Question about an LED bulb component

[hayze]

I took this LED bulb apart just as an exploratory whim, and I'm wondering what this component is. There is no striped resistor like I'm used to seeing. Rather, there is a black component that I've seen before that seems to be used instead of resistors sometimes. Take a look at the pictures below. What is it? What does it do? How does it replace the usual resistor? I don't know a ton about electronics, but I'm interested in this.

Also, there is very tiny text on it that reads "FD8828"

Pictures of it:

Thanks everyone

 

[Lynx_Arc]

it may be a linear regulator.

 

[AnAppleSnail]

It's a transistor-type thing. Probably drops 12v down to a lower voltage (For the LED), and maybe even sets a particular current output at a lower voltage.

 

[Lynx_Arc]

try googling the number on the case of the component, I cannot read it from the picture.

 

[hayze]

Okay, thanks for the input

The number reads FD8828

I'm going to look into it more. If anyone has any more input, then I'd be happy to hear.

Thanks again everyone

 

[Lynx_Arc]

It's a transistor-type thing. Probably drops 12v down to a lower voltage (For the LED), and maybe even sets a particular current output at a lower voltage.

Okay, thanks for the input

The number reads FD8828

I'm going to look into it more. If anyone has any more input, then I'd be happy to hear.

Thanks again everyone

doesn't register anywhere I know, a mystery for sure I guess you would have to see what the circuit board wiring is and in/out to it.

 

[bhaskar_bl]

Re: Question about an LED driver circuit

It's a transistor-type thing. Probably drops 12v down to a lower voltage (For the LED), and maybe even sets a particular current output at a lower voltage.

Any one will healp me to make high power led bulb with 9w,I need help for led driver circuit and its component list.

 

[hayze]

Oh well, its not a huge deal for me to know what the component is. I also found nothing on the 'FD8828' search. Anyway, I appreciate the efforts and inputs thus far. Thanks guys

The thing about this LED bulb is that it tends to last a heck of a long time compared with other commercially available LED bulbs that burn out in weeks. This bulb lasted about 2 years in my tag lights before strobing out on me. The other bulb is still running fine.

 

[Lynx_Arc]

Oh well, its not a huge deal for me to know what the component is. I also found nothing on the 'FD8828' search. Anyway, I appreciate the efforts and inputs thus far. Thanks guys

The thing about this LED bulb is that it tends to last a heck of a long time compared with other commercially available LED bulbs that burn out in weeks. This bulb lasted about 2 years in my tag lights before strobing out on me. The other bulb is still running fine.

If the other bulbs were just resistored and this one has a linear regulator that would explain it for sure.

 

[Dave_H]

Okay, thanks for the input

The number reads FD8828

I'm going to look into it more. If anyone has any more input, then I'd be happy to hear.

Thanks again everyone

It is likely a regulator as suggested or a power MOSFET. The
number scheme suggests Fairchild, and often components are
"house numbered" so the average person can't decode it, to
prevent casual duplication of the circuit. It may be a custom
part as well.

Dave