Source for Dallas/Maxim DS1236AS-5 MicroManager chips

Partminer ceased in 2012 (sold to IHS apparently) and putting your number into Donberg got no results.

There was another, but I forget the name.

The one that slipped my memory is US Bid.

No matches there either!

Thanks for your help, Ian. I have a query in with a USA company I found called 4 Star Electronics, since I found a couple of positive reviews on them.

All the Asian companies I enquired with claim to have heaps of these chips available, but they worry me.

I also found a company called IC Electronic Components who sell "refurbs", which I assume are IC's recovered from circuit boards. They also worry me!

Regards, Peter

May I ask what you need them for?

For one final batch of 100 pieces of a 15-year-old design. It's a device used in time and attendance applications.

A new design would be technically preferable, but not financially viable, given the development costs.

Peter

The only exact match here is "BasicEParts":

It shows that they only have 14, but it might be worth asking. They might be a bit of a worry too though.

Ah, just discovered that clicking on the links goes to "part not found". Nevermind.

One well known company bought a few hundred thousand microprocessors at a "good price", after a flood of complaints from customers they found that the packages were devoid of any silicon.

Organised crime has a simple choice - counterfeiting is a lot less jail time than drug running.

If you can still find a good archive of the data sheets, it might be worth studying the part number suffixes. Sometimes its just a minor package detail that makes no difference to the electrical characteristics.

Found this:

I'll let you be the judge of whether they're trustworth.