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
SOT-23
NPN transistor
VHF Mix, Osc, 30V, 20mA, 100mW, B=60..120, 940MHz
VHF Mix, Osc, 30V, 20mA, 100mW, B=60..120, 940MHz
Qb
BD53E30G-M
Rohm
SSOP-5
SSOP-5
Voltage detector IC
3.0V±1%, -Reset PPO
3.0V±1%, -Reset PPO
QB
KDZ7.5B
Rohm
PMDU
PMDU
Zener diode
7.5V±2.5%, Izt=40mA, 1W
7.5V±2.5%, Izt=40mA, 1W
QB
PT7M7046CHTA
Pericom Technology
SOT-23-5
SOT-23-5
Voltage detector IC
4.6V±1.5%, +Reset PPO
4.6V±1.5%, +Reset PPO
QB
PT7M7046CHTAE
Pericom Technology
SOT-23-5
SOT-23-5
Voltage detector IC
4.6V±1.5%, +Reset PPO, L-Free
4.6V±1.5%, +Reset PPO, L-Free
QB
R1114Q311B
Ricoh
SC-82AB
SC-82AB
Linear voltage regulator IC
LDO, Low noise, 3.1V±2%, 150mA,
LDO, Low noise, 3.1V±2%, 150mA,
QB
R1118K301D
Ricoh
DFN1612-4B
DFN1612-4B
Linear voltage regulator IC
3V±1%, 150mA, +CE, CL
3V±1%, 150mA, +CE, CL
QB
R3111N431B
Ricoh
SOT-23-5
SOT-23-5
Voltage detector IC
4.3V±2%, +Reset ODO
4.3V±2%, +Reset ODO
QB
R5210N010C
Ricoh
SOT-23-6W
SOT-23-6W
DC/DC voltage converter IC
PWM st-dwn, Vr=2.5V, DC/DCout=1.5V, Vdet= 3V
PWM st-dwn, Vr=2.5V, DC/DCout=1.5V, Vdet= 3V
QB
RN1322A
Toshiba
SOT-323
SOT-323
NPN transistor
Mute, 15V, 500mA, 300mW, R1/R2=2.2k/2.2k
Mute, 15V, 500mA, 300mW, R1/R2=2.2k/2.2k
QB
RN1422
Toshiba
SOT-346
SOT-346
NPN transistor
Mute, 50V, 800mA, 300mW, R1/R2=2.2k/2.2k
Mute, 50V, 800mA, 300mW, R1/R2=2.2k/2.2k
QB
RP152L002A
Ricoh
DFN1212-6
DFN1212-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=1.8V/2.8V±1%, 150mA, +CE
LDO, Dual out, Vout1/Vout2=1.8V/2.8V±1%, 150mA, +CE
QB
Si1905DL
Siliconix
SOT-363
SOT-363
MOSFET p-type
Dual, V-MOS, LogL, 8V, ±0.57A, <1.2(0.2A), <62/40ns
Dual, V-MOS, LogL, 8V, ±0.57A, <1.2(0.2A), <62/40ns
QB-
NHDTA114YT
NXP Semiconductors
SOT-23
SOT-23
PNP transistor
Sw, 80V, 100mA, 350mW, R1/R2=10k/47k
Sw, 80V, 100mA, 350mW, R1/R2=10k/47k
QBA
RP114N081D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 0.8V±1%, 300mA, +CE, CL
LDO, 0.8V±1%, 300mA, +CE, CL
QBB
RP114N091D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 0.9V±1%, 300mA, +CE, CL
LDO, 0.9V±1%, 300mA, +CE, CL
QBC
RP114N101D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 1.0V±1%, 300mA, +CE, CL
LDO, 1.0V±1%, 300mA, +CE, CL
QBD
RP114N111D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 1.1V±1%, 300mA, +CE, CL
LDO, 1.1V±1%, 300mA, +CE, CL
QBE
RP114N121D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 1.2V±1%, 300mA, +CE, CL
LDO, 1.2V±1%, 300mA, +CE, CL
QBF
RP114N131D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 1.3V±1%, 300mA, +CE, CL
LDO, 1.3V±1%, 300mA, +CE, CL
QBG
RP114N141D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 1.4V±1%, 300mA, +CE, CL
LDO, 1.4V±1%, 300mA, +CE, CL
QBGF
MIC5321-1.8/1.5YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=1.8V/1.5V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=1.8V/1.5V±2%, 150mA, +CE
QBGG
MIC5321-1.8/1.8YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=1.8V/1.8V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=1.8V/1.8V±2%, 150mA, +CE
QBGW
MIC5321-1.8/1.6YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=1.8V/1.6V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=1.8V/1.6V±2%, 150mA, +CE
QBH
RP114N151D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 1.5V±1%, 300mA, +CE, CL
LDO, 1.5V±1%, 300mA, +CE, CL
QBJ
RP114N161D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 1.6V±1%, 300mA, +CE, CL
LDO, 1.6V±1%, 300mA, +CE, CL
QBJG
MIC5321-2.5/1.8YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.5V/1.8V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=2.5V/1.8V±2%, 150mA, +CE
QBJJ
