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 'X1'

Marking
Name
Manufacturer/Case
Function
X1
2SK852-X1
NEC Electronics
SOT-323
FET n-type
GP, 50V, 10mA, 150mW, Idss=0.5..3mA, Up<1.5V
X1
2SK94-1
NEC Electronics
SOT-23
FET n-type
GP, 50V, 20mA, 150mW, Idss=0.5..1.5mA, Up<1.5V
X1
BD46412G
Rohm
SSOP-5
Voltage detector IC
4.1V±1%, -MR, -Reset PPO, 200ms
X1
BFT93
Siemens
SOT-23
PNP transistor
UHF-A, 15V, 35mA, 5GHz
X1
BZF10C3V3
Diodesemi Technology
SOD-123F
Zener diode
3.1..3.5V, Izt=76mA, Zzt=10, 1W
X1
BZT52C51-V
Vishay Semiconductor
SOD-123
Zener diode
51V±5%, Izt=5mA, Zzt=70, 500mW
X1
BZV49-C27
Zetex
SOT-89
Zener diode
27V±5%, Izt=2mA, 1W
X1
BZX384C51-F
TAITRON Components
SOD-323F
Zener diode
48.0..54.0V, Izt=2.0mA, 200mW
X1
BZX384C51-V
Vishay Semiconductor
SOD-323
Zener diode
51V±5%, Izt=2mA, Zzt=60, 200mW
X1
BZX88-C27
Ferranti Semiconductors
SOT-23
Zener diode
27V±5%, Iz=5mA, 200mW
X1
CHS04XPT
Chenmko Enterprise
SOT-89
Diode
SBD, 40V, 1A, Vf<0.55V(1A)
X1
CMDZ5221B
Central Semiconductor
SOD-323
Zener diode
2.4V±5%, 20mA, Zzt=30, 250mW
X1
ELM7551CAB
ELM Technology
SOT-89
Voltage detector IC
5.1V±2%, +Reset PPO
X1
ELM7551CBB
ELM Technology
SOT-23
Voltage detector IC
5.1V±2%, +Reset PPO
X1
ELM7551NAB
ELM Technology
SOT-89
Voltage detector IC
5.1V±2%, +Reset ODO
X1
ELM7551NBB
ELM Technology
SOT-23
Voltage detector IC
5.1V±2%, +Reset ODO
X1
IMX1
Rohm
SOT-363
NPN transistor
Dual, 60V, 150mA, 180MHz
X1
MFPZ4728A
TAITRON Components
SOD-123F
Zener diode
3.1..3.5V, Izt=76.0mA, 1W
X1
MM3Z5237B
Bytesonic
SOD-323FL
Zener diode
8.2V±5%, Izt=20mA, Zzt=8, 200mW
X1
MM3Z5237BH
Zowie Technology
SOD-323
Zener diode
7.79..8.61V, Izt=20mA, Zzt=8, 300mW
X1
MMSZ16T
Motorola
SOD-123
Zener diode
16V±5%, Izt=5mA, Zzt=40, 500mW
X1
PZU16B1A
Philips
SOD-323
Zener diode
16V±2%, If=200mA, 320mW
X1
R1163D211D
Ricoh
SON-6
Linear voltage regulator IC
LDO, 2.1V±1.5%, 150mA, +CE, CL, AE(mode)
X1
R3111Q411C
Ricoh
SC-82AB
Voltage detector IC
4.1V±2%, -Reset ODO
X1
RP103Q161D
Ricoh
SC-82AB
Linear voltage regulator IC
LDO, 1.6V±1%, 150mA, +CE, CL
X1
TC1272-10ENB
Microchip Technology
SOT-23
Voltage detector IC
4.37V±1%, -Reset PPO
X1
XC6225B282NR-G
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 2.8V±2%, 30mA, +CE, CL
X1
ZD5226BSG
Cystech Electronics
SOD-323-S
Zener diode
3.3V±5%, 5mA, Zzt=95, 500mW
X1
ZGFM103V3-MH
Formosa Microsemi
SOD-123H
Zener diode
3.3V±10%, Zzt=10(Izt=76mA), 1W
X1
ZGFM103V3-N
Formosa Microsemi
SOD-123F
Zener diode
3.1..3.5V, Izt=76mA, Zzt=10, 1W
X1-
RT9198T-25PB
Richtek Technology
SOT-23-5
Linear voltage regulator IC
LDO, 2.5V±1%, 300mA, +CE
X10
R1131N101A
