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 'QB'

Marking
Name
Manufacturer/Case
Function
QB
2SC2620-B
Renessas
SOT-23
NPN transistor
VHF Mix, Osc, 30V, 20mA, 100mW, B=60..120, 940MHz
Qb
BD53E30G-M
Rohm
SSOP-5
Voltage detector IC
3.0V±1%, -Reset PPO
QB
KDZ7.5B
Rohm
PMDU
Zener diode
7.5V±2.5%, 40mA, 1W
QB
PT7M7046CHTA

SOT-23-5
Voltage detector IC
4.6V±1.5%, +Reset PPO
QB
PT7M7046CHTAE

SOT-23-5
Voltage detector IC
4.6V±1.5%, +Reset PPO, Lead free
QB
R1114Q311B
Ricoh
SC-82AB
Linear voltage regulator IC
LDO, Low noise, 3.1V±2%, 150mA, +CE
QB
R1118K301D
Ricoh
DFN1612-4B
Linear voltage regulator IC
3V±1%, 150mA, +CE, CL
QB
R5210N010C
Ricoh
SOT-23-6W
DC/DC voltage converter IC
PWM step-down, Vr=2.5V, DC/DCout=1.5V, Vdet= 3V
QB
RN1322A
Toshiba
SOT-323
NPN transistor
Mute, 15V, 500mA, 300mW, R1/R2=2k2/2k2
QB
RN1422
Toshiba
SOT-346
NPN transistor
Mute, 50V, 800mA, 300mW, R1/R2=2.2k/2.2k
QB
RP152L002A
Ricoh
DFN1212-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=1.8V/2.8V±1%, 150mA, +CE
QB
Si1905DL
Siliconix
SOT-363
MOSFET p-type
Dual, V-MOS, LogL, 8V, ±0.57A, <1.2(0.2A), <62/40ns
QBA
RP114N081D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 0.8V±1%, 300mA, +CE, CL
QBB
RP114N091D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 0.9V±1%, 300mA, +CE, CL
QBC
RP114N101D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.0V±1%, 300mA, +CE, CL
QBD
RP114N111D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.1V±1%, 300mA, +CE, CL
QBE
RP114N121D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.2V±1%, 300mA, +CE, CL
QBF
RP114N131D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.3V±1%, 300mA, +CE, CL
QBG
RP114N141D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.4V±1%, 300mA, +CE, CL
QBGF
MIC5321-1.8/1.5YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=1.8V/1.5V±2%, 150mA, +CE
QBGG
MIC5321-1.8/1.8YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=1.8V/1.8V±2%, 150mA, +CE
QBGW
MIC5321-1.8/1.6YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=1.8V/1.6V±2%, 150mA, +CE
QBH
RP114N151D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.5V±1%, 300mA, +CE, CL
QBJ
RP114N161D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.6V±1%, 300mA, +CE, CL
QBJG
MIC5321-2.5/1.8YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.5V/1.8V±2%, 150mA, +CE
QBJJ
MIC5321-2.5/2.5YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.5V/2.5V±2%, 150mA, +CE
QBK
RP114N171D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.7V±1%, 300mA, +CE, CL
QBKD
MIC5321-2.6/1.85YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.6V/1.85±2%, 150mA, +CE
QBKG
MIC5321-2.6/1.8YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.6V/1.8V±2%, 150mA, +CE
QBL
RP114N181D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.8V±1%, 300mA, +CE, CL
QBLL
MIC5321-2.7/2.7YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.7V/2.7V±2%, 150mA, +CE
QBM
RP114N191D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.9V±1%, 300mA, +CE, CL
QBMF
MIC5321-2.8/1.5YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.8V/1.5V±2%, 150mA, +CE
QBMG
MIC5321-2.8/1.8YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.8V/1.8V±2%, 150mA, +CE
QBMK
MIC5321-2.8/2.6YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.8V/2.6V±2%, 150mA, +CE
QBMM
MIC5321-2.8/2.8YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.8V/2.8V±2%, 150mA, +CE
QBN
RP114N201D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 2.0V±1%, 300mA, +CE, CL
QBND
MIC5321-2.85/1.85YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.85V/1.85V±2%, 150mA, +CE
QBNK
MIC5321-2.85/2.6YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.85V/2.6V±2%, 150mA, +CE
QBNN
MIC5321-2.85/2.85YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.85V/2.85V±2%, 150mA, +CE
QBOF
MIC5321-2.9/1.5YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.9V/1.5V±2%, 150mA, +CE
QBOG
MIC5321-2.9/1.8YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.9V/1.8V±2%, 150mA, +CE
QBOO
MIC5321-2.9/2.9YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.9V/2.9V±2%, 150mA, +CE
QBP
RP114N211D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 2.1V±1%, 300mA, +CE, CL
QBPG
MIC5321-3.0/1.8YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.0V/1.8V±2%, 150mA, +CE
QBPJ
MIC5321-3.0/2.5YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.0V/2.5V±2%, 150mA, +CE
QBPK
MIC5321-3.0/2.6YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.0V/2.6V±2%, 150mA, +CE
QBPM
MIC5321-3.0/2.8YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.0V/2.8V±2%, 150mA, +CE
QBPN
MIC5321-3.0/2.85YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.0V/2.85V±2%, 150mA, +CE
QBPP
MIC5321-3.0/3.0YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.0V/3.0V±2%, 150mA, +CE
QBQ
RP114N221D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 2.2V±1%, 300mA, +CE, CL
QBR
RP114N231D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 2.3V±1%, 300mA, +CE, CL
QBS
RP114N241D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 2.4V±1%, 300mA, +CE, CL
QBSF
MIC5321-3.3/1.5YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/1.5V±2%, 150mA, +CE
QBSG
MIC5321-3.3/1.8YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/1.8V±2%, 150mA, +CE
QBSJ
MIC5321-3.3/2.5YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/2.5V±2%, 150mA, +CE
QBSK
MIC5321-3.3/2.6YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/2.6V±2%, 150mA, +CE
QBSL
MIC5321-3.3/2.7YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/2.7V±2%, 150mA, +CE
QBSM
MIC5321-3.3/2.8YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/2.8V±2%, 150mA, +CE
QBSN
MIC5321-3.3/2.85YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/2.85V±2%, 150mA, +CE
QBSO
MIC5321-3.3/2.9YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/2.9V±2%, 150mA, +CE
QBSP
MIC5321-3.3/3.0YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/3.0V±2%, 150mA, +CE
QBSR
MIC5321-3.3/3.2YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/3.2V±2%, 150mA, +CE
QBSS
MIC5321-3.3/3.3YD6
Micrel
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/3.3V±2%, 150mA, +CE
QBT
RP114N251D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 2.5V±1%, 300mA, +CE, CL
QBU
RP114N261D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 2.6V±1%, 300mA, +CE, CL
QBV
RP114N271D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 2.7V±1%, 300mA, +CE, CL
QBW
RP114N281D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 2.8V±1%, 300mA, +CE, CL
QBX
RP114N291D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 2.9V±1%, 300mA, +CE, CL
QBY
RP114N301D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 3.0V±1%, 300mA, +CE, CL
QBZ
RP114N311D
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 3.1V±1%, 300mA, +CE, CL