MIC5321-2.5/2.5YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.5V/2.5V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=2.5V/2.5V±2%, 150mA, +CE
QBK
RP114N171D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 1.7V±1%, 300mA, +CE, CL
LDO, 1.7V±1%, 300mA, +CE, CL
QBKD
MIC5321-2.6/1.85YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.6V/1.85±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=2.6V/1.85±2%, 150mA, +CE
QBKG
MIC5321-2.6/1.8YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.6V/1.8V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=2.6V/1.8V±2%, 150mA, +CE
QBL
RP114N181D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 1.8V±1%, 300mA, +CE, CL
LDO, 1.8V±1%, 300mA, +CE, CL
QBLL
MIC5321-2.7/2.7YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.7V/2.7V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=2.7V/2.7V±2%, 150mA, +CE
QBM
RP114N191D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 1.9V±1%, 300mA, +CE, CL
LDO, 1.9V±1%, 300mA, +CE, CL
QBMF
MIC5321-2.8/1.5YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.8V/1.5V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=2.8V/1.5V±2%, 150mA, +CE
QBMG
MIC5321-2.8/1.8YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.8V/1.8V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=2.8V/1.8V±2%, 150mA, +CE
QBMK
MIC5321-2.8/2.6YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.8V/2.6V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=2.8V/2.6V±2%, 150mA, +CE
QBMM
MIC5321-2.8/2.8YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.8V/2.8V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=2.8V/2.8V±2%, 150mA, +CE
QBN
RP114N201D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 2.0V±1%, 300mA, +CE, CL
LDO, 2.0V±1%, 300mA, +CE, CL
QBND
MIC5321-2.85/1.85YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.85V/1.85V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=2.85V/1.85V±2%, 150mA, +CE
QBNK
MIC5321-2.85/2.6YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.85V/2.6V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=2.85V/2.6V±2%, 150mA, +CE
QBNN
MIC5321-2.85/2.85YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.85V/2.85V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=2.85V/2.85V±2%, 150mA, +CE
QBOF
MIC5321-2.9/1.5YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.9V/1.5V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=2.9V/1.5V±2%, 150mA, +CE
QBOG
MIC5321-2.9/1.8YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.9V/1.8V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=2.9V/1.8V±2%, 150mA, +CE
QBOO
MIC5321-2.9/2.9YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=2.9V/2.9V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=2.9V/2.9V±2%, 150mA, +CE
QBp
NHDTA114YT
NXP Semiconductors
SOT-23
SOT-23
PNP transistor
Sw, 80V, 100mA, 350mW, R1/R2=10k/47k
Sw, 80V, 100mA, 350mW, R1/R2=10k/47k
QBP
RP114N211D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 2.1V±1%, 300mA, +CE, CL
LDO, 2.1V±1%, 300mA, +CE, CL
QBPG
MIC5321-3.0/1.8YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.0V/1.8V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.0V/1.8V±2%, 150mA, +CE
QBPJ
MIC5321-3.0/2.5YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.0V/2.5V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.0V/2.5V±2%, 150mA, +CE
QBPK
MIC5321-3.0/2.6YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.0V/2.6V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.0V/2.6V±2%, 150mA, +CE
QBPM
MIC5321-3.0/2.8YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.0V/2.8V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.0V/2.8V±2%, 150mA, +CE