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.0V±2%, 300mA, +CE
X100
R1190H100D
Ricoh
SOT-89-5
Linear voltage regulator IC
10.0V±1.5%, 1A, +CE, CL
X101
R1190H101D
Ricoh
SOT-89-5
Linear voltage regulator IC
10.1V±1.5%, 1A, +CE, CL
X102
R1190H102D
Ricoh
SOT-89-5
Linear voltage regulator IC
10.2V±1.5%, 1A, +CE, CL
X103
R1190H103D
Ricoh
SOT-89-5
Linear voltage regulator IC
10.3V±1.5%, 1A, +CE, CL
X104
R1190H104D
Ricoh
SOT-89-5
Linear voltage regulator IC
10.4V±1.5%, 1A, +CE, CL
X105
R1190H105D
Ricoh
SOT-89-5
Linear voltage regulator IC
10.5V±1.5%, 1A, +CE, CL
X106
R1190H106D
Ricoh
SOT-89-5
Linear voltage regulator IC
10.6V±1.5%, 1A, +CE, CL
X107
R1190H107D
Ricoh
SOT-89-5
Linear voltage regulator IC
10.7V±1.5%, 1A, +CE, CL
X108
R1190H108D
Ricoh
SOT-89-5
Linear voltage regulator IC
10.8V±1.5%, 1A, +CE, CL
X109
R1190H109D
Ricoh
SOT-89-5
Linear voltage regulator IC
10.9V±1.5%, 1A, +CE, CL
X11
2SK425-11
NEC Electronics
SOT-23
FET n-type
AF, 50V, 30mA, 200mW, Idss=1..4mA, Up<1.2V
X11
IMX11
Rohm
SOT-363
NPN transistor
Dual, HF, 25V, 20mA
X11
R1131N111A
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.1V±2%, 300mA, +CE
X110
R1190H110D
Ricoh
SOT-89-5
Linear voltage regulator IC
11.0V±1.5%, 1A, +CE, CL
X111
R1190H111D
Ricoh
SOT-89-5
Linear voltage regulator IC
11.1V±1.5%, 1A, +CE, CL
X112
R1190H112D
Ricoh
SOT-89-5
Linear voltage regulator IC
11.2V±1.5%, 1A, +CE, CL
X113
R1190H113D
Ricoh
SOT-89-5
Linear voltage regulator IC
11.3V±1.5%, 1A, +CE, CL
X114
R1190H114D
Ricoh
SOT-89-5
Linear voltage regulator IC
11.4V±1.5%, 1A, +CE, CL
X115
R1190H115D
Ricoh
SOT-89-5
Linear voltage regulator IC
11.5V±1.5%, 1A, +CE, CL
X116
R1190H116D
Ricoh
SOT-89-5
Linear voltage regulator IC
11.6V±1.5%, 1A, +CE, CL
X117
R1190H117D
Ricoh
SOT-89-5
Linear voltage regulator IC
11.7V±1.5%, 1A, +CE, CL
X118
R1190H118D
Ricoh
SOT-89-5
Linear voltage regulator IC
11.8V±1.5%, 1A, +CE, CL
X119
R1190H119D
Ricoh
SOT-89-5
Linear voltage regulator IC
11.9V±1.5%, 1A, +CE, CL
X12
2SK425-12
NEC Electronics
SOT-23
FET n-type
AF, 50V, 30mA, 200mW, Idss=3..6mA, Up<1.2V
X12
R1131N121A
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.2V±2%, 300mA, +CE
X120
R1190H120D
Ricoh
SOT-89-5
Linear voltage regulator IC
12.0V±1.5%, 1A, +CE, CL
X13
2SK425-13
NEC Electronics
SOT-23
FET n-type
AF, 50V, 30mA, 200mW, Idss=5..8mA, Up<1.2V
X13
R1131N131A
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.3V±2%, 300mA, +CE
X14
2SK425-14
NEC Electronics
SOT-23
FET n-type
AF, 50V, 30mA, 200mW, Idss=7..10mA, Up<1.2V
X14
R1131N141A
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.4V±2%, 300mA, +CE
X15
