The TechForum Cross Reference category is for parts that Digi-Key does not sell or parts that have gone obsolete. Our Engineers and Techs have reviewed the specifications for these parts and made a recommendation for a replacement. Please review the suggested part to ensure it will work for your application.
I would like to know what replaces that part number.
Welcome to the Technical Forum. I found an alternative. It is part number 1SMAF4777A. It is a Marketplace product which would mean it would ship from Rectron when you buy it on the Digi-Key Web site. The bad part is that it does not appear they have stock and no lead time is available. Though I wanted to list it as it is not obsolete like your original part. It is just not something there is a lead time . The link to the data sheet for the Rectron part is : untitled (rectron.com)
I am sorry. This was the only one I found for an alternative.
While performing some maintenance I wandered across this post. I noticed that the part number that was offered does not seem to go well into our website now. While I am unsure why that is, I thought I would take a second look at what parts were available.