Need Help Finding a El 817 B926 Photocoupler On Digikey

[70JUDGE]

I am trying to find a component called a photocoupler on digikey,but I am not having any luck.I have tried all the combinations of the letters,and numbers written on it,but I can't seem to find one.It says EL 817 B926.Any help is greatly appreciated.Thank You very much!

Tyler

[Dgtech]

Re: Need Help Finding a El 817 B926 Photocoupler On Digikey

Photocouplers are the same as Opto-isolators aren't they? If so, You might find them under that. If you can find a data sheet for the part that you have, then look up an equivalent part.

[Toasty]

Re: Need Help Finding a El 817 B926 Photocoupler On Digikey



Mouser has them:

http://www.mouser.com/Search/Refine.aspx?Keyword=el817

[retiredcaps]

Re: Need Help Finding a El 817 B926 Photocoupler On Digikey

findchips.com will search about 20 or so vendors for you.

http://www.findchips.com/avail?part=EL817

[Toasty]

Re: Need Help Finding a El 817 B926 Photocoupler On Digikey

Yup, but Mouser's the cheapest -

- Future is cheaper by the piece, but $9 FedEx Ground. No Priority Mail.
- Arrow is cheaper yet, but minimum order is $25 and S/H is $8.

All the Intersil numbers are the WRONG device (op-amp).

Cheers!
Toast

[PlainBill]

Re: Need Help Finding a El 817 B926 Photocoupler On Digikey

It appears the following part numbers from Digi-key are matches for the original. If the row to row lead spacing is .3" this should work or if the row to row lead spacing is .4" use this one.

PlainBill

[Tvbob]

Re: Need Help Finding a El 817 B926 Photocoupler On Digikey

EBAY is the place to go first, 817 is the key in the search.
ebay has 10 photo coupler's $5.00 free shipping

[Dgtech]

Re: Need Help Finding a El 817 B926 Photocoupler On Digikey

Wow, ten!!! Just what we all need.

[PlainBill]

Re: Need Help Finding a El 817 B926 Photocoupler On Digikey

Wow, ten!!! Just what we all need.

And coming all the way from China!

PlainBill

[Longbow]

Re: Need Help Finding a El 817 B926 Photocoupler On Digikey

My question is this: are you repairing a power supply, and isolated the fault to the opto-coupler? If so, how did you determine that this part was faulty?

Here is some information that might be helpful. SMPS use opto-couplers in the negative feedback loop in order to maintain isolation between primary and secondary. The good news is that they are all very similar. Being in the feedback loop, the part will "self-adjust" and thus the specs are not critical. Desolder one from a spare parts board if you have doubts.

One side of the coupler is an LED. That can easily be tested with your multimeter. The other side is an opto-transistor. The part operates at low voltage, low current, and low frequency. The failure rate is very low.