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 'YF'

Marking
Name
Manufacturer/Case
Function
YF
2SC3728-F
Mitsubishi Electric
SOT-89
NPN transistor
Driver, 20V, 2A, 500mW, 80MHz, B=250..500
YF
APX810-26SR
Diodes
SOT-23
Voltage detector IC
2.63V±1.5%, +Reset PPO
YF
APX810S-26SR-7
Diodes
SOT-23
Voltage detector IC
2.63V±1.5%, +Reset PPO, 240ms Rt delay
Yf
BD45E385G-M
Rohm
SSOP-5
Voltage detector IC
3.8V±1%, -MR, -Reset ODO, Td=50ms
YF
BU4214F
Rohm
SOP-4
Voltage detector IC
1.4V±1%, -Reset ODO
YF
BU4214FWE
Rohm
VSOF-5
Voltage detector IC
1.4V±1%, -Reset ODO
YF
BU4214G
Rohm
SSOP-5
Voltage detector IC
1.4V±1%, -Reset ODO
YF
BZT52C9V1-V-G
Vishay Semiconductor
SOD-123
Zener diode
9.1V±5%, Izt=5mA, Zzt=15, 500mW
YF
BZX384C9V1-V-G
Vishay Semiconductor
SOD-323
Zener diode
9.1V±5%, Izt=5mA, Zzt=6, 200mW
YF
BZX84C43
Diodes
SOT-23
Zener diode
40..46V, Zzt=150, Izt=5mA, 350mW
YF
BZX84C43
Diodes
SOT-23
Zener diode
40..46V, Zzt=150, Izt=5mA, 350mW
YF
CZMK20
Continental Device India
SOT-23
Zener diode
Dual, 20V±5%, Izt=5mA, 300mW
YF
EC76SMAJ28C
E-CMOS
DO-214AC
Transient voltage supressor
Vbr=31.1..38.0V, Vrwm=28V, Ipp=8.0A, 400W(1ms), Bidirectional
YF
KRC826E
Korea Electronics
TES6
NPN transistor
Dual, Sw, 50V, 100mA, 200mW, R1/R2=4.7k/47k
YF
KRC826U
Korea Electronics
US6
NPN transistor
Dual, Sw, 50V, 100mA, 200mW, R1/R2=4.7k/47k
YF
MAZD330
Panasonic
SSSMini2
Zener diode
31..35V, Zzt=200(5mA), 120mW
YF
P4SMAJ28C
Shanghai Lunsure Electronic Technology
DO-214AC
Transient voltage supressor
Vrwm=28V, Vbr=31.1..38.0V, Ipp=8.0A, 400W(1ms), Bidirectional
YF
PZU20B3A/DG
NXP Semiconductors
SOD-323
Zener diode
20.21..21.08V, Zzt=20(Iz=5mA), 320mW, Halogen free
YF
R1210N252D
Ricoh
SOT-23-5
DC/DC voltage converter IC
PWM step-up, 2.5V, 180kHz, +CE, ext. transistor
YF
R5325N017A
Ricoh
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=2.9V/2.9V±1%, 150mA, +CE
YF
RN2106
Toshiba
SOT-416
PNP transistor
Sw, 50V, 100mA, 100mW, R1/R2=4.7k/47k
YF
RN2106F
Toshiba
SOT-490
PNP transistor
Sw, 50V, 100mA, 100mW, R1/R2=4.7k/47k
YF
RN2106FT
Toshiba
TESM
PNP transistor
Sw, 50V, 100mA, 100mW, R1/R2=4.7k/47k
YF
RN2106FV
Toshiba
SOT-723
PNP transistor
Sw, 50V, 100mA, 150mW, R1/R2=4.7k/47k
YF
RN2306
Toshiba
SOT-346
PNP transistor
Sw, 50V, 100mA, 400mW, R1/R2=4.7k/47k
YF
RN2406
Toshiba
SOT-346
PNP transistor
Sw, 50V, 100mA, 400mW, R1/R2=4.7k/47k
YF
RN2506
Toshiba
SMV
PNP transistor
Dual, Sw, 50V, 100mA, 300mW, R1/R2=4.7k/47k
YF
RN2606
Toshiba
SM6
PNP transistor
Dual, Sw, 50V, 100mA, 300mW, R1/R2=4.7k/47k
YF
RN2706
Toshiba
SOT-353
PNP transistor
Dual, Sw, 50V, 100mA, 200mW, R1/R2=4.7k/47k
YF
RN2706JE
Toshiba
SOT-553
PNP transistor
Dual, Sw, 50V, 100mA, 100mW, R1/R2=4.7k/47k
YF
RN2906
Toshiba
US6
PNP transistor
