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'

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
74LVC1G06FZ4
Diodes
DFN1410
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
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, Td=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), Bidirectional
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), Bidirectional
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), Bidirectional
UM
MCP1824T-1202E/OT
Microchip Technology
SOT-23-5
Linear voltage regulator IC
LDO, 1.2V±2%, 300mA, +CE
UM
P4SMAJ15CA
Won-Top Electronics
DO-214AC
Transient voltage supressor
Vrwm=15V, Vbr=16.7..19.2V, Ipp=16.4A, 400W(1ms), Bidirectional
UM
P4SMAJ15CA
Shanghai Lunsure Electronic Technology
DO-214AC
Transient voltage supressor
Vrwm=15V, Vbr=16.7..18.5V, Ipp=16.4A, 400W(1ms), Bidirectional
UM
P4SMAJ15CA
PanJIT Semiconductor
DO-214AC
Transient voltage supressor
Vrwm=15V, Vbr=16.7..19.2V, Ipp=16.4A, 400W(1ms), Bidirectional
UM
PT7M6314US35D3
Pericom Technology
SOT-143
Voltage detector IC
3.5V±1.5%, 200ms, -Restet 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), Bidirectional
UM
SMA6J15CA
Micro Commercial Components
DO-214AC
Transient voltage supressor
Vbr=16.7..18.5V, Vrwm=15V, Ipp=24.6A, 600W(1ms), Bidirectional
UM
SMAJ15CA
Leimao Electronic Technology
DO-214AC
Transient voltage supressor
Vrwm=15V, Vbr=16.7..18.5V, 16.4A, 400W(1ms), Bidirectional
UM
SMAJ15CA
Ruilong Yuan Electronics
DO-214AC
Transient voltage supressor
Vrwm=15V, Vbr=16.7..18.5V, 16.4A, 400W(1ms), Bidirectional
UM
SMAJ15CA
Lite-On Semiconductor
DO-214AC
Transient voltage supressor
Vrwm=15.0V, Vbr=16.7..18.5V, Ipp=16.4A, 400W(1ms), Bidirectional
UM
SMAJ15CA
Diodes
DO-214AC
Transient voltage supressor
Vrwm=15V, Vbr=16.7..18.5V, 16.4A, 400W(1ms), Bidirectional
UM
SMAJ15CAG
First Semiconductor
DO-214AC
Transient voltage supressor
Vrwm=15V, Vbr=16.7..19.2V, Ipp=16.4A, 400W(1ms), Bidirectional
UM
SMAS440CA
Formosa Microsemi
SMA-S
Transient voltage supressor
Vrwm=440V, Vbr=492..543V, Ipp=0.6A, 400W(1ms), Bidirectional
UM
SMBJ36CA
Fagor Electronica
DO-214AA
Transient voltage supressor
Vrm=36V, Vbr=40..44.2V, Ipp=10.3A, 600W, Bidirectional
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
SN74AUC1G125DCK
Texas Instruments
SC-70-5
CMOS logic IC
Bus buffer gate with 3-state output
UM
SN74AUC1G125YEA
Texas Instruments
BGA-5
CMOS logic IC
Bus buffer gate with 3-state output
UM
SN74AUC2G125YZP
Texas Instruments
BGA-8
CMOS logic IC
Dual bus buffer with 3-state output
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, 400ms Rt delay
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, Inrush current protection
UM
XC6604B141MR-G
Torex Semiconductor
SOT-26W
Linear voltage regulator IC
LDO, 1.4V±20mV, 1A, +CE
UM-
BZB84-C6V8
Philips
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, Halogen free
UM05
LUMA105
Leshan Radio Company
DO-214AC
Diode
Ultra fast recov. rectif, 50V, 1A, Vf<093V(1A), <35ns
UM10
LUMA110
Leshan Radio Company
DO-214AC
Diode
Ultra fast recov. rectif, 100V, 1A, Vf<0.93V(1A), <35ns
UM15
LUMA115
Leshan Radio Company
DO-214AC
Diode
Ultra fast recov. rectif, 150V, 1A, Vf<0.93V(1A), <35ns
UM20
LUMA120
Leshan Radio Company
DO-214AC
Diode
Ultra fast recov. rectif, 200V, 1A, Vf<0.93V(1A), <35ns
UM205
LUMBF205
Leshan Radio Company
SMB-FL
Diode
Ultra fast recov. rectif, 50V, 2A, Vf<093V(2A), <35ns
UM210
LUMBF210
Leshan Radio Company
SMB-FL
Diode
Ultra fast recov. rectif, 100V, 2A, Vf<0.93V(2A), <35ns
UM215
LUMBF215
Leshan Radio Company
SMB-FL
Diode
Ultra fast recov. rectif, 150V, 2A, Vf<0.93V(2A), <35ns
UM220
LUMBF220
Leshan Radio Company
SMB-FL
Diode
Ultra fast recov. rectif, 200V, 2A, Vf<0.93V(2A), <35ns
UM240
LUMBF240
Leshan Radio Company
SMB-FL
Diode
Ultra fast recov. rectif, 400V, 2A, Vf<1.25V(2A), <50ns
UM250
LUMBF250
Leshan Radio Company
SMB-FL
Diode
Ultra fast recov. rectif, 500V, 2A, Vf<1.25V(2A), <50ns
UM260
LUMBF260
Leshan Radio Company
SMB-FL
Diode
Ultra fast recov. rectif, 600V, 2A, Vf<1.5V(2A), <50ns
UM40
LUMA140
Leshan Radio Company
DO-214AC
Diode
Ultra fast recov. rectif, 400V, 1A, Vf<1.25V(1A), <50ns
UM50
LUMA150
Leshan Radio Company
DO-214AC
Diode
Ultra fast recov. rectif, 500V, 1A, Vf<1.25V(1A), <50ns
UM60
LUMA160
Leshan Radio Company
DO-214AC
Diode
Ultra fast recov. rectif, 600V, 1A, Vf<1.5V(1A), <50ns
UMp
BZB84-C6V8
Philips
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, Halogen free
UMQ
2SC5730Q
Rohm
TSMT3
NPN transistor
Sw, 30V, 1A, 500mW, B=120..270, 270MHz
UMR
2SC5730R
Rohm
TSMT3
NPN transistor
Sw, 30V, 1A, 500mW, B=180..390, 270MHz
UMt
BZB84-C6V8
Philips
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, Halogen free
UMW
BZB84-C6V8
Philips
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, Halogen free