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 'Q4'

Marking
Name
Manufacturer/Case
Function
Q4
2SC1321-4
NEC Electronics
SOT-23
NPN transistor
UHF, 30V, 10mA, 100mW, B=90..180, 900MHz
Q4
2SC2813-4
Sanyo Electric
CP
NPN transistor
RF, GP, 25V, 30mA, 150mW, B=90..180, 600MHz
Q4
APX809S00-23SA-7
Diodes
SOT-23
Voltage detector IC
2.25V±1.5%, -Reset PPO, 1.7ms Rt delay
Q4
BZD27C91P-M
Vishay Semiconductor
DO-219AB
Zener diode
85..96V, Zzt=60, Izt=5mA, 800mW, halogen-free
Q4
ELM7644HBB
ELM Technology
SOT-23
Voltage detector IC
4.4V±2%, +Reset PPO, 500ms
Q4
FS5G
Fagor Electronica
DO-214AB
Diode
Rectifier, 400V, 5A, Vf<1.15V(5A), 60pF
Q4
KA4F3P
NEC Electronics
SOT-416
NPN transistor
Sw, 60V, 100mA, 200mW, R1/R2=2k2/10k
Q4
KTC601F-Y
Korea Electronics
TFSV
NPN transistor
Dual GP, 50V, 150mA, 100mW, B=120..240, 80MHz
Q4
R3130N30AA8
Ricoh
SOT-23
Voltage detector IC
3V±1.5%, -Reset PPO, 50ms
Q4
R5210N002C
Ricoh
SOT-23-6W
DC/DC voltage converter IC
PWM step-down, Vr=3.3V, DC/DCout=2.5V, Vdet= 4V
Q4
RP114K121D
Ricoh
DFN1010-4
Linear voltage regulator IC
LDO, 1.2V±1%, 300mA, +CE, CL
Q4
SP809EK-2-9
Sipex
SOT-23
Voltage detector IC
2.9V±1.5%, -Reset PPO
Q40
GS810CJEUD
Vishay Semiconductor
SOT-23
Voltage detector IC
4.0V±1.5%, +Reset PPO, 30ms
Q40
KIC77B40M2
Korea Electronics
TSM
Voltage detector IC
4.0V±1%, -Reset ODO, Td=50ms
Q40
KIC77B40T2
Korea Electronics
SOT-23
Voltage detector IC
4.0V±1%, -Reset ODO, Td=50ms
Q40
TK11340M
Toko America
SOT-23L-6
Linear voltage regulator IC
LDO, 4.0V±5%, 170mA, -CE
Q40
TK11340U
Toko America
SOT-89-5
Linear voltage regulator IC
LDO, 4.0V±5%, 170mA, -CE
Q40B
RP132S401B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.0V±1%, 1A, +CE
Q40D
RP132S401D
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.0V±1%, 1A, +CE, CL
Q40E
RP132S401E
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.0V±1%, 1A, +CE
Q40F
RP132S401F
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.0V±1%, 1A, +CE, CL
Q41
KIC77B41M2
Korea Electronics
TSM
Voltage detector IC
4.1V±1%, -Reset ODO, Td=50ms
Q41
KIC77B41T2
Korea Electronics
SOT-23
Voltage detector IC
4.1V±1%, -Reset ODO, Td=50ms
Q41B
RP132S411B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.1V±1%, 1A, +CE
Q41D
RP132S411D
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.1V±1%, 1A, +CE, CL
Q41E
RP132S411E
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.1V±1%, 1A, +CE
Q41F
RP132S411F
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.1V±1%, 1A, +CE, CL
Q42
KIC77B42M2
Korea Electronics
TSM
Voltage detector IC
4.2V±1%, -Reset ODO, Td=50ms
Q42
KIC77B42T2
Korea Electronics
SOT-23
Voltage detector IC
4.2V±1%, -Reset ODO, Td=50ms
Q42B
RP132S421B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.2V±1%, 1A, +CE
Q42D
RP132S421D
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.2V±1%, 1A, +CE, CL
Q42E
RP132S421E
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.2V±1%, 1A, +CE
Q42F
RP132S421F
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.2V±1%, 1A, +CE, CL
Q43
GS810CMEUD
Vishay Semiconductor
SOT-23
Voltage detector IC
4.38V±1.5%, +Reset PPO, 30ms
Q43
KIC77B43M2
Korea Electronics
TSM
Voltage detector IC
4.3V±1%, -Reset ODO, Td=50ms
Q43
KIC77B43T2
Korea Electronics
SOT-23
Voltage detector IC
4.3V±1%, -Reset ODO, Td=50ms
Q43B
RP132S431B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.3V±1%, 1A, +CE
Q43D
RP132S431D
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.3V±1%, 1A, +CE, CL
Q43E
RP132S431E
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.3V±1%, 1A, +CE
Q43F
RP132S431F
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.3V±1%, 1A, +CE, CL
Q44
KIC77B44M2
Korea Electronics
TSM
Voltage detector IC
4.4V±1%, -Reset ODO, Td=50ms
Q44
KIC77B44T2
Korea Electronics
SOT-23
Voltage detector IC
4.4V±1%, -Reset ODO, Td=50ms
