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 'S4'

Marking
Name
Manufacturer/Case
Function
S4
1PS10SB63
Philips
SOD-882
Diode
Schottky, Sw, Fast, 5V, 20mA, Vf<0.3V(1mA), <0.5pF
S4
1PS76SB40
NXP Semiconductors
SOD-323
Diode
SBD, Hi-Speed, 40V, 120mA, <5pF
S4
1PS89SS04
Philips
SOT-490
Diode
Dual, Schottky barrier, Ultra-Speed, 85V, 200mA, <1.5pF
S4
1SS355
Tak Cheong Semiconductor
SOD-323
Diode
Sw, 90V, 150mA, Vf<1.2V(100mA), 4ns
S4
1SS367
Toshiba
SOD-123
Diode
Schottky, Sw, 15V, 100mA
S4
1SS373
Toshiba
SOD-323
Diode
Schottky, Sw, 15V, 100mA
S4
1SS389
Toshiba
SOD-523
Diode
Schottky, 40V, 100mA
S4
2SA813-4
NEC Electronics
SOT-23
PNP transistor
GP, 60V, 200mA, 150mW, B=120..240, 200MHz
S4
2SC3361-4
Sanyo Electric
SOT-23
NPN transistor
Sw, Hi-Sp, 60V, 150mA, 150mW, 100MHz, B=100..200
S4
APX803-44SR
Diodes
SOT-23
Voltage detector IC
4.38V±1.5%, -Reset ODO
S4
BBQ31A
Zetex
SOT-23
NPN transistor
HF, 30V, 100mA, 330mW, B>100, >600MHz
S4
BBY62
Philips
SOT-143
Capacitance diode
Dual, UHF-Tuning, 30V, 20mA, 1.6..16.5pF(28/1V)
S4
BFQ31A
Zetex
SOT-23
NPN transistor
VHF, 30V, 100mA, 200mW, B>20, >600MHz
S4
BSV37
Ferranti Semiconductors
SOT-323
PNP transistor
Sw, 12V, 500mA, <60/90ns
S4
ELM7634HCB
ELM Technology
SOT-23
Voltage detector IC
3.4V±2%, +Reset PPO, 150ms
S4
ELM9744CAB
ELM Technology
SOT-89
Voltage detector IC
4.4V±2.5%, +Reset PPO
S4
ELM9744CBB
ELM Technology
SOT-23
Voltage detector IC
4.4V±2.5%, +Reset PPO
S4
FMS4
Rohm
SOT-23-5
PNP transistor
Dual, GP, 120V, 50mA, 140MHz
S4
FS2G
Fagor Electronica
DO-214AA
Diode
Rectifier, 400V, 1.5A, Vf<1.1V(1.5A), 4µs
S4
KA4A4L
NEC Electronics
SOT-416
NPN transistor
Sw, 60V, 100mA, 200mW, R1/R2=10k/4k7
S4
KTA2014-4
Korea Electronics
USM
PNP transistor
GP, 50V, 150mA, 100mW, B=120..240, >80MHz
S4
KTA2014E-4
Korea Electronics
ESM
PNP transistor
GP, 50V, 150mA, 100mW, B=120..240, >80MHz
S4
KTA2014F-4
Korea Electronics
TFSM
PNP transistor
GP, 50V, 150mA, 100mW, B=120..240, >80MHz
S4
KTA2014V-4
Korea Electronics
VSM
PNP transistor
GP, 50V, 150mA, 100mW, B=120..240, >80MHz
S4
KTA501E-Y
Korea Electronics
TESV
PNP transistor
Dual GP, 50V, 150mA, 100mW, B=120..240, 80MHz
S4
KTA501U-Y
Korea Electronics
USV
PNP transistor
Dual GP, 50V, 150mA, 100mW, B=120..240, 80MHz
S4
R1121N341B
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, Low noise, 3.4V±2%, 150mA, +CE
S4
R1131D141D
Ricoh
SON-6
Linear voltage regulator IC
LDO, 1.4V±2%, 300mA, +CE, CL
S4
R1225N182D
Ricoh
SOT-23-6W
DC/DC voltage converter IC
PWM step-down, 1.8V±2%, 500kHz
S4
R3116Q211C
Ricoh
SC-82AB
Voltage detector IC
2.1V±0.8%, -Reset PPO
S4
R3117K213C
Ricoh
DFN1010-4
Voltage detector IC
2.1V±1%, -Reset PPO, Sense
S4
R3130N30DA8
Ricoh
SOT-23
Voltage detector IC
3V±1.5%, -Reset PPO, 200ms
S4
RP104Q321D
Ricoh
SC-82AB
Linear voltage regulator IC
LDO, 3.2V±0.8%, 150mA, +CE, CL
S4
RP114K321D
Ricoh