Dual, Sw, 50V, 100mA, 200mW, R1/R2=4.7k/47k
YF
RN2906FE
Toshiba
SOT-563
PNP transistor
Dual, Sw, 50V, 100mA, 100mW, R1/R2=4.7k/47k
YF
RN5RK502A
Ricoh
SOT-23-5
DC/DC voltage converter IC
VFM step-up, Vout=5.0V±1.5%
YF
RP201K131D
Ricoh
DFN1212-6
Linear voltage regulator IC
LDO, 1.3V±1%, 150mA, +CE, CL, AE(Mode)
YF
SMAJ250CG
First Semiconductor
DO-214AC
Transient voltage supressor
Vrwm=250V, Vbr=278..342.5V, Ipp=0.9A, 400W(1ms), Bidirectional
YF
SMAJ28C
Socay Electronics
DO-214AC
Transient voltage supressor
Vrwm=28.0V, Vbr=31.10..38.0V, Ipp=8.0A, 400W(1ms), Bidirectional
YF
SMAJ28C
Vishay Semiconductor
DO-214AC
Transient voltage supressor
Vrwm=28V, Vbr=31.1..38.0V, 8A, 400W(1ms), Bidirectional
YF
SMZG3803B
Vishay Semiconductor
DO-215AA
Zener diode
39V±10%, 31mA, Zzt=45, 1.5W
YF
SMZJ3803B
Vishay Semiconductor
DO-214AA
Zener diode
39V±10%, 31mA, Zzt=45, 1.5W
YF
TV04A280KB-G
Comchip Technology
DO-214AC
Transient voltage supressor
Vrwm=28.0V, Vbr=31.10..38.0V, Ipp=8.0A, 400W(1ms), Bidirectional
YF
TZT20CW
TAITRON Components
SOT-23
Zener diode
Dual, 18.8..21.2V, Izt=5mA, Zzt=55, 300mW
YF
XC6223H25BNR-G
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 2.55V±1%, 300mA, +CE, CL, PDR, Inrush current protection
YF
XC6501D34ANR-G
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 3.45V±1%, 200mA, +CE, CL, PDR
YF0
XC9142C38C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 3.8V±2%, +CE (compl. out discon.)
YF0
XC9142C38C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 3.8V±2%, +CE (compl. out discon.)
YF0
XC9142C38CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 3.8V±2%, +CE (compl. out discon.)
YF1
XC9142C39C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 3.9V±2%, +CE (compl. out discon.)
YF1
XC9142C39C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 3.9V±2%, +CE (compl. out discon.)
YF1
XC9142C39CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 3.9V±2%, +CE (compl. out discon.)
YF2
XC9142C40C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.0V±2%, +CE (compl. out discon.)
YF2
XC9142C40C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.0V±2%, +CE (compl. out discon.)
YF2
XC9142C40CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.0V±2%, +CE (compl. out discon.)
YF3
XC9142C41C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.1V±2%, +CE (compl. out discon.)
YF3
XC9142C41C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.1V±2%, +CE (compl. out discon.)
YF3
XC9142C41CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.1V±2%, +CE (compl. out discon.)
YF4
XC9142C42C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.2V±2%, +CE (compl. out discon.)
YF4
XC9142C42C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.2V±2%, +CE (compl. out discon.)
