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 'QM'

Marking
Name
Manufacturer/Case
Function
QM
1SMA7.0A
ON Semiconductor
403B-01
Transient voltage supressor
Vrwm=7V±5%, 33.3A, 400W (1ms)
QM
APX809S00-46SR-7
Diodes
SOT-23
Voltage detector IC
4.63V±1.5%, -Reset PPO, 1.7ms Rt delay
QM
BD5331FVE
Rohm
VSOF-5
Voltage detector IC
3.1V±1%, -Reset PPO
QM
BD5331G
Rohm
SSOP-5
Voltage detector IC
3.1V±1%, -Reset PPO
Qm
BD53E38G-M
Rohm
SSOP-5
Voltage detector IC
3.8V±1%, -Reset PPO
QM
EC76SMBJ440A
E-CMOS
DO-214AA
Transient voltage supressor
Vbr=492..543V, Vrwm=440V, Ipp=0.9A, 600W(1ms)
QM
MAQ5300-1.5
Micrel
MLF-6
Linear voltage regulator IC
LDO, 1.5V±2%, 300mA, +CE
QM
MAQ5300-1.8
Micrel
MLF-6
Linear voltage regulator IC
LDO, 1.8V±2%, 300mA, +CE
QM
MAQ5300-2.5
Micrel
MLF-6
Linear voltage regulator IC
LDO, 2.5V±2%, 300mA, +CE
QM
MAQ5300-2.8
Micrel
MLF-6
Linear voltage regulator IC
LDO, 2.8V±2%, 300mA, +CE
QM
MAQ5300-2.85
Micrel
MLF-6
Linear voltage regulator IC
LDO, 2.85V±2%, 300mA, +CE
QM
MAQ5300-3.0
Micrel
MLF-6
Linear voltage regulator IC
LDO, 3.0V±2%, 300mA, +CE
QM
MAQ5300-3.3
Micrel
MLF-6
Linear voltage regulator IC
LDO, 3.3V±2%, 300mA, +CE
QM
MCP100T-450I
Microchip Technology
SOT-23
Voltage detector IC
4.5V+150mV, -Reset PPO
QM
P6SMB24CA
Fagor Electronica
DO-214AA
Transient voltage supressor
Vrwm=24V, Vbr=22.8..25.2V, 18.1A, 600W(1ms), Bidirectional
QM
PT7M7050CLTA
Pericom Technology
SOT-23-5
Voltage detector IC
5.0V±1.5%, -Reset PPO
QM
PT7M7050CLTAE
Pericom Technology
SOT-23-5
Voltage detector IC
5.0V±1.5%, -Reset PPO, Lead free
QM
R1118K401D
Ricoh
DFN1612-4B
Linear voltage regulator IC
4V±1%, 150mA, +CE, CL
QM
RP152L012A
Ricoh
DFN1212-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.8V/2.6V±1%, 150mA, +CE
QM
SMBJ350A
Starsea Electronic
DO-214AA
Transient voltage supressor
Vbr=391..432V, Vrwm=350V, Ipp=1.1A, 600W(1ms)
QM
SMBJ350A
Leimao Electronic Technology
DO-214AA
Transient voltage supressor
Vbr=391..432V, Vrwm=350V, Ipp=1.1A, 600W(1ms)
QM
SMBJ350A-T
INPAQ Technology
DO-214AA
Transient voltage supressor
Vbr=391..432V, Vrwm=350V, Ipp=1.1A, 600W(1ms)
QM
SMBJ440A
Yint Electronics
DO-214AA
Transient voltage supressor
Vbr=492..543V, Vrwm=440V, Ipp=0.9A, 600W(1ms)
QM
SMBJ440A
Socay Electronics
DO-214AA
Transient voltage supressor
Vrwm=440.0V, Vbr=492.0..543.0V, Ipp=0.84A, 600W(1ms)
QM
SMBJ440A
Bourns
DO-214AA
Transient voltage supressor
Vbr=492..543V, Vrwm=440V, Ipp=0.9A, 600W(1ms)
QM
SMBJ440A
Ruilong Yuan Electronics
DO-214AA
Transient voltage supressor
