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| PartNumber | FSA550UCX | FSA551UCX | FSA550BUCX |
| Description | Analog Switch ICs DEPLETION MODE SWITCH | Analog Switch ICs DEPLETION MODE SWITCH | Analog Switch ICs Depletion Mode Switch |
| Manufacturer | ON Semiconductor | ON Semiconductor | ON Semiconductor |
| Product Category | Analog Switch ICs | Analog Switch ICs | Analog Switch ICs |
| RoHS | Y | Y | Y |
| Number of Switches | 2 Switch | 2 Switch | 2 Switch |
| Configuration | 2 x 4PST | 2 x SPST | 2 x 4PST |
| On Resistance Max | 800 mOhms | 600 mOhms | 800 mOhms |
| Switch Voltage Max | 2 V | 3 V | 2 V |
| On Time Max | 120 ns | 445 us | 120 ns |
| Off Time Max | 160 us | 175 us | 160 us |
| Operating Supply Voltage | 1.6 V to 3 V | 1.5 V to 3 V | 1.6 V to 3 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | WLCSP-12 | WLCSP-9 | WLCSP-12 |
| Packaging | Reel | Reel | Reel |
| Series | FSA550 | FSA551 | FSA550 |
| Supply Type | Single Supply | Single Supply | Single Supply |
| Brand | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild |
| Supply Current Max | 70 uA | 120 uA | 70 uA |
| Product Type | Analog Switch ICs | Analog Switch ICs | Analog Switch ICs |
| Factory Pack Quantity | 3000 | 3000 | 3000 |
| Subcategory | Switch ICs | Switch ICs | Switch ICs |
| Supply Voltage Max | 3 V | 3 V | 3 V |
| Supply Voltage Min | 1.6 V | 1.5 V | 1.6 V |
| Switch Continuous Current | 350 mA | 350 mA | 350 mA |
| Unit Weight | 0.002222 oz | 0.001317 oz | 0.002222 oz |