max1761 substitute ?

[petehall347]

any substitute for this ?
or where can i buy one for the right price ?

[stj]

Re: max1761 substitute ?

i'll check my small stack of laptop scrap if you want.

[petehall347]

Re: max1761 substitute ?

i'll check my small stack of laptop scrap if you want.

yes please ..i checked mine but no joy ..i do have a large pile of working laptops but no idea if any will have one inside .

[mon2]

Re: max1761 substitute ?

Order a free sample off the MAXIM (aka Analog) website.

https://www.maximintegrated.com/en/p...#order-quality

[petehall347]

Re: max1761 substitute ?

Order a free sample off the MAXIM (aka Analog) website.

https://www.maximintegrated.com/en/p...#order-quality

wont let me have a sample ..a box flashes up for a second saying sorry something .
and now they have my email ...

[mon2]

Re: max1761 substitute ?

Hmm. Ok. Analog / Maxim are good people. We, as a company have used very high volumes of Maxim transceivers and now about to start using their latest digital isolators.

The requested Maxim part is showing in stock @ Mouser. Can you source from them ?

Try also to check other agents with the FINDCHIPS search engine for parts.

[petehall347]

Re: max1761 substitute ?

Hmm. Ok. Analog / Maxim are good people. We, as a company have used very high volumes of Maxim transceivers and now about to start using their latest digital isolators.

The requested Maxim part is showing in stock @ Mouser. Can you source from them ?

Try also to check other agents with the FINDCHIPS search engine for parts.

yes i looked on mouser but have to spend £33 or pay extortionate delivery costs like more than double the item price . it works out buying 1 and paying for almost 4 .. i could do with going on someone else's order then them sending it to me .. i don't mind paying that way . be much easier if rs had it in stock then its free shipping .

[petehall347]

Re: max1761 substitute ?

mouser need shooting ..it just cost over 40 quid for a 5 quid part even though its free shipping for spending 33 quid .. . i had to order other things that i don't really need .. suppose it better than 3 grand for a motherboard . it best bloody work . am praying the stuff that got hit with high voltage has high voltage shutdown .

[petehall347]

Re: max1761 substitute ?

having big trouble getting this chip soldered in because of damaged pads on the board plus the big trouble caused by using my solder sucker to remove excess solder .i managed to bend some pins with it recoiling . thinking i might have to find a breakout board and solder wires to the best places on the pcb . they of course don't leave much room between the legs on these chips .its far to easy to short 2 together .

[stj]

Re: max1761 substitute ?

this is why you have desoldering braid.

[petehall347]

Re: max1761 substitute ?

its all good because i had a spare chip so decided to just use hot air and to not add any more solder .. its now booting up although crashing after a while then booting up after 30 secs rinse repeat . then i squirted freeze spray in the general area of the processor and it now stays on longer but complains about things not plugged in so next thing is install back in the machine and see what happens ..

[sam_sam_sam]

Re: max1761 substitute ?

this is why you have desoldering braid.

Where do you find good quality Desoldering braid because the stuff I have used has been for the most part has been crap

[diif]

Re: max1761 substitute ?

Chemtronics make excellent braid. I also use low melt solder to avoid damaging tracks and aid make component removal very easy.

[stj]

Re: max1761 substitute ?

yep, chemtronics is the good one.
and i used to get a swiss one called "spirig" i think, but not seen that in years.

[petehall347]

Re: max1761 substitute ?

have never got on with the stuff myself

[diif]

Re: max1761 substitute ?

have never got on with the stuff myself

Add low melt solder, slide off/remove the component with ease/no track damage and then clean up the left over solder with braid.

[petehall347]

Re: max1761 substitute ?

the tracks are proper damaged from when the chip got knocked . i managed to carefully straighten them out and fitted new chip .

[diif]

Re: max1761 substitute ?

the tracks are proper damaged from when the chip got knocked . i managed to carefully straighten them out and fitted new chip .

You also mentioned they were damaged by using the solder sucker. That is when braid should be used, to clean the pads of the old solder/low melt solder.

[petehall347]

Re: max1761 substitute ?

You also mentioned they were damaged by using the solder sucker. That is when braid should be used, to clean the pads of the old solder/low melt solder.

was mainly the pins on the chip got bent and solder stuck to them ..if i ever need to use it i will get it straightened up .

[petehall347]

Re: max1761 substitute ?

looks like i managed to damage it ..in circuit cs1 is dead short to out1 . all i did was try a different 10 uf cap ..
was trying to figure out why the 3.3v was a little high like 3.38v and rising to 3.41v with the unit shutting itself down .
now the out voltage is 4.4v .