YF4
XC9142C42CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.2V±2%, +CE (compl. out discon.)
YF5
XC9142C43C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.3V±2%, +CE (compl. out discon.)
YF5
XC9142C43C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.3V±2%, +CE (compl. out discon.)
YF5
XC9142C43CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.3V±2%, +CE (compl. out discon.)
YF6
XC9142C44C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.4V±2%, +CE (compl. out discon.)
YF6
XC9142C44C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.4V±2%, +CE (compl. out discon.)
YF6
XC9142C44CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.4V±2%, +CE (compl. out discon.)
YF7
XC9142C45C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.5V±2%, +CE (compl. out discon.)
YF7
XC9142C45C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.5V±2%, +CE (compl. out discon.)
YF7
XC9142C45CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.5V±2%, +CE (compl. out discon.)
YF8
XC9142C46C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.6V±2%, +CE (compl. out discon.)
YF8
XC9142C46C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.6V±2%, +CE (compl. out discon.)
YF8
XC9142C46CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.6V±2%, +CE (compl. out discon.)
YF9
XC9142C47C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.7V±2%, +CE (compl. out discon.)
YF9
XC9142C47C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.7V±2%, +CE (compl. out discon.)
YF9
XC9142C47CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.7V±2%, +CE (compl. out discon.)
YFA
XC9142C48C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.8V±2%, +CE (compl. out discon.)
YFA
XC9142C48C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.8V±2%, +CE (compl. out discon.)
YFA
XC9142C48CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.8V±2%, +CE (compl. out discon.)
YFB
2SC4932-B
Renessas
SOT-323
NPN transistor
AF, GP, 20V, 500mA, 150mW, B=135..270, 300MHz
YFB
XC9142C49C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.9V±2%, +CE (compl. out discon.)
YFB
XC9142C49C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.9V±2%, +CE (compl. out discon.)
YFB
XC9142C49CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 4.9V±2%, +CE (compl. out discon.)
YFC
2SC4932-C
Renessas
SOT-323
NPN transistor
AF, GP, 20V, 500mA, 150mW, B=200..400, 300MHz
YFC
XC9142C50C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.0V±2%, +CE (compl. out discon.)
YFC
XC9142C50C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.0V±2%, +CE (compl. out discon.)
YFC
XC9142C50CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.0V±2%, +CE (compl. out discon.)
YFD
2SC4932-D
Renessas
SOT-323
NPN transistor
AF, GP, 20V, 500mA, 150mW, B=300..600, 300MHz
YFD
XC9142C51C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.1V±2%, +CE (compl. out discon.)
YFD
XC9142C51C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.1V±2%, +CE (compl. out discon.)
YFD
XC9142C51CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.1V±2%, +CE (compl. out discon.)
YFE
XC9142C52C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.2V±2%, +CE (compl. out discon.)
YFE
XC9142C52C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.2V±2%, +CE (compl. out discon.)
YFE
XC9142C52CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.2V±2%, +CE (compl. out discon.)
YFF
XC9142C53C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.3V±2%, +CE (compl. out discon.)
YFF
XC9142C53C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.3V±2%, +CE (compl. out discon.)
YFF
XC9142C53CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.3V±2%, +CE (compl. out discon.)
YFH
XC9142C54C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.4V±2%, +CE (compl. out discon.)
YFH
XC9142C54C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.4V±2%, +CE (compl. out discon.)
YFH
XC9142C54CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.4V±2%, +CE (compl. out discon.)
YFK
XC9142C55C0R-G
Torex Semiconductor
SOT-25
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.5V±2%, +CE (compl. out discon.)
YFK
XC9142C55C0R-G
Torex Semiconductor
WLP-6-01
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.5V±2%, +CE (compl. out discon.)
YFK
XC9142C55CER-G
Torex Semiconductor
USP-6C
DC/DC voltage converter IC
PWM step-up, 1.2MHz, 5.5V±2%, +CE (compl. out discon.)