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 'MQ'

Marking
Name
Manufacturer/Case
Function
MQ
ASM161SEUSF
PulseCore Semiconductor
SOT-143
Voltage detector IC
2.93V±2%, -MR, -Reset ODO, Lead-free
MQ
AX6607A-25Z6
AXElite Technology
TDFN-6L
Linear voltage regulator IC
LDO, 2.5V±2%, 600mA, +CE
MQ
BD5234FVE
Rohm
VSOF-5
Voltage detector IC
3.4V±1%, -Reset ODO
MQ
BD5234G
Rohm
SSOP-5
Voltage detector IC
3.4V±1%, -Reset ODO
MQ
EC76SMBJ40
E-CMOS
DO-214AA
Transient voltage supressor
Vbr=44.4..54.3V, Vrwm=40V, Ipp=8.4A, 600W(1ms)
MQ
HR1F3P
NEC Electronics
SOT-89
PNP transistor
Sw, 80V, 1A, 2W, R1/R2=2k2/10k
MQ
KRC281U
Korea Electronics
SOT-323
NPN transistor
Sw, 50V, 300mA, 900mW, 300MHz, B=350..1200, R1=2.2k
MQ
MAX8841ELT15+T
Maxim Integrated Products
DFN-6
Linear voltage regulator IC
LDO, 1.5V±2%, 150mA, +CE
MQ
P6SMB75
Fagor Electronica
DO-214AA
Transient voltage supressor
Vrwm=75V, Vbr=71.3..78.8V, 5.8A, 600W(1ms)
MQ
P6SMBJ40
PanJIT Semiconductor
DO-214AA
Transient voltage supressor
Vrwm=40V, Vbr=44.4..51.1V, 8.4A, 600W(1ms)
mq
PT7M6243CHC3E
Pericom Technology
SC-70
Voltage detector IC
4.3V±1.5%,+Reset PPO
mq
PT7M6243CHC3E
Pericom Technology
SC-70
Voltage detector IC
4.3V±1.5%,+Reset PPO, Lead free
mq
PT7M6243CHC4
Pericom Technology
SOT-23-5
Voltage detector IC
4.3V±1.5%, +Reset PPO
mq
PT7M6243CHC4
Pericom Technology
SC-70-4
Voltage detector IC
4.3V±1.5%, +Reset PPO
mq
PT7M6243CHC4E
Pericom Technology
SOT-23-5
Voltage detector IC
4.3V±1.5%, +Reset PPO, Lead free
mq
PT7M6243CHC4E
Pericom Technology
SC-70-4
Voltage detector IC
4.3V±1.5%, +Reset PPO, Lead free
mq
PT7M6243CHTA3E
Pericom Technology
SOT-23
Voltage detector IC
4.3V±1.5%,+Reset PPO, Lead free
mq
PT7M6243CHTA3E
Pericom Technology
SOT-23
Voltage detector IC
4.3V±1.5%,+Reset PPO
mQ
PT7M7824KTA
Pericom Technology
SOT-23-5
Voltage detector IC
2.25V±1.5%, ±Reset PPO, WD
mQ
PT7M7824KTAE
Pericom Technology
SOT-23-5
Voltage detector IC
2.25V±1.5%, ±Reset PPO, WD, Lead free
MQ
PZS117V5BES
PanJIT Semiconductor
SOD-523
Zener diode
7.13..7.88V, Izt=0.05mA, 150mW
MQ
R1118K201B
Ricoh
DFN1612-4B
Linear voltage regulator IC
2V±1%, 150mA, +CE
MQ
R1122N341A
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, Low noise, 3.4V±2%, 150mA, -CE
MQ
SM6T30C
SGS-Thomson Microelectronics
DO-214AA
Transient voltage supressor
Vrwm=25.6V, Vbr=28.5..31.5V, 14.5A, 600W(1ms), Bidirectional
MQ
SMBG40
Vishay Semiconductor
DO-215AA
Transient voltage supressor
Vrwm=40V, Vbr=44.4..56.3V, 8.4A, 600W(1ms)
MQ
SMBJ40
Vishay Semiconductor
DO-214AA
Transient voltage supressor
Vrwm=40V, Vbr=44.4..56.3V, 8.4A, 600W(1ms)
MQ
SMBJ40
Socay Electronics
DO-214AA
Transient voltage supressor
Vrwm=40.0V, Vbr=44.40..54.30V, Ipp=8.40A, 600W(1ms)
MQ
SMBJ40
Taiwan Semiconductor Company
DO-214AA
Transient voltage supressor
Vrwm=40.0V, Vbr=44.40..54.30V, Ipp=8.40A, 600W(1ms)
MQ
TV06B400K-G
Comchip Technology
DO-214AA
Transient voltage supressor
Vrwm=40.0V, Vbr=44.40..54.30V, Ipp=8.40A, 600W(1ms)
MQ6
SMA6J40
Sunmate Semiconductor
DO-214AC
Transient voltage supressor
Vrwm=40V, Vbr=44 4..56.3V, Ipp=8 4A, 600W(1ms)
MQ=
RT9818C-41GVL
Richtek Technology
SOT-23
Voltage detector IC
4.1V±1.5%, -Reset ODO, Td=220ms
MQA
KRC281SA
Korea Electronics
SOT-23
NPN transistor
Sw, 50V, 300mA, 900mW, 300MHz, B=200..700, R1=2.2k
MQB
KRC281SB
Korea Electronics
SOT-23
NPN transistor
Sw, 50V, 300mA, 900mW, 300MHz, B=350..1200, R1=2.2k
MQB
KRC681T
Korea Electronics
TSV
NPN transistor
Dual, Sw, AF-mute, 50V, 300mA, 900mW, R1=2.2k
MQB
KRC881T
Korea Electronics
TS6
NPN transistor
Dual, Sw, 20V, 300mA, 900mW, R1=2.2k
MQJ
P6SMB75
Taiwan Semiconductor Company
DO-214AA
Transient voltage supressor
Vrwm=75V, Vbr=71.3..78.8V, 5.8A, 600W(1ms)
MQK
SMB75
Luguang Electronic Technology
DO-214AA
Transient voltage supressor
Vbr=67.5..82.5V, Vrwm=60.7V, 5.56A, 600W(1ms)
MQM
SMB75C
Luguang Electronic Technology
DO-214AA
Transient voltage supressor
Vbr=67.5..82.5V, Vrwm=60.7V, 5.56A, 600W(1ms), Bidirectional