marking code 4MU3 ,do you know what this device is?

[theresa]

Hi , guys
marking code 4MU3 ,do you knok what this device is?

 

[davenn]

Hi , guys
marking code 4MU3 ,do you knok what this device is?

View attachment 59530

I dont see a 3 on the device in your photo ??
4MUU
with 4MU most likely the type number
searching on that didnt bring up any 3 pin devices just 5 pin ones which were voltage regulators

So u8nless some one else can help ya may be ooutta luck

 

[steve1418]

Hi , guys
marking code 4MU3 ,do you knok what this device is?

View attachment 59530

May be LM4040C25IDBZR 2.5-V Precision Micropower Shunt Voltage Reference, 0.5% accuracy SOP-23-3, seems have two smdcode 4MU3 4MUU , the markingcode book ,hope to help