Vishay NFR25 , NFR25H added color band.
The NFR25 is rated for .33W and 250V , and the NFR25H is rated .5W and 350V these parts are the same size so Vishay added a 5th color band to distinguish between them .
Active Digikey part numbers https://www.digikey.com/short/z29pph
For the NFR25 the color band is Violet
For the NFR25H the color band is White
Data sheet , https://www.vishay.com/docs/28737/nfr25.pdf