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 '2X'

Marking
Name
Manufacturer/Case
Function
2X
2SC3707
Panasonic
SC-59
NPN transistor
UHF, 10V, 10mA, 50mW, B=50..150, 4GHz
2X
2SC4410
Panasonic
SOT-323
NPN transistor
UHF, 10V, 10mA, 50mW, B=50..200, 4GHz
2X
KST4401
Samsung Electronics
SOT-23
NPN transistor
GP, 60V, 600mA, 350mW, B=100..300, >250MHz
2X
MM3Z33
Luguang Electronic Technology
SOD-323FL
Zener diode
31..35V, Izt=5mA, Zzt=80, 300mW
2X
MM3Z33V
EIC Semiconductor
SOD-323FL
Zener diode
31..35V, Izt=2mA, Zzt=80, 200mW
2X
MMBT4401
Vishay Semiconductor
SOT-23
NPN transistor
GP, 60V, 600mA, 225mW, B=100..300, 250MHz
2X
MMBT4401T
Diodes
SOT-523
NPN transistor
GP, 60V, 600mA, 225mW, B=100..300, 250MHz
2X
MMBT4401W
Secos
SOT-323
NPN transistor
GP, 60V, 600mA, 225mW, B=100..300, 250MHz
2X
MMBT4401W
ON Semiconductor
SOT-323
NPN transistor
GP, 60V, 600mA, 225mW, B=100..300, 250MHz
2X
PXT4401
KEXIN Group
SOT-89
NPN transistor
Sw, 60V, 600mA, 1.3W, B=20..30, >250MHz
2X
R1210N421C
Ricoh
SOT-23-5
DC/DC voltage converter IC
PWM step-up, 4.1V, 100kHz
2X
RP173K541A
Ricoh
DFN1010-4
Linear voltage regulator IC
LDO, 5.4V±1%, 150mA, -CE
2X
SO4401
SGS-Thomson Microelectronics
SOT-23
NPN transistor
GP, 60V, 800mA, 200mW, B=100..300, >200MHz
2X
STZ8330

SOD-323
Zener diode
31..35V, Izt=2mA, Zzt=200, 300mW
2X
TMPT4401
Allegro MicroSystems
SOT-23
NPN transistor
GP, 60V, 600mA, 350mW, B=100..300, >25MHz
2X
UNRF1A5
Panasonic
ML3
PNP transistor
Sw, 50V, 80mA, 100mW, 80MHz, R1=10k
2X
XC6127N49CNR
Torex Semiconductor
SSOT-24
Voltage detector IC
4.9V±0.8%, -Reset ODO, -MR, Rt=200ms
2X
XC6221C35B7R
Torex Semiconductor
USPN-4
Linear voltage regulator IC
LDO, 3.55V±1%, 200mA, +CE, PDR
2X
XC6221C35BNR
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 3.55V±1%, 200mA, +CE, PDR
2X
XC6223C3719R-G
Torex Semiconductor
USPQ-4B03
Linear voltage regulator IC
LDO, 3.7V±1%, 300mA, +CE, PDR
2X
XC6229H25B1R-G
Torex Semiconductor
BGA-4
Linear voltage regulator IC
LDO, 2.55V±1%, 300mA, +CE, ICP
2X1
STZ8075C

SOD-323
Zener diode
7.51..7.89V, Izt=5mA, Zzt=20, 300mW
2XG
MMBT4401G-AE3
Unisonic Technologies
SOT-23
NPN transistor
GP, 60V, 600mA, 225mW, B=100..300, 250MHz
2XG
MMBT4401G-AL3
Unisonic Technologies
SOT-323
NPN transistor
GP, 60V, 600mA, 225mW, B=100..300, 250MHz
2XK
MMBT4401K
Fairchild Semiconductor
SOT-23
NPN transistor
GP, 60V, 600mA, 350mW, B=100..300, 250MHz
2XL
MMBT4401L-AE3
Unisonic Technologies
SOT-23
NPN transistor
GP, 60V, 600mA, 225mW, B=100..300, 250MHz
2XL
MMBT4401L-AL3
Unisonic Technologies
SOT-323
NPN transistor
GP, 60V, 600mA, 225mW, B=100..300, 250MHz