The ultimate SMD marking codes database

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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'

Marking
Name
Manufacturer/Case
Function
UM
2SC3618-M
NEC Electronics
SOT-89
NPN transistor
AF-Amp, Sw, 25V, 1A, 2W, 250MHz, B=900..1600
UM
74LVC1G06FW4
Diodes
X2-DFN1010-6
CMOS logic IC
Inverter (ODO)
UM
74LVC1G06FZ4
Diodes
X2-DFN1410-6
CMOS logic IC
Inverter (ODO)
UM
74LVC1G06SE
Diodes
SOT-353
CMOS logic IC
Inverter (ODO)
UM
74LVC1G06W5
Diodes
SOT-25
CMOS logic IC
Inverter (ODO)
UM
74LVC1G06Z
Diodes
SOT-553
CMOS logic IC
Inverter (ODO)
UM
BD45452G
Rohm
SSOP-5
Voltage detector IC
4.5V±1%, -MR, -Reset ODO, 200ms
Um
BD45E285G-M
Rohm
SSOP-5
Voltage detector IC
2.8V±1%, -MR, -Reset ODO, Rdt=50ms
UM
BZX84J-C5V6
NXP Semiconductors
SOD-323FL
Zener diode
5.6V±5%, If=250mA, 550mW
UM
CD214A-T15CA
Bourns
DO-214AC
Transient voltage supressor
Vrwm=15V, Irsm=16.4A, 400W(1ms), Bidir.
UM
CZRER12VB-H
Comchip Technology
SOD-723F
Zener diode
11.70 12.30V, Zzt=22, Izt=5mA, 150mW
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
CZRQR12VB
Comchip Technology
0402
Zener diode
11.70..12.30V, Izt=5mA, Zzt=22, 125mW
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
EC76SMAJ440CA
E-CMOS
DO-214AC
Transient voltage supressor
Vbr=492..543V, Vrwm=440V, Ipp=0.6A, 400W(1ms), Bidir.
UM
GDZ27B-V-G
Vishay Semiconductor
SOD-323
Zener diode
26.19..27.53V, Izt=5mA, Zzt=150, 200mW
UM
IXD5127C34JNR
IXYS
SSOT-24
Voltage detector IC
3.4V±0.8%, +Reset PPO, -MR, 400ms Rt delay
UM
LT4ME15CA
Lite-On Semiconductor
DO-219
Transient voltage supressor
Vrwm=15V, Vbr=16.7..18.5V, Ipp=16.4A, 400W(1ms), Bidir.
UM
MCP1824T-1202E/OT
Microchip Technology
SOT-23-5
Linear voltage regulator IC
LDO, 1.2V±2%, 300mA, +CE
UM
NL17SV32XV5
ON Semiconductor
SOT-553
CMOS logic IC
2-input OR gate
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
PanJIT Semiconductor
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
PT7M6314US35D3
Pericom Technology
SOT-143
Voltage detector IC
3.5V±1.5%, 200ms, -Reset PPO, -MR
UM
R5323N047B
Ricoh
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.6V/2.8V±1%, 150mA, +CE, CL
UM
RP130K451B
Ricoh
DFN1010-4
Linear voltage regulator IC
LDO, LN, +CE, 4.5V±1%, 150mA
UM
RP152L012C
Ricoh
DFN1212-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.8V/2.6V±1%, 150mA, +CE, CL
UM
SM4T24CA
SGS-Thomson Microelectronics
SOD-6
Transient voltage supressor
Vrwm=24V, 12A, 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
Ruilong Yuan Electronics
DO-214AC
Transient voltage supressor
Vrwm=15V, Vbr=16.7..18.5V, 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
Lite-On Semiconductor
DO-214AC
Transient voltage supressor
Vrwm=15.0V, Vbr=16.7..18.5V, Ipp=16.4A, 400W(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
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
SMAS440CA
Formosa Microsemi
SMA-S
Transient voltage supressor
Vrwm=440V, Vbr=492..543V, Ipp=0.6A, 400W(1ms), Bidir.
UM
SMBJ36CA
Fagor Electronica
DO-214AA
Transient voltage supressor
Vrm=36V, Vbr=40..44.2V, Ipp=10.3A, 600W, Bidir.
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
SMD30KPA42A
MDE Semiconductor
MDE-1-1
Transient voltage supressor
Vrwm=42.0V, Vbr=46.9V, Vcl=72.0V, Ipp=420.8A, 30000W(1ms)
UM
SMF4L15CAQ
Diodes
DO-219AA
Transient voltage supressor
Vrwm=15V, Vbr=16.7..18.5V, Ipp=16.4A, 400W(1ms), Bidir.
UM
US1M
Vishay Semiconductor
DO-214AC
Diode
Rectifier, 1000V, 1A, Vf<1.7V(1A) 75ns, 15pF
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
XC6237B36B9R-G
Torex Semiconductor
USPQ-4B05
Linear voltage regulator IC
LDO, 3.65V±1%, 150mA, +CE
UM
XC6237B36BNR-G
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 3.65V±1%, 150mA, +CE
UM
XC6604B141MR-G
Torex Semiconductor
SOT-26W
Linear voltage regulator IC
LDO, 1.4V±20mV, 1A, +CE
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
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
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
UM40
LUMA140
Leshan Radio Company
DO-214AC
Diode
U-fast recov. rectif, 400V, 1A, Vf<1.25V(1A), <50ns
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
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
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
2SC5730Q
Rohm
TSMT3
NPN transistor
Sw, 30V, 1A, 500mW, B=120..270, 270MHz
UMQ
74LVC1G06QSE
Diodes
SOT-353
CMOS logic IC
Inverter (ODO)
UMQ
74LVC1G06QW5
Diodes
SOT-25
CMOS logic IC
Inverter (ODO)
UMR
2SC5730R
Rohm
TSMT3
NPN transistor
Sw, 30V, 1A, 500mW, B=180..390, 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
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
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