2SK425-15
NEC Electronics
SOT-23
FET n-type
AF, 50V, 30mA, 200mW, Idss=9..12mA, Up<1.2V
X15
R1131N151A
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.5V±2%, 300mA, +CE
X15
XC9110D151MR
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PFM step-up, 100kHz, 1.5V±2.5%, 400mA, +CE
X16
2SK425-16
NEC Electronics
SOT-23
FET n-type
AF, 50V, 30mA, 200mW, Idss=11..14mA, Up<1.2V
X16
R1131N161A
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.6V±2%, 300mA, +CE
X16
XC9110D161MR
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PFM step-up, 100kHz, 1.6V±2.5%, 400mA, +CE
X16C
SS6680C-16CX
Silicon Standard
SOT-89
Voltage detector IC
1.6V±2.5%, +Reset PPO
X16N
SS6680N-16CX
Silicon Standard
SOT-89
Voltage detector IC
1.6V±2.5%, +Reset ODO
X16P
SS6680P-16CX
Silicon Standard
SOT-89
Voltage detector IC
1.6V±2.5%, -Reset ODO
X17
2SK425-17
NEC Electronics
SOT-23
FET n-type
AF, 50V, 30mA, 200mW, Idss=13..16mA, Up<1.2V
X17
IMX17
Rohm
SOT-363
NPN transistor
Dual, 60V, 500mA, 250MHz
X17
R1131N171A
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.7V±2%, 300mA, +CE
X17
XC9110D171MR
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PFM step-up, 100kHz, 1.7V±2.5%, 400mA, +CE
X17C
SS6680C-17CX
Silicon Standard
SOT-89
Voltage detector IC
1.7V±2.5%, +Reset PPO
X17N
SS6680N-17CX
Silicon Standard
SOT-89
Voltage detector IC
1.7V±2.5%, +Reset ODO
X17P
SS6680P-17CX
Silicon Standard
SOT-89
Voltage detector IC
1.7V±2.5%, -Reset ODO
X18
2SK425-18
NEC Electronics
SOT-23
FET n-type
AF, 50V, 30mA, 200mW, Idss=15..18mA, Up<1.2V
X18
R1131N181A
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.8V±2%, 300mA, +CE
X18
XC9110D181MR
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PFM step-up, 100kHz, 1.8V±2.5%, 400mA, +CE
X18C
SS6680C-18CX
Silicon Standard
SOT-89
Voltage detector IC
1.8V±2.5%, +Reset PPO
X18N
SS6680N-18CX
Silicon Standard
SOT-89
Voltage detector IC
1.8V±2.5%, +Reset ODO
X18P
SS6680P-18CX
Silicon Standard
SOT-89
Voltage detector IC
1.8V±2.5%, -Reset ODO
X19
R1131N191A
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.9V±2%, 300mA, +CE
X19
XC9110D191MR
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PFM step-up, 100kHz, 1.9V±2.5%, 400mA, +CE
X19C
SS6680C-19CX
Silicon Standard
SOT-89
Voltage detector IC
1.9V±2.5%, +Reset PPO
X19N
SS6680N-19CX
Silicon Standard
SOT-89
Voltage detector IC
1.9V±2.5%, +Reset ODO
X19P
SS6680P-19CX
Silicon Standard
SOT-89
Voltage detector IC
1.9V±2.5%, -Reset ODO
X1A
R3119N069E
Ricoh
SOT-23-5
Voltage detector IC
6.9V±1.5%, ±Reset ODO, Sense
X1A
XC6118N31AGR-G
Torex Semiconductor
USP-4
Voltage detector IC