DFN1010-4
Linear voltage regulator IC
LDO, 3.2V±1%, 300mA, +CE, CL
S4
SD103AW
Diodes
SOD-123
Diode
Schottky, Sw, 40V, 350mA, 400mW, 10ns, 28pF
S4
SD103AWS
Diodes
SOD-323
Diode
Schottky, Sw, 40V, 350mA, 200mW, 10ns, 28pF
S4
SD103BW
Diodes
SOD-123
Diode
Schottky, Sw, 30V, 350mA, 400mW, 10ns, 28pF
S4
SD103BWS
Diodes
SOD-323
Diode
Schottky, Sw, 30V, 350mA, 200mW, 10ns, 28pF
S4
SD103CW
Diodes
SOD-123
Diode
Schottky, Sw, 20V, 350mA, 400mW, 10ns, 28pF
S4
SD103CWS
Diodes
SOD-323
Diode
Schottky, Sw, 20V, 350mA, 200mW, 10ns, 28pF
S4
SP809EK-4-0
Sipex
SOT-23
Voltage detector IC
4.0V±1.5%, -Reset PPO
S4
SS14
Vishay Semiconductor
DO-214AC
Diode
SBR, 40V, 1A, Vf<0.5V(1A)
S4
SS24
Vishay Semiconductor
DO-214AA
Diode
SBR, 40V, 2A, Vf<0.5V(2A)
S4
SS34
Vishay Semiconductor
DO-214AB
Diode
SBR, 40V, 3A, Vf<0.5V(3A)
S4
SSM5819SLGP
Chenmko Enterprise
SOD-123
Diode
SBR, 40V, 500mA, Vf<0.51V(500mA)
S4
SST174
Siliconix
SOT-23
FET p-type
Sw, 30V, 350mW, Idss=135mA, Rds(on)=85, 15/20ns
S4
XC6223C14BNR-G
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 1.45V±20mV, 300mA, +CE, PDR
S4
XC6225B18ANR-G
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 1.85V±2%, 30mA, +CE, CL
S4
ZXTP722MA
Zetex
DFN2020B-3
PNP transistor
Sw, Drv, 70V, 2.5A, 1.5W, B=300..470, 180MHz
S40
BAS40
PanJIT Semiconductor
SOT-23
Diode
SBD, 40V, 200mA, Vf<1V(40mA), 5ns
S40
BAS40TW
PanJIT Semiconductor
SOT-363
Diode
Triple, SBD, 40V, 200mA, Vf<1V(40mA), 5ns
S40
BAS40W
PanJIT Semiconductor
SOT-323
Diode
SBD, 40V, 200mA, Vf<1V(40mA), 5ns
S40
BAS40WS
PanJIT Semiconductor
SOD-323
Diode
SBD, 40V, 200mA, Vf<1V(40mA), 5pF
S40
GS810CJEU
Vishay Semiconductor
SOT-23
Voltage detector IC
4.0V±1.5%, +Reset PPO, 210ms
S40
R1162N401B
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 4.0V±2%, 150mA, +CE, AE(Mode)
S40
RP202N401B
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 4.0V±1%, 200mA, +CE
S40
XC6371E401P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 100kHz, 4.0V±2.5%, 100mA, int. Vdd
S40B
R1511S040B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.0V±1%, 300mA, +CE
S40C
FS8844-40GC
Fortune Semiconductor
SOT-23
Linear voltage regulator IC
LDO, 4.0V±2%, 250mA
S41
R1162N181B5
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 1.85V±2%, 150mA, +CE, AE(Mode)
S41
XC6371E411P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 100kHz, 4.1V±2.5%, 100mA, int. Vdd
S41B
R1511S041B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.1V±1%, 300mA, +CE
S41C
FS8844-41GC
Fortune Semiconductor
SOT-23
Linear voltage regulator IC
LDO, 4.1V±2%, 250mA
S42
BAS40A
PanJIT Semiconductor
SOT-23
Diode
Dual, SBD, 40V, 200mA, Vf<1V(40mA), 5ns
S42
BAS40ADW
PanJIT Semiconductor
SOT-363
Diode
Quad, SBD, 40V, 200mA, Vf<1V(40mA), 5ns
S42
BAS40AW
PanJIT Semiconductor
SOT-323
Diode
Dual, SBD, 40V, 200mA, Vf<1V(40mA), 5ns
S42
R1162N281B5
Ricoh
SOT-23-5
