I needed LT1086 adjustable for my project so I bought these

The seller sent me LT1086CM-3.3 which clearly is 3.3V.
But now I am a bit confused. The data sheet does not say which number type is the adjustable type. Any number after like "3.3, 12, 3.6, or 5" indicates fixed type.

Problem is I am not sure which number is the adjustable types.

I am thinking just " LT1086CM" means the adjustable type. Am I right ?

 

Looks like you are correct. The LT1086 (no suffix) is the adjustable version.

See page 12 of this data sheet: http://cds.linear.com/docs/en/datasheet/1086ffs.pdf

Buyer beware when you buy parts.

 

Yup, he sent you the wrong parts (not as specified on the website).

 

Great ! Thanks Guys.
Now I can sue him...
You know he is arguing with me.
I will open a dispute tomorrow.