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 components with code 'B'

Marking
Name
Manufacturer/Case
Function
B
1SS388PT
Chenmko Enterprise
SOD-523
Diode
SBD, 40V, 100mA, Vf<0.6V(50mA)
B
3SK302
Panasonic
SOT-143
MOSFET n-type
Dual gate, UHF-amp, 15V, ±30mA, 150mW, Idss=0..10mA
B
3SK306
Panasonic
SOT-343
MOSFET n-type
Dual gate, UHF-amp, 15V, ±30mA, 150mW, Idss=0..10mA
b
AX6901BA
AXElite Technology
SC-70
Voltage detector IC
4.38V±1.5%, -Reset PPO
B
BAS16-03W
Infineon Technologies
SOD-323
Diode
Sw, Fast, 80V, 200mA, 200mW, <6ns
B
BAT15-098
Siemens
SOD-123
Diode
Schottky, 4V, 110mA, Vf<0.32V, <0.35pF
B
BB555-02V
Infineon Technologies
SC-79
Capacitance diode
UHF TV-tuning, 30V, 20mA, 2.1..18.7pF(28..1V)
b
CH3904T1PT
Chenmko Enterprise
FBPT-523
NPN transistor
AF, Sw, 40V, 200mA, B=100..300, 300MHz
b
CH3904TPT
Chenmko Enterprise
SOT-416
NPN transistor
AF, Sw, 40V, 200mA, B=100..300, 300MHz
B
CH520S-30PT
Chenmko Enterprise
SOD-523
Diode
SBD, 30V, 200mA, Vf<0.6V(200mA)
B
CMBT3904E
Central Semiconductor
SOT-923
NPN transistor
GP, 60V, 600mA, 100mW, B=100..100, 300MHz
B
ELM7523CCB
ELM Technology
SC-82AB
Voltage detector IC
2.3V±2%, +Reset PPO
B
ELM7523CEB
ELM Technology
SC-70
Voltage detector IC
2.3V±2%, +Reset PPO
B
ELM7523NCB
ELM Technology
SC-82AB
Voltage detector IC
2.3V±2%, +Reset ODO
B
ELM7523NEB
ELM Technology
SC-70
Voltage detector IC
2.3V±2%, +Reset ODO
B
EP05Q06
Nihon Inter Electronics
SOD-123
Diode
SBR, 60V, 500mA, Vf<0.62V(500mA)
B
FSS14M
Fagor Electronica
MicroSMA
Diode
SBR, 40V, 1A, Vf<0.55V(1A)
B
GBLC08I
Protek Devices
SOD-323
Transient voltage supressor
Vrwm=8V, 2A, 350W(1ms), 0.6pF
B
MA2H736
Panasonic
SOD-106
Diode
SBR, HF, 40V, 1A, Vf<0.55V(1A), 50pF, 30ns
b
MMSZ5229BPT
Chenmko Enterprise
SOD-523
Zener diode
4.3V±5%, Izt=20mA, Zzt=22, 225mW
B
MMSZ5251BPT
Chenmko Enterprise
SOD-523
Zener diode
22V±5%, Izt=5.6mA, Zzt=29, 225mW
B
NT353
AUK Semiconductor
SOT-923
NPN transistor
Sw, 20V, 50mA, 50mW, 200MHz, R1/R2=10k/10k
B
RB520S-30
Rohm
SOD-523
Diode
SBR, 30V, 200mA, Vf<0.6V(200mA)
B
Si1013X
Siliconix
SC-89
MOSFET p-type
T-FET, Sw, 20V, 275mA, 250mW, <1.2(350mA), 5/35ns
B
TVS100W5V0D
Diodesemi Technology
SOD-923
Transient voltage supressor
Vrwm=5.0V, Vbr=6.2V, 8.7A, 100W(1ms)
B
UNRL113
Panasonic
ML4
PNP transistor
Sw, 50V, 100mA, 150mW, 80MHz, R1/R2=47k/47k
B
UNRL213
Panasonic
ML4
NPN transistor
Sw, 50V, 100mA, 150mW, 150MHz, R1/R2=47k/47k
B
XMFP2-M3
Murata Manufacturing
SOT-89
FET n-type
GaAs, UHF, 6V, 700mA, 2.5W, Idss=400mA(3V), 6GHz
B
XMFS3-M1
Murata Manufacturing
SOT-143
FET n-type
GaAs, UHF, 5V, 60mA, 200mW, Idss=15mA(3V), 6GHz