Q44B
RP132S441B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.4V±1%, 1A, +CE
Q44D
RP132S441D
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.4V±1%, 1A, +CE, CL
Q44E
RP132S441E
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.4V±1%, 1A, +CE
Q44F
RP132S441F
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.4V±1%, 1A, +CE, CL
Q45
KIC77B45M2
Korea Electronics
TSM
Voltage detector IC
4.5V±1%, -Reset ODO, Td=50ms
Q45
KIC77B45T2
Korea Electronics
SOT-23
Voltage detector IC
4.5V±1%, -Reset ODO, Td=50ms
Q45
TK11345M
Toko America
SOT-23L-6
Linear voltage regulator IC
LDO, 4.5V±5%, 170mA, -CE
Q45
TK11345U
Toko America
SOT-89-5
Linear voltage regulator IC
LDO, 4.5V±5%, 170mA, -CE
Q45B
RP132S451B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.5V±1%, 1A, +CE
Q45D
RP132S451D
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.5V±1%, 1A, +CE, CL
Q45E
RP132S451E
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.5V±1%, 1A, +CE
Q45F
RP132S451F
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.5V±1%, 1A, +CE, CL
Q46
GS810CLEUD
Vishay Semiconductor
SOT-23
Voltage detector IC
4.63V±1.5%, +Reset PPO, 30ms
Q46
KIC77B46M2
Korea Electronics
TSM
Voltage detector IC
4.6V±1%, -Reset ODO, Td=50ms
Q46
KIC77B46T2
Korea Electronics
SOT-23
Voltage detector IC
4.6V±1%, -Reset ODO, Td=50ms
Q46B
RP132S461B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.6V±1%, 1A, +CE
Q46D
RP132S461D
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.6V±1%, 1A, +CE, CL
Q46E
RP132S461E
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.6V±1%, 1A, +CE
Q46F
RP132S461F
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.6V±1%, 1A, +CE, CL
Q47
KIC77B47M2
Korea Electronics
TSM
Voltage detector IC
4.7V±1%, -Reset ODO, Td=50ms
Q47
KIC77B47T2
Korea Electronics
SOT-23
Voltage detector IC
4.7V±1%, -Reset ODO, Td=50ms
Q47B
RP132S471B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.7V±1%, 1A, +CE
Q47D
RP132S471D
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.7V±1%, 1A, +CE, CL
Q47E
RP132S471E
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.7V±1%, 1A, +CE
Q47F
RP132S471F
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.7V±1%, 1A, +CE, CL
Q48
KIC77B48M2
Korea Electronics
TSM
Voltage detector IC
4.8V±1%, -Reset ODO, Td=50ms
Q48
KIC77B48T2
Korea Electronics
SOT-23
Voltage detector IC
4.8V±1%, -Reset ODO, Td=50ms
Q48
TK11348M
Toko America
SOT-23L-6
Linear voltage regulator IC
LDO, 4.8V±5%, 170mA, -CE
Q48
TK11348U
Toko America
SOT-89-5
Linear voltage regulator IC
LDO, 4.8V±5%, 170mA, -CE
Q48B
RP132S481B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.8V±1%, 1A, +CE
Q48D
RP132S481D
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.8V±1%, 1A, +CE, CL
Q48E
RP132S481E
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.8V±1%, 1A, +CE
Q48F
RP132S481F
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.8V±1%, 1A, +CE, CL
Q49
KIC77B49M2
Korea Electronics
TSM
Voltage detector IC
4.9V±1%, -Reset ODO, Td=50ms
Q49
KIC77B49T2
Korea Electronics
SOT-23
Voltage detector IC
4.9V±1%, -Reset ODO, Td=50ms
Q49B
RP132S491B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.9V±1%, 1A, +CE
Q49D
RP132S491D
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.9V±1%, 1A, +CE, CL
Q49E
RP132S491E
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.9V±1%, 1A, +CE
Q49F
RP132S491F
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.9V±1%, 1A, +CE, CL
Q4C
KIC77B438M2
Korea Electronics
TSM
Voltage detector IC
4.38V±1%, -Reset ODO, Td=50ms
Q4C
KIC77B438T2
Korea Electronics
SOT-23
Voltage detector IC
4.38V±1%, -Reset ODO, Td=50ms
Q4F
KIC77B463M2
Korea Electronics
TSM
Voltage detector IC
4.63V±1%, -Reset ODO, Td=50ms
Q4F
KIC77B463T2
Korea Electronics
SOT-23
Voltage detector IC
4.63V±1%, -Reset ODO, Td=50ms