The ultimate SMD marking codes database

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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, Rdt=1.7ms
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
ELM7320NBC2A
ELM Technology
SC-70-5
Voltage detector IC
2.0V±30mV, -Reset ODO, -MR
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), Bidir.
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, L-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
Lucky Forest
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
Yint Electronics
DO-214AA
Transient voltage supressor
Vbr=447..494V, Vrwm=400V, Ipp=0.9A, 600W(1ms)
QK
SMBS400A
Formosa Microsemi
SMB-S
Transient voltage supressor
Vrwm=400V, Vbr=447..494V, 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
P6SMAFJ300A
Sunmate Semiconductor
SMA-F
Transient voltage supressor
Vrwm=300V, Vbr=333..371.0V, Ipp=1.2A, 600W
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)
QKH
SMBJ400A-H
Yint Electronics
DO-214AA
Transient voltage supressor
Vbr=447..494V, Vrwm=400V, Ipp=0.9A, 600W(1ms)
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