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See Product Specifications
| Part Number: | AS3955-ASWF-I4 | 
| Category: | RF/IF and RFID | 
| Subcategory: | RFID, RF Access, Monitoring ICs | 
| Manufacturer: | ams | 
| Packaging: | Tape & Reel (TR) | 
| Product Status: | Active | 
| Type: | RFID Transponder | 
| Frequency: | 13.58MHz | 
| Standards: | ISO 14443, NFC | 
| Interface: | I²C | 
| Voltage - Supply: | 1.65V ~ 5.5V | 
| Operating Temperature: | -40°C ~ 125°C | 
| Mounting Type: | Surface Mount | 
| Package / Case: | 12-UFBGA, WLCSP | 
| Supplier Device Package: | 12-WLCSP (2.2x1.4) |