Does anyone here knows what are other replacement for diode RL257?

 

PART REPLACEMENT IS DIFFICUT BECAUSE OF iNVENTORYS,THINGS ARE
MADE TO THROW AWAY,NO BODY STOCKS PART ANY MORE.YOU HAVE TO GET LUCKY
THAT SOME ONE HAS DIRECT KNOWLEDGE OF YOUR CONCERN GOOGLE IS
FAILING IN FINDING PART REPLACEMENT,BECAUSE THERE ARE NOT VERY MANY.
MOST SUPPLERS DON'T WANT TO SELL TO YOU AT ALL.tHIS IS BILLON
DOLLAR MARKET,YOU DON'T MAKE DIFFERENTS.

 

You could use 1N5408's.
Same voltage rating, 3A instead of 2.5A.
Newark stocks them for under $0.20 US ea.
http://www.newark.com/jsp/search/productdetail.jsp?SKU=58K9608&CMP=AFC-OP

Mouser also stocks them:
http://www.mouser.com/Search/Refine.aspx?N=254459+1323043&Keyword=1n5408&Ns=Pricing|0&FS=True

 

thanks for all your help.