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 '4T'
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Marking
Name
Manufacturer/Case
Function
4T
MMDL301
ON Semiconductor
SOD-323
Diode
UHF/VHF Det, Schottky Barrier, 30V, 200mW, <0.9pF
4T
TPSMW39A
Fagor Electronica
SOD-123W
Transient voltage supressor
Vrm=33.3V, Vbr=37.1..41.0V, Ipp=5.6A, 300W
4T
DDZ10ASF
Diodes
SOD-323F
Zener diode
9.12..9.59V, Izt=20mA, Zzt=30, 500mW
4T
2SK1216
Panasonic
SOT-23
FET n-type
Vid-cam amp, 10V, 50mA, Idss>9.2mA
4T
MMBD301
ON Semiconductor
SOT-23
Diode
Schottky, UHF/VHF-Det, 30V, 200mW, <1.5pF
4T
R3131N30HA8
Ricoh
SOT-23
Voltage detector IC
3V±1.5%, +Reset PPO, Rdt=400ms
4T
APX803L05-27C3
Diodes
SOT-323
Voltage detector IC
2.7V±1.5%, -Reset ODO, Rdt=55ms
4T
MMBD330
ON Semiconductor
SOT-323
Diode
Schottky, UHF/VHF-Det, 70V, 10mA, Vf<0.6V(10mA), <1pF
4T
RQ5RW46CA
Ricoh
SC-82AB
Linear voltage regulator IC
LDO, 4.6V±2%, 150mA
4T
IMP162TEUS
IMP
SOT-143
Voltage detector IC
3.08V±1.5%, +Reset ODO, -MR
4T
IXD5126N50ANR-G
IXYS
SSOT-24
Voltage detector IC
5.0V±0.8%, -Reset ODO
4T
IXD5127N43ENR
IXYS
SSOT-24
Voltage detector IC
4.3V±0.8%, -Reset ODO, -MR, 800ms Rt delay
4T
XC6126N50ANR-G
Torex Semiconductor
SSOT-24
Voltage detector IC
5.0V±0.8%, -Reset ODO
4T
XC6127N43ENR
Torex Semiconductor
SSOT-24
Voltage detector IC
4.3V±0.8%, -Reset ODO, -MR, Rdt=800ms
4T
XC6129C43ENR-G
Torex Semiconductor
SSOT-24
Voltage detector IC
4.3V±0.8%, -Reset PPO, Releas. Delay, Det. Delay
4T
XC6129N43ENR-G
Torex Semiconductor
SSOT-24
Voltage detector IC
4.3V±0.8%, -Reset ODO, Releas. Delay, Det. Delay
4T
XC6221D321NR
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 3.2V±1%, 200mA, +CE, CL, PDR
4T
R3117K481C
Ricoh
DFN1010-4
Voltage detector IC
4.8V±1%, -Reset PPO, Sense
4T
RP173K501B
Ricoh
DFN1010-4
Linear voltage regulator IC
LDO, 5.0V±1%, 150mA, +CE
4T
RP101K231D
Ricoh
DFN1612-4
Linear voltage regulator IC
LDO, LN, 2.3V±0.8%, 300mA, +CE, CL
4T
XC6221D3217R
Torex Semiconductor
USPN-4
Linear voltage regulator IC
LDO, 3.2V±1%, 200mA, +CE, CL, PDR
4T
IXD5126C20A7R-G
IXYS
USPN-4B02
Voltage detector IC
2.0V±0.8%, -Reset PPO
4T
XC6126C20A7R-G
Torex Semiconductor
USPN-4B02
Voltage detector IC
2.0V±0.8%, -Reset PPO
4T
XC6223E3419R-G
Torex Semiconductor
USPQ-4B03
Linear voltage regulator IC
LDO, 3.4V±1%, 300mA, +CE, ICP
4T
XC6129C43E9R-G
Torex Semiconductor
USPQ-4B05
Voltage detector IC
4.3V±0.8%, -Reset PPO, Releas. Delay, Det. Delay
4T
XC6129N43E9R-G
Torex Semiconductor
USPQ-4B05
Voltage detector IC
4.3V±0.8%, -Reset ODO, Releas. Delay, Det. Delay
4T
RN5RF14BA
Ricoh
SOT-23-5
Linear voltage regulator IC
LRip, +CE, 1.4V±2%, 1A (ext. transistor)
4T
74LVC2G00HD4
Diodes
X2-DFN2010-8
CMOS logic IC
Dual 2-input NAND gate
4T0
IXD3235E40CMR-G
IXYS
SOT-25
DC/DC voltage converter IC
PWM, st-dwn, 4.0V±2%, 600mA, 1.2MHz, Vin>1.8V, LSST, CL
4T0
XC6105F531MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.1V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4T0
XC9235E40CMR-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM, st-dwn, 4.0V±2%, 600mA, 1.2MHz, Vin>1.8V, LSST, CL
4T0
IXD3235E40C0R-G
IXYS
WLP-5-03
DC/DC voltage converter IC
PWM, st-dwn, 4.0V±2%, 600mA, 1.2MHz, Vin>1.8V, LSST, CL
4T0
XC9235E40C0R-G
Torex Semiconductor
WLP-5-03
DC/DC voltage converter IC
PWM, st-dwn, 4.0V±2%, 600mA, 1.2MHz, Vin>1.8V, LSST, CL
4T0
IXD3235E40CER-G
IXYS
USP-6C
DC/DC voltage converter IC
PWM, st-dwn, 4.0V±2%, 600mA, 1.2MHz, Vin>1.8V, LSST, CL
4T0
XC9235E40CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM, st-dwn, 4.0V±2%, 600mA, 1.2MHz, Vin>1.8V, LSST, CL
4T0
IXD3235E40C4R-G
IXYS
USP-6EL
DC/DC voltage converter IC
PWM, st-dwn, 4.0V±2%, 600mA, 1.2MHz, Vin>1.8V, LSST, CL
4T0
XC9235E40C4R-G
Torex Semiconductor
USP-6EL
DC/DC voltage converter IC
PWM, st-dwn, 4.0V±2%, 600mA, 1.2MHz, Vin>1.8V, LSST, CL
4T1
STZ8220A
JinYu semiconductor
SOD-323
Zener diode
20.8..21.86V, Izt=5mA, Zzt=8, 300mW
4T1
TCR3UF41B
Toshiba
SOT-25
Linear voltage regulator IC
LDO, 4.1V±1%, 300mA, +CE
4T1
XC6105F532MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.2V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4T2
UM1441S-22
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 2.2±3%, 100mA, +CE
4T2
TCR3UF42B
Toshiba
SOT-25
Linear voltage regulator IC
LDO, 4.2V±1%, 300mA, +CE
4T2
XC6105F533MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.3V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4T3
UM1441S-23
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 2.3±3%, 100mA, +CE
4T3
XC6105F534MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.4V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4T4
UM1441S-24
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 2.4±3%, 100mA, +CE
4T4
XC6105F535MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.5V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4T5
UM1441S-25
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 2.5±3%, 100mA, +CE
4T5
TCR3UF45B
Toshiba
SOT-25
Linear voltage regulator IC
LDO, 4.5V±1%, 300mA, +CE
4T5
XC6105F536MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.6V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4T6
UM1441S-26
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 2.6±3%, 100mA, +CE
4T6
XC6105F537MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.7V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4T7
UM1441S-27
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 2.7±3%, 100mA, +CE
4T7
