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 '1W'

Marking
Name
Manufacturer/Case
Function
1W
2SC5019
Panasonic
SOT-89
NPN transistor
UHF, LN, 15V, 80mA, 1W, B=80..250, 6GHz
1W
BF821
Continental Device India
SOT-23
PNP transistor
Vid, 300V, 50mA, 250mW, B>50, >60MHz
1W
FMMT3903
Zetex
SOT-23
NPN transistor
GP, 60V, 200mA, 330mW, B=50..150, >250MHz
1W
MM3Z56V
Secos
SOD-323
Zener diode
52..60V, Izt=2mA, Zzt=200, 200mW
1W
R1210N311C
Ricoh
SOT-23-5
DC/DC voltage converter IC
PWM step-up, 3.1V, 100kHz
1W
R3117K271A
Ricoh
DFN1010-4
Voltage detector IC
2.7V±1%, -Reset ODO, Sense
1W
R5326N021A
Ricoh
SOT-23-6
Linear voltage regulator IC
LDO, Dual out, Vout1/Vout2=1.5V/2.8V±1%, 150mA, +CE
1W
RP112K291B
Ricoh
DFN1010-4
Linear voltage regulator IC
LDO, 2.9V±1%, 150mA, +CE
1W
RP173K291A
Ricoh
DFN1010-4
Linear voltage regulator IC
LDO, 2.9V±1%, 150mA, -CE
1W
UNRF2A3
Panasonic
ML3
NPN transistor
Sw, 50V, 80mA, 100mW, 150MHz, R1/R2=47k/47k
1W-
BAP51-05W
Philips
SOT-323
PIN diode
Dual, RF, 50V, 50mA, 240mW, 0.35pF, 2.5(10mA/100MHz)
1W1
STZ8043C

SOD-323
Zener diode
4.31..4.54V, Izt=5mA, Zzt=130, 300mW
1Wp
BF821

SOT-23
PNP transistor
Vid, 300V, 50mA, 250mW, B>50, >60MHz
1Wt
BF821
Philips
SOT-23
PNP transistor
Vid, 300V, 50mA, 250mW, B>50, >60MHz
1Wt
BF822W
Philips
SOT-323
NPN transistor
Vid, 250V, 100mA, 200mW, B>50, >60MHz
1WW
BF821

SOT-23
PNP transistor
Vid, 300V, 50mA, 250mW, B>50, >60MHz