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 'QK'

Marking
Name
Manufacturer/Case
Function
QK
1SMA6.5A
ON Semiconductor
403B-01
Transient voltage supressor
Vrwm=6.5V±5%, 35.7A, 400W (1ms)
QK
2SC2954
NEC Electronics
SOT-89
NPN transistor
VHF/UHF-Mix, 35V, 150mA, 2W, B=30..200, 4GHz
QK
AP160-25Y
Anachip
SOT-89
Linear voltage regulator IC
LDO, 2.5V±1.5%, 600mA
QK
APX810S00-23SA-7
Diodes
SOT-23
Voltage detector IC
2.25V±1.5%, +Reset PPO, 1.7ms Rt delay
QK
BD5329FVE
Rohm
VSOF-5
Voltage detector IC
2.9V±1%, -Reset PPO
QK
BD5329G
Rohm
SSOP-5
Voltage detector IC
2.9V±1%, -Reset PPO
Qk
BD53E37G-M
Rohm
SSOP-5
Voltage detector IC
3.7V±1%, -Reset PPO
QK
EC76SMBJ400A
E-CMOS
DO-214AA
Transient voltage supressor
Vbr=447..494V, Vrwm=400V, Ipp=0.9A, 600W(1ms)
QK
MCP100T-300I
Microchip Technology
SOT-23
Voltage detector IC
3.0V+75mV, -Reset PPO
QK
P6SMB22CA
Fagor Electronica
DO-214AA
Transient voltage supressor
Vrwm=22V, Vbr=20.9..23.1V, 19.6A, 600W(1ms), Bidirectional
QK
PT7M7049CHTA
Pericom Technology
SOT-23-5
Voltage detector IC
4.9V±1.5%, +Reset PPO
QK
PT7M7049CHTAE
Pericom Technology
SOT-23-5
Voltage detector IC
4.9V±1.5%, +Reset PPO, Lead free
QK
R1114Q391B
Ricoh
SC-82AB
Linear voltage regulator IC
LDO, Low noise, 3.9V±2%, 150mA,
QK
R1118K381D
Ricoh
DFN1612-4B
Linear voltage regulator IC
3.8V±1%, 150mA, +CE, CL
QK
R3111N511B
Ricoh
SOT-23-5
Voltage detector IC
5.1V±2%, +Reset ODO
QK
RP152L010A
Ricoh
DFN1212-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=3.0V/1.8V±1%, 150mA, +CE
QK
SMBJ300A
Leimao Electronic Technology
DO-214AA
Transient voltage supressor
Vbr=335..371V, Vrwm=300V, Ipp=1.3A, 600W(1ms)
QK
SMBJ300A
Starsea Electronic
DO-214AA
Transient voltage supressor
Vbr=335..371V, Vrwm=300V, Ipp=1.3A, 600W(1ms)
QK
SMBJ300A-T
INPAQ Technology
DO-214AA
Transient voltage supressor
Vbr=335..371V, Vrwm=300V, Ipp=1.3A, 600W(1ms)
QK
SMBJ400A
Yint Electronics
DO-214AA
Transient voltage supressor
Vbr=447..494V, Vrwm=400V, Ipp=0.9A, 600W(1ms)
QK
SMBJ400A
Socay Electronics
DO-214AA
Transient voltage supressor
Vrwm=400.0V, Vbr=447.0..494.0V, Ipp=0.93A, 600W(1ms)
QK
SMBJ400A
Bourns
DO-214AA
Transient voltage supressor
Vbr=447..494V, Vrwm=400V, Ipp=0.9A, 600W(1ms)
QK
SMBJ400A
Ruilong Yuan Electronics
DO-214AA
Transient voltage supressor
Vbr=447..494V, Vrwm=400V, Ipp=0.9A, 600W(1ms)
QK
SMBJ400A
StarHope
DO-214AA
Transient voltage supressor
Vbr=447..494V, Vrwm=400V, Ipp=0.9A, 600W(1ms)
QK
SMBJ400A
Lucky Forest
DO-214AA
Transient voltage supressor
Vbr=447..494V, Vrwm=400V, Ipp=0.9A, 600W(1ms)
QK
TV06B401J-G
Comchip Technology
DO-214AA
Transient voltage supressor
Vrwm=400.0V, Vbr=447.0..494.0V, Ipp=0.93A, 600W(1ms)
QK6
SMA6J300A
Sunmate Semiconductor
DO-214AC
Transient voltage supressor
Vrwm=300V, Vbr=333..371.0V, Ipp=1.2A, 600W(1ms)
QKA
TPSMBJ400A-VR
Littelfuse
DO-214AA
Transient voltage supressor
Vrwm=400.0V, Vbr=447.0..494.0V, Ipp=0.9A, 600W(1ms)