vbr=16.7..18.5V, Ipp=16.4A, 400W(1ms), Bidir.
UM
SMF4L15CAQ
Diodes
DO-219AA
Transient voltage supressor
Vrwm=15V, Vbr=16.7..18.5V, Ipp=16.4A, 400W(1ms), Bidir.
UM
BZX84J-C5V6
NXP Semiconductors
SOD-323FL
Zener diode
5.6V±5%, If=250mA, 550mW
UM
CZRER12VB-H
Comchip Technology
SOD-723F
Zener diode
11.70 12.30V, Zzt=22, Izt=5mA, 150mW
UM
SMBJ36CA
Fagor Electronica
DO-214AA
Transient voltage supressor
Vrm=36V, Vbr=40..44.2V, Ipp=10.3A, 600W, Bidir.
UM
CD214A-T15CA
Bourns
DO-214AC
Transient voltage supressor
Vrwm=15V, Irsm=16.4A, 400W(1ms), Bidir.
UM
EC76SMAJ440CA
E-CMOS
DO-214AC
Transient voltage supressor
Vbr=492..543V, Vrwm=440V, Ipp=0.6A, 400W(1ms), Bidir.
UM
P4SMAJ15CA
Won-Top Electronics
DO-214AC
Transient voltage supressor
Vrwm=15V, Vbr=16.7..19.2V, Ipp=16.4A, 400W(1ms), Bidir.
UM
P4SMAJ15CA
Shanghai Lunsure Electronic Technology
DO-214AC
Transient voltage supressor
Vrwm=15V, Vbr=16.7..18.5V, Ipp=16.4A, 400W(1ms), Bidir.
UM
P4SMAJ15CA
PanJIT Semiconductor
DO-214AC
Transient voltage supressor
Vrwm=15V, Vbr=16.7..19.2V, Ipp=16.4A, 400W(1ms), Bidir.
UM
SMA6J15CA
Micro Commercial Components
DO-214AC
Transient voltage supressor
Vbr=16.7..18.5V, Vrwm=15V, Ipp=24.6A, 600W(1ms), Bidir.
UM
SMAJ15CA
Leimao Electronic Technology
DO-214AC
Transient voltage supressor
Vrwm=15V, Vbr=16.7..18.5V, 16.4A, 400W(1ms), Bidir.
UM
SMAJ15CA
Lite-On Semiconductor
DO-214AC
Transient voltage supressor
Vrwm=15.0V, Vbr=16.7..18.5V, Ipp=16.4A, 400W(1ms), Bidir.
UM
SMAJ15CA
Diodes
DO-214AC
Transient voltage supressor
Vrwm=15V, Vbr=16.7..18.5V, 16.4A, 400W(1ms), Bidir.
UM
SMAJ15CA
Ruilong Yuan Electronics
DO-214AC
Transient voltage supressor
Vrwm=15V, Vbr=16.7..18.5V, 16.4A, 400W(1ms), Bidir.
UM
SMAJ15CAG
First Semiconductor
DO-214AC
Transient voltage supressor
Vrwm=15V, Vbr=16.7..19.2V, Ipp=16.4A, 400W(1ms), Bidir.
UM
SMAJ440CA
Yint Electronics
DO-214AC
Transient voltage supressor
Vrwm=440.0V, Vbr=492.0..543.0V, Ipp=0.56A, 400W(1ms), Bidir.
UM
US1M
Vishay Semiconductor
DO-214AC
Diode
Rectifier, 1000V, 1A, Vf<1.7V(1A) 75ns, 15pF
UM
SMAS440CA
Formosa Microsemi
SMA-S
Transient voltage supressor
Vrwm=440V, Vbr=492..543V, Ipp=0.6A, 400W(1ms), Bidir.
UM
SM4T24CA
SGS-Thomson Microelectronics
SOD-6
Transient voltage supressor
Vrwm=24V, 12A, 400W(1ms), Bidir.