Vbr=492..543V, Vrwm=440V, Ipp=0.9A, 600W(1ms)
QM
SMBJ440A
StarHope
DO-214AA
Transient voltage supressor
Vbr=492..543V, Vrwm=440V, Ipp=0.9A, 600W(1ms)
QM
SMBJ440A
Lucky Forest
DO-214AA
Transient voltage supressor
Vbr=492..543V, Vrwm=440V, Ipp=0.9A, 600W(1ms)
QM
TV06B441J-G
Comchip Technology
DO-214AA
Transient voltage supressor
Vrwm=440.0V, Vbr=492.0..543.0V, Ipp=0.84A, 600W(1ms)
QMA
S-1132B41-I6T2G
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, 4.1V±1.0%, 300mA, +CE
QMA
S-1132B41-M5T1G
Seiko Instruments
SOT-23-5
Linear voltage regulator IC
LDO, 4.1V±1.0%, 300mA, +CE
QMA
S-1132B41-U5T1G
Seiko Instruments
SOT-89-5
Linear voltage regulator IC
LDO, 4.1V±1%, 300mA, +CE
QMA
TPSMBJ440A-VR
Littelfuse
DO-214AA
Transient voltage supressor
Vrwm=440.0V, Vbr=492.0..543.0V, Ipp=0.9A, 600W(1ms)
QMB
S-1132B42-I6T2G
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, 4.2V±1.0%, 300mA, +CE
QMB
S-1132B42-M5T1G
Seiko Instruments
SOT-23-5
Linear voltage regulator IC
LDO, 4.2V±1.0%, 300mA, +CE
QMB
S-1132B42-U5T1G
Seiko Instruments
SOT-89-5
Linear voltage regulator IC
LDO, 4.2V±1%, 300mA, +CE
QMC
S-1132B43-I6T2G
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, 4.3V±1.0%, 300mA, +CE
QMC
S-1132B43-M5T1G
Seiko Instruments
SOT-23-5
Linear voltage regulator IC
LDO, 4.3V±1.0%, 300mA, +CE
QMC
S-1132B43-U5T1G
Seiko Instruments
SOT-89-5
Linear voltage regulator IC
LDO, 4.3V±1%, 300mA, +CE
QMD
S-1132B44-I6T2G
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, 4.4V±1.0%, 300mA, +CE
QMD
S-1132B44-M5T1G
Seiko Instruments
SOT-23-5
Linear voltage regulator IC
LDO, 4.4V±1.0%, 300mA, +CE
QMD
S-1132B44-U5T1G
Seiko Instruments
SOT-89-5
Linear voltage regulator IC
LDO, 4.4V±1%, 300mA, +CE
QME
S-1132B45-I6T2G
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, 4.5V±1.0%, 300mA, +CE
QME
S-1132B45-M5T1G
Seiko Instruments
SOT-23-5
Linear voltage regulator IC
LDO, 4.5V±1.0%, 300mA, +CE
QME
S-1132B45-U5T1G
Seiko Instruments
SOT-89-5
Linear voltage regulator IC
LDO, 4.5V±1%, 300mA, +CE
QMF
S-1132B46-I6T2G
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, 4.6V±1.0%, 300mA, +CE
QMF
S-1132B46-M5T1G
Seiko Instruments
SOT-23-5
Linear voltage regulator IC
LDO, 4.6V±1.0%, 300mA, +CE
QMF
S-1132B46-U5T1G
Seiko Instruments
SOT-89-5
Linear voltage regulator IC
LDO, 4.6V±1%, 300mA, +CE
QMG
S-1132B47-I6T2G
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, 4.7V±1.0%, 300mA, +CE
QMG
S-1132B47-M5T1G
Seiko Instruments
SOT-23-5
Linear voltage regulator IC
LDO, 4.7V±1.0%, 300mA, +CE
QMG
S-1132B47-U5T1G
Seiko Instruments
SOT-89-5