3.1V±2%, ±Reset ODO, Sense, hysteresis 5%, Cd
X1A
XC6118N31AMR-G
Torex Semiconductor
SOT-25
Voltage detector IC
3.1V±2%, ±Reset ODO, Sense, hysteresis 5%, Cd
X1B
R3119N070E
Ricoh
SOT-23-5
Voltage detector IC
7.0V±1.5%, ±Reset ODO, Sense
X1B
XC6118N31BGR-G
Torex Semiconductor
USP-4
Voltage detector IC
3.1V±2%, ±Reset ODO, Sense, hysteresis <1%, Cd
X1B
XC6118N31BMR-G
Torex Semiconductor
SOT-25
Voltage detector IC
3.1V±2%, ±Reset ODO, Sense, hysteresis <1%, Cd
X1C
R3119N071E
Ricoh
SOT-23-5
Voltage detector IC
7.1V±1.5%, ±Reset ODO, Sense
X1C
XC6118N31CGR-G
Torex Semiconductor
USP-4
Voltage detector IC
3.1V±2%, ±Reset ODO, Sense, hysteresis 5%
X1C
XC6118N31CMR-G
Torex Semiconductor
SOT-25
Voltage detector IC
3.1V±2%, ±Reset ODO, Sense, hysteresis 5%
X1D
R3119N072E
Ricoh
SOT-23-5
Voltage detector IC
7.2V±1.5%, ±Reset ODO, Sense
X1D
XC6118N31DGR-G
Torex Semiconductor
USP-4
Voltage detector IC
3.1V±2%, ±Reset ODO, Sense, hysteresis <1%
X1D
XC6118N31DMR-G
Torex Semiconductor
SOT-25
Voltage detector IC
3.1V±2%, ±Reset ODO, Sense, hysteresis <1%
X1E
R3119N073E
Ricoh
SOT-23-5
Voltage detector IC
7.3V±1.5%, ±Reset ODO, Sense
X1F
R3119N074E
Ricoh
SOT-23-5
Voltage detector IC
7.4V±1.5%, ±Reset ODO, Sense
X1G
R3119N075E
Ricoh
SOT-23-5
Voltage detector IC
7.5V±1.5%, ±Reset ODO, Sense
X1H
R3119N076E
Ricoh
SOT-23-5
Voltage detector IC
7.6V±1.5%, ±Reset ODO, Sense
X1J
R3119N077E
Ricoh
SOT-23-5
Voltage detector IC
7.7V±1.5%, ±Reset ODO, Sense
X1K
R3119N078E
Ricoh
SOT-23-5
Voltage detector IC
7.8V±1.5%, ±Reset ODO, Sense
X1L
R3119N079E
Ricoh
SOT-23-5
Voltage detector IC
7.9V±1.5%, ±Reset ODO, Sense
X1M
R3119N080E
Ricoh
SOT-23-5
Voltage detector IC
8.0V±1.5%, ±Reset ODO, Sense
X1N
R3119N081E
Ricoh
SOT-23-5
Voltage detector IC
8.1V±1.5%, ±Reset ODO, Sense
X1p
BFT93
Philips
SOT-23
PNP transistor
UHF-A, 15V, 35mA, 5GHz
X1P
R3119N082E
Ricoh
SOT-23-5
Voltage detector IC
8.2V±1.5%, ±Reset ODO, Sense
X1R
R3119N083E
Ricoh
SOT-23-5
Voltage detector IC
8.3V±1.5%, ±Reset ODO, Sense
X1S
R3119N084E
Ricoh
SOT-23-5
Voltage detector IC
8.4V±1.5%, ±Reset ODO, Sense
X1T
R3119N085E
Ricoh
SOT-23-5
Voltage detector IC
8.5V±1.5%, ±Reset ODO, Sense
X1U
R3119N086E
Ricoh
SOT-23-5
Voltage detector IC
8.6V±1.5%, ±Reset ODO, Sense
X1V
R3119N087E
Ricoh
SOT-23-5
Voltage detector IC
8.7V±1.5%, ±Reset ODO, Sense
X1W
R3119N088E
Ricoh
SOT-23-5
Voltage detector IC
8.8V±1.5%, ±Reset ODO, Sense
X1X
R3119N089E
Ricoh
SOT-23-5
Voltage detector IC
8.9V±1.5%, ±Reset ODO, Sense
X1Y
R3119N090E
Ricoh
SOT-23-5
Voltage detector IC
9.0V±1.5%, ±Reset ODO, Sense
X1Z
R3119N091E
Ricoh
SOT-23-5
Voltage detector IC
9.1V±1.5%, ±Reset ODO, Sense