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 '3W'

Marking
Name
Manufacturer/Case
Function
3W
BC857BT
Diodes
SOT-416
PNP transistor
GP, 50V, 100mA, 250mW, B=220..475, >100MHz
3W
CH483KPT
Chenmko Enterprise
SOT-343
Diode
Dual, Schottky barrier, 30V, 200mA, Vf<0.5V(200mA)
3W
FMMTA12
Zetex
SOT-23
NPN darlington
GP, 40V, 300mA, 350mW, B=50..150, 200MHz
3W
MM3Z68V
Secos
SOD-323
Zener diode
64..72V, Izt=2mA, Zzt=240, 200mW
3W
R1210N331C
Ricoh
SOT-23-5
DC/DC voltage converter IC
PWM step-up, 3.3V, 100kHz
3W
R3117K271C
Ricoh
DFN1010-4
Voltage detector IC
2.7V±1%, -Reset PPO, Sense
3W
RP101K221B
Ricoh
DFN1612-4
Linear voltage regulator IC
LDO, LN, 2.2V±0.8%, 300mA, +CE
3W
RP112K291D
Ricoh
DFN1010-4
Linear voltage regulator IC
LDO, 2.9V±1%, 150mA, +CE, CL
3W
RP173K291B
Ricoh
DFN1010-4
Linear voltage regulator IC
LDO, 2.9V±1%, 150mA, +CE
3W
RQ5RW39CA
Ricoh
SC-82AB
Linear voltage regulator IC
LDO, 3.9V±2%, 150mA
3W
TDZ16J
NXP Semiconductors
SOD-323F
Zener diode
15.70..16.30V, Izt=5mA, Zzt=20, 500mW
3W1
STZ8130A

SOD-323
Zener diode
12.4..12.99V, Izt=5mA, Zzt=35, 300mW
3WS
2SD1979-S
Panasonic
SOT-323
NPN transistor
AF, 50V, 500mA, 150mW, 80MHz, B=500..1500
3WT
2SD1979-T
Panasonic
SOT-323
NPN transistor
AF, 50V, 500mA, 150mW, 80MHz, B=800..2500