Download the B0509S-1W datasheet PDF.
This datasheet also covers the B0503S-1W variant, as both devices belong to the same single output miniature sip/dip family and are provided as variant models within a single manufacturer datasheet.
B_S-1W & B_D-1W Series
1W, FIXED INPUT ISOLATED & UNREGULATED SINGLE OUTPUT MINIATURE SIP/DIP PACKAGE
RoHS PART NUMBER SYSTEM B0505S-1W
Rated Power Package Style Output Voltage Input Voltage Product.