QBPN
MIC5321-3.0/2.85YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.0V/2.85V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.0V/2.85V±2%, 150mA, +CE
QBPP
MIC5321-3.0/3.0YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.0V/3.0V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.0V/3.0V±2%, 150mA, +CE
QBQ
RP114N221D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 2.2V±1%, 300mA, +CE, CL
LDO, 2.2V±1%, 300mA, +CE, CL
QBR
RP114N231D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 2.3V±1%, 300mA, +CE, CL
LDO, 2.3V±1%, 300mA, +CE, CL
QBS
RP114N241D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 2.4V±1%, 300mA, +CE, CL
LDO, 2.4V±1%, 300mA, +CE, CL
QBSF
MIC5321-3.3/1.5YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/1.5V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.3V/1.5V±2%, 150mA, +CE
QBSG
MIC5321-3.3/1.8YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/1.8V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.3V/1.8V±2%, 150mA, +CE
QBSJ
MIC5321-3.3/2.5YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/2.5V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.3V/2.5V±2%, 150mA, +CE
QBSK
MIC5321-3.3/2.6YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/2.6V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.3V/2.6V±2%, 150mA, +CE
QBSL
MIC5321-3.3/2.7YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/2.7V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.3V/2.7V±2%, 150mA, +CE
QBSM
MIC5321-3.3/2.8YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/2.8V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.3V/2.8V±2%, 150mA, +CE
QBSN
MIC5321-3.3/2.85YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/2.85V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.3V/2.85V±2%, 150mA, +CE
QBSO
MIC5321-3.3/2.9YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/2.9V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.3V/2.9V±2%, 150mA, +CE
QBSP
MIC5321-3.3/3.0YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/3.0V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.3V/3.0V±2%, 150mA, +CE
QBSR
MIC5321-3.3/3.2YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/3.2V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.3V/3.2V±2%, 150mA, +CE
QBSS
MIC5321-3.3/3.3YD6
Micrel
TSOT-23-6
TSOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vo1/Vo2=3.3V/3.3V±2%, 150mA, +CE
LDO, Dual out, Vo1/Vo2=3.3V/3.3V±2%, 150mA, +CE
QBt
NHDTA114YT
NXP Semiconductors
SOT-23
SOT-23
PNP transistor
Sw, 80V, 100mA, 350mW, R1/R2=10k/47k
Sw, 80V, 100mA, 350mW, R1/R2=10k/47k
QBT
RP114N251D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 2.5V±1%, 300mA, +CE, CL
LDO, 2.5V±1%, 300mA, +CE, CL
QBU
RP114N261D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 2.6V±1%, 300mA, +CE, CL
LDO, 2.6V±1%, 300mA, +CE, CL
QBV
RP114N271D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 2.7V±1%, 300mA, +CE, CL
LDO, 2.7V±1%, 300mA, +CE, CL
QBW
NHDTA114YT
NXP Semiconductors
SOT-23
SOT-23
PNP transistor
Sw, 80V, 100mA, 350mW, R1/R2=10k/47k
Sw, 80V, 100mA, 350mW, R1/R2=10k/47k
QBW
RP114N281D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 2.8V±1%, 300mA, +CE, CL
LDO, 2.8V±1%, 300mA, +CE, CL
QBX
RP114N291D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 2.9V±1%, 300mA, +CE, CL
LDO, 2.9V±1%, 300mA, +CE, CL
QBY
RP114N301D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 3.0V±1%, 300mA, +CE, CL
LDO, 3.0V±1%, 300mA, +CE, CL
QBZ
RP114N311D
Ricoh
SOT-23-5
SOT-23-5
Linear voltage regulator IC
LDO, 3.1V±1%, 300mA, +CE, CL
LDO, 3.1V±1%, 300mA, +CE, CL