This is a 
15335327BA250 UV Emitter , UV-C, 275 nm, AlGaN, Top View SMD, 3.55mm x 3.55mm, WL-SUMW Series product from WURTH ELEKTRONIK with the model number 15335327BA250
Other details
| Brand | WURTH ELEKTRONIK | 
| Part Number | 15335327BA250 | 
| Quantity | Each (Supplied on Cut Tape) | 
| Technical Data Sheet EN |  | 
| Product Change Notice EN |  | 
| Application Note EN |  | 
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