Linear voltage regulator IC
LDO, 4.7V±1%, 300mA, +CE
QMH
S-1132B48-I6T2G
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, 4.8V±1.0%, 300mA, +CE
QMH
S-1132B48-M5T1G
Seiko Instruments
SOT-23-5
Linear voltage regulator IC
LDO, 4.8V±1.0%, 300mA, +CE
QMH
S-1132B48-U5T1G
Seiko Instruments
SOT-89-5
Linear voltage regulator IC
LDO, 4.8V±1%, 300mA, +CE
QMI
S-1132B49-I6T2G
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, 4.9V±1.0%, 300mA, +CE
QMI
S-1132B49-M5T1G
Seiko Instruments
SOT-23-5
Linear voltage regulator IC
LDO, 4.9V±1.0%, 300mA, +CE
QMI
S-1132B49-U5T1G
Seiko Instruments
SOT-89-5
Linear voltage regulator IC
LDO, 4.9V±1%, 300mA, +CE
QMJ
S-1132B50-I6T2G
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, 5.0V±1.0%, 300mA, +CE
QMJ
S-1132B50-M5T1G
Seiko Instruments
SOT-23-5
Linear voltage regulator IC
LDO, 5.0V±1.0%, 300mA, +CE
QMJ
S-1132B50-U5T1G
Seiko Instruments
SOT-89-5
Linear voltage regulator IC
LDO, 5.0V±1%, 300mA, +CE
QMK
S-1132B51-I6T2G
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, 5.1V±1.0%, 300mA, +CE
QMK
S-1132B51-M5T1G
Seiko Instruments
SOT-23-5
Linear voltage regulator IC
LDO, 5.1V±1.0%, 300mA, +CE
QMK
S-1132B51-U5T1G
Seiko Instruments
SOT-89-5
Linear voltage regulator IC
LDO, 5.1V±1%, 300mA, +CE
QML
S-1132B52-I6T2G
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, 5.2V±1.0%, 300mA, +CE
QML
S-1132B52-M5T1G
Seiko Instruments
SOT-23-5
Linear voltage regulator IC
LDO, 5.2V±1.0%, 300mA, +CE
QML
S-1132B52-U5T1G
Seiko Instruments
SOT-89-5
Linear voltage regulator IC
LDO, 5.2V±1%, 300mA, +CE
QMM
S-1132B53-I6T2G
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, 5.3V±1.0%, 300mA, +CE
QMM
S-1132B53-M5T1G
Seiko Instruments
SOT-23-5
Linear voltage regulator IC
LDO, 5.3V±1.0%, 300mA, +CE
QMM
S-1132B53-U5T1G
Seiko Instruments
SOT-89-5
Linear voltage regulator IC
LDO, 5.3V±1%, 300mA, +CE
QMN
S-1132B54-I6T2G
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, 5.4V±1.0%, 300mA, +CE
QMN
S-1132B54-M5T1G
Seiko Instruments
SOT-23-5
Linear voltage regulator IC
LDO, 5.4V±1.0%, 300mA, +CE
QMN
S-1132B54-U5T1G
Seiko Instruments
SOT-89-5
Linear voltage regulator IC
LDO, 5.4V±1%, 300mA, +CE
QMO
S-1132B55-I6T2G
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, 5.5V±1.0%, 300mA, +CE
QMO
S-1132B55-M5T1G
Seiko Instruments
SOT-23-5
Linear voltage regulator IC
LDO, 5.5V±1.0%, 300mA, +CE
QMO
S-1132B55-U5T1G
Seiko Instruments
SOT-89-5
Linear voltage regulator IC
LDO, 5.5V±1%, 300mA, +CE
QMY
FM803MP3X
Fairchild Semiconductor
SC-70
Voltage detector IC
4.38V±1.5%, -Reset ODO