UM
CZRQR12VB
Comchip Technology
0402
Zener diode
11.70..12.30V, Izt=5mA, Zzt=22, 125mW
UM
CZRF12VB
Comchip Technology
1005
Zener diode
11.70..12.30V, Izt=5mA, Zzt=22, 200mW
UM
CZRFR12VB-HF
Comchip Technology
1005
Zener diode
11.70..12.30V, Zzt=22, Izt=5mA, 200mW
UM
CZRU12VB
Comchip Technology
0603
Zener diode
11.70..12.30V, Izt=5mA, Zzt=22, 150mW
UM
CZRUR12VB-HF
Comchip Technology
0603
Zener diode
11.70..12.30V, Zzt=22, Izt=5mA, 150mW
UM
SMD30KPA42A
MDE Semiconductor
MDE-1-1
Transient voltage supressor
Vrwm=42.0V, Vbr=46.9V, Vcl=72.0V, Ipp=420.8A, 30000W(1ms)
UM
SMD15KPA43A
MDE Semiconductor
MDE-1-2
Transient voltage supressor
Vrwm=43.0V, Vbr=48.0V, Vcl=69.8V, Ipp=216.3A, 15000W(1ms)
UM
2SC3618-M
NEC Electronics
SOT-89
NPN transistor
AF-Amp, Sw, 25V, 1A, 2W, 250MHz, B=900..1600
UM
PT7M6314US35D3
Pericom Technology
SOT-143
Voltage detector IC
3.5V±1.5%, 200ms, -Reset PPO, -MR
UM
IXD5127C34JNR
IXYS
SSOT-24
Voltage detector IC
3.4V±0.8%, +Reset PPO, -MR, 400ms Rt delay
UM
XC6127C34JNR
Torex Semiconductor
SSOT-24
Voltage detector IC
3.4V±0.8%, +Reset PPO, -MR, Rdt=400ms
UM
XC6215B502NR
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 5.0V±2%, 200mA, +CE
UM
XC6223E29BNR-G
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 2.95V±1%, 300mA, +CE, ICP
UM
XC6237B36BNR-G
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 3.65V±1%, 150mA, +CE
UM
RP130K451B
Ricoh
DFN1010-4
Linear voltage regulator IC
LDO, LN, +CE, 4.5V±1%, 150mA
UM
XC6237B36B9R-G
Torex Semiconductor
USPQ-4B05
Linear voltage regulator IC
LDO, 3.65V±1%, 150mA, +CE
UM
MCP1824T-1202E/OT
Microchip Technology
SOT-23-5
Linear voltage regulator IC
LDO, 1.2V±2%, 300mA, +CE
UM
74LVC1G06W5
Diodes
SOT-25
CMOS logic IC
Inverter (ODO)
UM
74LVC1G06SE
Diodes
SOT-353
CMOS logic IC
Inverter (ODO)
UM
BD45452G
Rohm
SSOP-5
Voltage detector IC
4.5V±1%, -MR, -Reset ODO, 200ms
UM
74LVC1G06Z
Diodes
SOT-553
CMOS logic IC
Inverter (ODO)
UM
NL17SV32XV5
ON Semiconductor
SOT-553
CMOS logic IC
2-input OR gate
UM
R5323N047B
Ricoh
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.6V/2.8V±1%, 150mA, +CE, CL
UM
XC6604B141MR-G
Torex Semiconductor
SOT-26W
Linear voltage regulator IC
LDO, 1.4V±20mV, 1A, +CE
UM
RP152L012C
Ricoh
DFN1212-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.8V/2.6V±1%, 150mA, +CE, CL
UM
74LVC1G06FW4
Diodes
X2-DFN1010-6
CMOS logic IC
Inverter (ODO)
UM
74LVC1G06FZ4
Diodes
X2-DFN1410-6
CMOS logic IC
Inverter (ODO)
Um
BD45E285G-M
Rohm
SSOP-5
Voltage detector IC
2.8V±1%, -MR, -Reset ODO, Rdt=50ms
UM-
BZB84-C6V8
NXP Semiconductors
SOT-23
Zener diode
Dual, 6.8V±5%, If=200mA, 300mW
UM-
PZU15DB2/DG
NXP Semiconductors
SOT-353
Zener diode
Dual, 14.34..14.98V, Izt=5mA, Zzt=15, 250mW, H-free
UM5
74AUC1G125DCK
Texas Instruments
SC-70-5
CMOS logic IC
Bus buffer gate with 3-state output
UM5
SN74AUC1G125DCK
Texas Instruments
SC-70-5
CMOS logic IC
Bus buffer gate with 3-state output
UMF
74AUC1G125DCK
Texas Instruments
SC-70-5
CMOS logic IC