XC6105F538MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.8V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4T8
UM1441S-28
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 2.8±3%, 100mA, +CE
4T8
XC6105F539MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.9V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4T9
UM1441S-29
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 2.9±3%, 100mA, +CE
4T9
XC6105F540MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.0V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TA
UM1441S-20
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 2.0±3%, 100mA, +CE
4TA
XC6105F541MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.1V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TB
UM1441S-21
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 2.1±3%, 100mA, +CE
4TB
XC6105F542MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.2V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TC
UM1441S-30
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 3.0±3%, 100mA, +CE
4TC
XC6105F543MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.3V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TD
UM1441S-31
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 3.1±3%, 100mA, +CE
4TD
XC6105F544MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.4V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TE
UM1441S-32
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 3.2±3%, 100mA, +CE
4TE
XC6105F545MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.5V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TF
UM1441S-33
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 3.3±3%, 100mA, +CE
4TF
XC6105F516MR
Torex Semiconductor
SOT-25
Voltage detector IC
1.6V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TF
XC6105F546MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.6V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TH
UM1441S-34
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 3.4±3%, 100mA, +CE
4TH
XC6105F517MR
Torex Semiconductor
SOT-25
Voltage detector IC
1.7V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TH
XC6105F547MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.7V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TJ
UM1441S-37
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 3.7±3%, 100mA, +CE
4TK
UM1441S-38
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 3.8±3%, 100mA, +CE
4TK
XC6105F518MR
Torex Semiconductor
SOT-25
Voltage detector IC
1.8V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TK
XC6105F548MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.8V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TL
UM1441S-35
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 3.5±3%, 100mA, +CE
4TL
XC6105F519MR
Torex Semiconductor
SOT-25
Voltage detector IC
1.9V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TL
XC6105F549MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.9V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TM
UM1441S-36
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 3.6±3%, 100mA, +CE
4TM
XC6105F520MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.0V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TM
XC6105F550MR
Torex Semiconductor
SOT-25
Voltage detector IC
5.0V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TN
UM1441S-39
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 3.9±3%, 100mA, +CE
4TN
XC6105F521MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.1V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TP
UM1441S-40
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 4.0±3%, 100mA, +CE
4TP
XC6105F522MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.2V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TP
UM824TP
Union Semiconductor
SOT-353
Voltage detector IC
3.08V±2%, WDI, ±Reset PPO
4TQ
UM1441S-41
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 4.1±3%, 100mA, +CE
4TR
UM1441S-42
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 4.2±3%, 100mA, +CE
4TR
XC6105F523MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.3V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TS
UM1441S-43
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 4.3±3%, 100mA, +CE
4TS
XC6105F524MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.4V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TT
UM1441S-44
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 4.4±3%, 100mA, +CE
4TT
XC6105F525MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.5V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TU
UM1441S-46
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 4.6±3%, 100mA, +CE
4TU
XC6105F526MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.6V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TV
XC6105F527MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.7V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TX
XC6105F528MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.8V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TY
UM1441S-45
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 4.5±3%, 100mA, +CE
4TY
XC6105F529MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.9V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms
4TZ
UM1441S-47
Union Semiconductor
SOT-23-5
Linear voltage regulator IC
LDO, 4.7±3%, 100mA, +CE
4TZ
XC6105F530MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.0V±2%, Hst, +Rst PPO, -Rst ODO, Wt=400ms, Rdt=400ms

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