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 'QT'

Marking
Name
Manufacturer/Case
Function
QT
1SMA8.5A
ON Semiconductor
403B-01
Transient voltage supressor
Vrwm=8.5V±5%, 29.4A, 400W (1ms)
QT
BD5337FVE
Rohm
VSOF-5
Voltage detector IC
3.7V±1%, -Reset PPO
QT
BD5337G
Rohm
SSOP-5
Voltage detector IC
3.7V±1%, -Reset PPO
QT
CHT4126PT
Chenmko Enterprise
SOT-23
PNP transistor
AF, Sw, 25V, 200mA, B=120..360, 250MHz
QT
MCP809T-315I
Microchip Technology
SOT-23
Voltage detector IC
3.075V±75mV, -Reset PPO
QT
P6SMB33CA
Fagor Electronica
DO-214AA
Transient voltage supressor
Vrwm=33V, Vbr=31.4..34.7V, 131A, 600W(1ms), Bidir.
QT
R1122N171A
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, Low noise, 1.7V±2%, 150mA, -CE
QT
RP152L018A
Ricoh
DFN1212-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=1.8V/1.8V±1%, 150mA, +CE
QT
SM4T12A
SGS-Thomson Microelectronics
SOD-6
Transient voltage supressor
Vrwm=12V, 24A, 400W(1ms)
QT4
2SC4412-4
Sanyo Electric
CP
NPN transistor
CTV-Vid, 300V, 50mA, 250mW, B=100..200, 70MHz
QT5
2SC4412-5
Sanyo Electric
CP
NPN transistor
CTV-Vid, 300V, 50mA, 250mW, B=160..320, 70MHz
QTA
NCP2823AFC
ON Semiconductor
BGA-9
Linear IC
AF PA, BTL, class-D, 2.5..5.5V, 1.5W(5V/8), shutdown
QTA
S-1711E2818-I6T1x
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.8V/1.8V±1.0%, 150mA, -CE, CL, PUR
QTA
S-1711E2818-M6T1x
Seiko Instruments
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.8V/1.8V±1.0%, 150mA, -CE, CL, PUR
QTB
S-1711E3333-M6T1x
Seiko Instruments
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=3.3V/3.3V±1.0%, 150mA, -CE, CL, PUR
QTC
S-1711E1833-M6T1x
Seiko Instruments
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=1.8V/3.3V±1.0%, 150mA, -CE, CL, PUR
QTF
S-1711F2818-I6T1x
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.8V/1.8V±1.0%, 150mA, -CE, CL
QTK
S-1711G2830-I6T1x
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.8V/3.0V±1.0%, 150mA, -CE, PUR
QTP
S-1711H2518-M6T1x
Seiko Instruments
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.5V/1.8V±1.0%, 150mA, -CE
QTY
FM803TP3X
Fairchild Semiconductor
SC-70
Voltage detector IC
3.08V±1.5%, -Reset ODO