Bus buffer gate with 3-state output
UMF
SN74AUC1G125DCK
Texas Instruments
SC-70-5
CMOS logic IC
Bus buffer gate with 3-state output
UMN
SN74AUC1G125YEA
Texas Instruments
BGA-5
CMOS logic IC
Bus buffer gate with 3-state output
UMN
SN74AUC2G125YZP
Texas Instruments
BGA-8
CMOS logic IC
Dual bus buffer with 3-state output
UMO
2SC5730K-O
Rohm
SMT3
NPN transistor
Sw, Hi-sp, 30V, 1A, 200mW, B=120..270, 280MHz
UMp
BZB84-C6V8
NXP Semiconductors
SOT-23
Zener diode
Dual, 6.8V±5%, If=200mA, 300mW
UMp
PZU15DB2/DG
NXP Semiconductors
SOT-353
Zener diode
Dual, 14.34..14.98V, Izt=5mA, Zzt=15, 250mW, H-free
UMQ
74LVC1G06QW5
Diodes
SOT-25
CMOS logic IC
Inverter (ODO)
UMQ
74LVC1G06QSE
Diodes
SOT-353
CMOS logic IC
Inverter (ODO)
UMQ
2SC5730Q
Rohm
TSMT3
NPN transistor
Sw, 30V, 1A, 500mW, B=120..270, 270MHz
UMR
74AUC1G125DCK
Texas Instruments
SC-70-5
CMOS logic IC
Bus buffer gate with 3-state output
UMR
SN74AUC1G125DCK
Texas Instruments
SC-70-5
CMOS logic IC
Bus buffer gate with 3-state output
UMR
2SC5730R
Rohm
TSMT3
NPN transistor
Sw, 30V, 1A, 500mW, B=180..390, 270MHz
UMt
BZB84-C6V8
NXP Semiconductors
SOT-23
Zener diode
Dual, 6.8V±5%, If=200mA, 300mW
UMt
PZU15DB2/DG
NXP Semiconductors
SOT-353
Zener diode
Dual, 14.34..14.98V, Izt=5mA, Zzt=15, 250mW, H-free
UMW
BZB84-C6V8
NXP Semiconductors
SOT-23
Zener diode
Dual, 6.8V±5%, If=200mA, 300mW
UMW
PZU15DB2/DG
NXP Semiconductors
SOT-353
Zener diode
Dual, 14.34..14.98V, Izt=5mA, Zzt=15, 250mW, H-free
UMY
2SC5730K-Y
Rohm
SMT3
NPN transistor
Sw, Hi-sp, 30V, 1A, 200mW, B=180..390, 280MHz
UM05
LUMA105
Leshan Radio Company
DO-214AC
Diode
U-fast recov. rectif, 50V, 1A, Vf<093V(1A), <35ns
UM10
LUMA110
Leshan Radio Company
DO-214AC
Diode
U-fast recov. rectif, 100V, 1A, Vf<0.93V(1A), <35ns
UM15
LUMA115
Leshan Radio Company
DO-214AC
Diode
U-fast recov. rectif, 150V, 1A, Vf<0.93V(1A), <35ns
UM20
LUMA120
Leshan Radio Company
DO-214AC
Diode
U-fast recov. rectif, 200V, 1A, Vf<0.93V(1A), <35ns
UM40
LUMA140
Leshan Radio Company
DO-214AC
Diode
U-fast recov. rectif, 400V, 1A, Vf<1.25V(1A), <50ns
UM50
LUMA150
Leshan Radio Company
DO-214AC
Diode
U-fast recov. rectif, 500V, 1A, Vf<1.25V(1A), <50ns
UM60
LUMA160
Leshan Radio Company
DO-214AC
Diode
U-fast recov. rectif, 600V, 1A, Vf<1.5V(1A), <50ns
UM205
LUMBF205
Leshan Radio Company
SMB-FL
Diode
U-fast recov. rectif, 50V, 2A, Vf<093V(2A), <35ns
UM210
LUMBF210
Leshan Radio Company
SMB-FL
Diode
U-fast recov. rectif, 100V, 2A, Vf<0.93V(2A), <35ns
UM215
LUMBF215
Leshan Radio Company
SMB-FL
Diode
U-fast recov. rectif, 150V, 2A, Vf<0.93V(2A), <35ns
UM220
LUMBF220
Leshan Radio Company
SMB-FL
Diode
U-fast recov. rectif, 200V, 2A, Vf<0.93V(2A), <35ns
UM240
LUMBF240
Leshan Radio Company
SMB-FL
Diode
U-fast recov. rectif, 400V, 2A, Vf<1.25V(2A), <50ns
UM250
LUMBF250
Leshan Radio Company
SMB-FL
Diode
U-fast recov. rectif, 500V, 2A, Vf<1.25V(2A), <50ns
UM260
LUMBF260
Leshan Radio Company
SMB-FL
Diode
U-fast recov. rectif, 600V, 2A, Vf<1.5V(2A), <50ns

Other codes starting with 'U…' :