Linear voltage regulator IC
LDO, 2.85V±2%, 150mA, +CE, AE(Mode)
S42
SGM2122-ABYN6G
SG Micro
SOT-23-6L
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=1.8V/1.2V±2%, 250mA, +CE
S42
XC6371E421P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 100kHz, 4.2V±2.5%, 100mA, int. Vdd
S42B
R1511S042B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.2V±1%, 300mA, +CE
S42C
FS8844-42GC
Fortune Semiconductor
SOT-23
Linear voltage regulator IC
LDO, 4.2V±2%, 250mA
S43
BAS40C
PanJIT Semiconductor
SOT-23
Diode
Dual, SBD, 40V, 200mA, Vf<1V(40mA), 5ns
S43
BAS40CDW
PanJIT Semiconductor
SOT-363
Diode
Quad, SBD, 40V, 200mA, Vf<1V(40mA), 5ns
S43
BAS40CW
PanJIT Semiconductor
SOT-323
Diode
Dual, SBD, 40V, 200mA, Vf<1V(40mA), 5ns
S43
GS810CMEU
Vishay Semiconductor
SOT-23
Voltage detector IC
4.38V±1.5%, +Reset PPO, 210ms
S43
SGM2027-ACYTN6G
SG Micro
TSOT-23-6L
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.8V/3.3V±2%, 250mA, +CE
S43
XC6371E431P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 100kHz, 4.3V±2.5%, 100mA, int. Vdd
S43B
R1511S043B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.3V±1%, 300mA, +CE
S43C
FS8844-43GC
Fortune Semiconductor
SOT-23
Linear voltage regulator IC
LDO, 4.3V±2%, 250mA
S44
BAS40S
PanJIT Semiconductor
SOT-23
Diode
Dual, SBD, 40V, 200mA, Vf<1V(40mA), 5ns
S44
BAS40SDW
PanJIT Semiconductor
SOT-363
Diode
Quad, SBD, 40V, 200mA, Vf<1V(40mA), 5ns
S44
BAS40SW
PanJIT Semiconductor
SOT-323
Diode
Dual, SBD, 40V, 200mA, Vf<1V(40mA), 5ns
S44
SSB44
Vishay Semiconductor
DO-214AA
Diode
SBR, 40V, 4A, Vf<0.49V(4A)
S44
XC6371E441P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 100kHz, 4.4V±2.5%, 100mA, int. Vdd
S44B
R1511S044B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.4V±1%, 300mA, +CE
S44C
FS8844-44GC
Fortune Semiconductor
SOT-23
Linear voltage regulator IC
LDO, 4.4V±2%, 250mA
S45
BAS40RDW
PanJIT Semiconductor
SOT-363
Diode
Quad, SBD, 40V, 200mA, Vf<1V(40mA), 5ns
S45
XC6371E451P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 100kHz, 4.5V±2.5%, 100mA, int. Vdd
S45B
R1511S045B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.5V±1%, 300mA, +CE
S45C
FS8844-45GC
Fortune Semiconductor
SOT-23
Linear voltage regulator IC
LDO, 4.5V±2%, 250mA
S46
BAR46
SGS-Thomson Microelectronics
SOT-23
Diode
SBR, 100V, 150mA, 230mW, Vf<1V(250mA), 10pF
S46
BAT46
SGS-Thomson Microelectronics
SOT-23
Diode
SBD, 100V, 150mA, Vf<1V(250mA), 6pF
S46
GS810CLEU
Vishay Semiconductor
SOT-23
Voltage detector IC
4.63V±1.5%, +Reset PPO, 210ms
S46
XC6371E461P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 100kHz, 4.6V±2.5%, 100mA, int. Vdd
S46B
R1511S046B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.6V±1%, 300mA, +CE
S46C
FS8844-46GC
Fortune Semiconductor
SOT-23
Linear voltage regulator IC
LDO, 4.6V±2%, 250mA
S47
XC6371E471P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 100kHz, 4.7V±2.5%, 100mA, int. Vdd
