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 '3R'

Marking
Name
Manufacturer/Case
Function
3R
2SC4497-R
Toshiba
SC-59
NPN transistor
HV, 300V, 100mA, 200mW, B=30..90, 70MHz
3R
2SD5580
Panasonic
SOT-323
NPN transistor
HF-osc/Sw, 15V, 50mA, 150mW, B=100..350, 1.1GHz
3R
CH481KPT
Chenmko Enterprise
SOT-343
Diode
Dual, Schottky barrier, 30V, 200mA, Vf<0.5V(200mA)
3R
IMP161REUS
IMP
SOT-143
Voltage detector IC
2.63V±1.5%, -Reset ODO, -MR
3R
MMBT5751
National Semiconductor
SOT-23
PNP transistor
Sw, 15V, 200mA, 225mW, B=50..120, 15/20ns
3R
PDTA124EEF
NXP Semiconductors
SOT-490
PNP transistor
Sw, 50V, 100mA, 250mW, R1/R2=22k/22k
3R
PDTA124TE
NXP Semiconductors
SOT-416
PNP transistor
Sw, 50V, 100mA, 150mW, R1=22k
3R
R1210N331A
Ricoh
SOT-23-5
DC/DC voltage converter IC
PWM step-up, 3.3V, 35..100kHz
3R
R3117K221C
Ricoh
DFN1010-4
Voltage detector IC
2.2V±1%, -Reset PPO, Sense
3R
R3131N29BA3
Ricoh
SOT-23
Voltage detector IC
2.9V±1.5%, +Reset PPO, 100ms
3R
R3133Q45EA
Ricoh
SOT-143
Voltage detector IC
4.5V±1.5%, +Reset PPO, -MR
3R
RP101K331B
Ricoh
DFN1612-4
Linear voltage regulator IC
LDO, LN, 3.3V±0.8%, 300mA, +CE
3R
RP112K251D
Ricoh
DFN1010-4
Linear voltage regulator IC
LDO, 2.5V±1%, 150mA, +CE, CL
3R
RP173K251B
Ricoh
DFN1010-4
Linear voltage regulator IC
LDO, 2.5V±1%, 150mA, +CE
3R
RQ5RW34CA
Ricoh
SC-82AB
Linear voltage regulator IC
LDO, 3.4V±2%, 150mA
3R
SRA2203E
AUK Semiconductor
SOT-523
PNP transistor
Sw, 50V, 100mA, 150mW, 200MHz, R1/R2=22k/22k
3R
SRA2203EF
AUK Semiconductor
SOT-523F
PNP transistor
Sw, 50V, 100mA, 150mW, 200MHz, R1/R2=22k/22k
3R
SRA2203U
AUK Semiconductor
SOT-323
PNP transistor
Sw, 50V, 100mA, 200mW, 200MHz, R1/R2=22k/22k
3R
SRA2203UF
AUK Semiconductor
SOT-323F
PNP transistor
Sw, 50V, 100mA, 200mW, 200MHz, R1/R2=22k/22k
3R
TDZ10J
NXP Semiconductors
SOD-323F
Zener diode
9.80..10.20V, Izt=5mA, Zzt=10, 500mW
3R
XC6127N39DNR
Torex Semiconductor
SSOT-24
Voltage detector IC
3.9V±0.8%, -Reset ODO, -MR, Rt=400ms
3R
XC6217D2327R-G
Torex Semiconductor
USPN-4
Linear voltage regulator IC
LDO, 2.3V±2%, 200mA, +CE, CL
3R
XC6217D232NR
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 2.3V±2%, 200mA, +CE, CL
3R
XC6223A381NR-G
Torex Semiconductor
SSOT-24
Linear voltage regulator IC
LDO, 3.8V±1%, 300mA, +CE
3R
XC6223D3219R-G
Torex Semiconductor
USPQ-4B03
Linear voltage regulator IC
LDO, 3.2V±1%, 300mA, +CE, CL, PDR
3R
XC6229H37B1R-G
Torex Semiconductor
BGA-4
Linear voltage regulator IC
LDO, 3.75V±1%, 300mA, +CE, ICP
3R0
XC6104E531MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.1V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3R1
STZ8120A

SOD-323
Zener diode
11.4..11.96V, Izt=5mA, Zzt=30, 300mW
3R1
XC6104E532MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.2V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3R2
XC6104E533MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.3V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3R3
XC6104E534MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.4V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3R4
XC6104E535MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.5V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3R5
XC6104E536MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.6V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3R6
XC6104E537MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.7V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3R7
XC6104E538MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.8V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3R8
XC6104E539MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.9V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3R9
XC6104E540MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.0V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RA
XC6104E541MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.1V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RB
XC6104E542MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.2V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RC
XC6104E543MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.3V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RD
XC6104E544MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.4V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RE
XC6104E545MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.5V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RF
XC6104E516MR
Torex Semiconductor
SOT-25
Voltage detector IC
1.6V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RF
XC6104E546MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.6V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RH
XC6104E517MR
Torex Semiconductor
SOT-25
Voltage detector IC
1.7V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RH
XC6104E547MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.7V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RK
XC6104E518MR
Torex Semiconductor
SOT-25
Voltage detector IC
1.8V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RK
XC6104E548MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.8V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RL
XC6104E519MR
Torex Semiconductor
SOT-25
Voltage detector IC
1.9V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RL
XC6104E549MR
Torex Semiconductor
SOT-25
Voltage detector IC
4.9V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RM
XC6104E520MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.0V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RM
XC6104E550MR
Torex Semiconductor
SOT-25
Voltage detector IC
5.0V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RN
XC6104E521MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.1V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RP
XC6104E522MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.2V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RR
XC6104E523MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.3V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RS
XC6104E524MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.4V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RT
XC6104E525MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.5V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RU
XC6104E526MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.6V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RV
XC6104E527MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.7V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RX
XC6104E528MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.8V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RY
XC6104E529MR
Torex Semiconductor
SOT-25
Voltage detector IC
2.9V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms
3RZ
XC6104E530MR
Torex Semiconductor
SOT-25
Voltage detector IC
3.0V±2%, Hst, ±Reset PPO, Wt=400ms, Rt=200ms