S47B
R1511S047B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.7V±1%, 300mA, +CE
S47C
FS8844-47GC
Fortune Semiconductor
SOT-23
Linear voltage regulator IC
LDO, 4.7V±2%, 250mA
S48
XC6371E481P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 100kHz, 4.8V±2.5%, 100mA, int. Vdd
S48B
R1511S048B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.8V±1%, 300mA, +CE
S48C
FS8844-48GC
Fortune Semiconductor
SOT-23
Linear voltage regulator IC
LDO, 4.8V±2%, 250mA
S49
XC6371E491P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 100kHz, 4.9V±2.5%, 100mA, int. Vdd
S49B
R1511S049B
Ricoh
HSOP-6J
Linear voltage regulator IC
LDO, 4.9V±1%, 300mA, +CE
S49C
FS8844-49GC
Fortune Semiconductor
SOT-23
Linear voltage regulator IC
LDO, 4.9V±2%, 250mA
S4A
S-1721C2J2J-I6T1x
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.85V/2.85V±1.0%, 150mA, ±CE, PDR
S4A
S-1721C2J2J-M6T1x
Seiko Instruments
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.85V/2.85V±1.0%, 150mA, ±CE, PDR
S4A
XC6371E402P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 180kHz, 4.0V±2.5%, 100mA, int. Vdd
S4B
LM809M3-2.93
National Semiconductor
SOT-23
Voltage detector IC
2.93V±1.5%, -Reset PPO
S4B
XC6371E412P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 180kHz, 4.1V±2.5%, 100mA, int. Vdd
S4C
XC6371E422P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 180kHz, 4.2V±2.5%, 100mA, int. Vdd
S4D
XC6371E432P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 180kHz, 4.3V±2.5%, 100mA, int. Vdd
S4E
XC6371E442P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 180kHz, 4.4V±2.5%, 100mA, int. Vdd
S4F
XC6371E452P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 180kHz, 4.5V±2.5%, 100mA, int. Vdd
S4H
XC6371E462P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 180kHz, 4.6V±2.5%, 100mA, int. Vdd
S4K
XC6371E472P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 180kHz, 4.7V±2.5%, 100mA, int. Vdd
S4L
XC6371E482P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 180kHz, 4.8V±2.5%, 100mA, int. Vdd
S4M
XC6371E492P
Torex Semiconductor
SOT-89-5
DC/DC voltage converter IC
PWM step-up, 180kHz, 4.9V±2.5%, 100mA, int. Vdd
S4P01
MMSF4P01HD
Motorola
SOP-8
MOSFET p-type
V-MOS, LogL, 12V, 5.1A, 2.5W, <80m(5A)
S4P01Z
MMSF4P01Z
Motorola
SOP-8
MOSFET p-type
V-MOS, LogL, 20V, 5.7A, 2.5W, <70m(5A)
S4R
S-1721D1828-M6T1x
Seiko Instruments
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=1.8V/2.8V±1.0%, 150mA, -CE, PUR
S4S
S-1721D3318-I6T1x
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=3.3V/1.8V±1.0%, 150mA, -CE, PUR
S4S
S-1721D3318-M6T1x
Seiko Instruments
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=3.3V/1.8V±1.0%, 150mA, -CE, PUR
S4T
S-1721D1818-I6T1x
Seiko Instruments
SNT-6A
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=3.8V/1.8V±1.0%, 150mA, -CE, PUR