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| Part Number | L6221AD | L6221AS | L6221CD |
|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Status | Obsolete | Obsolete | Obsolete |
| Transistor Type | 4 NPN Darlington (Quad) | 4 NPN Darlington (Quad) | 4 NPN Darlington (Quad) |
| Current - Collector (Ic) (Max) | 1.8A | 1.8A | 1.2A |
| Voltage - Collector Emitter Breakdown (Max) | 50V | 50V | 60V |
| Vce Saturation (Max) @ Ib, Ic | 1.6V @ 1.8A | 1.6V @ 1.8A | - |
| Current - Collector Cutoff (Max) | - | - | - |
| DC Current Gain (hFE) (Min) @ Ic, Vce | - | - | - |
| Power - Max | 1W | 1W | - |
| Frequency - Transition | - | - | - |
| Operating Temperature | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount | Through Hole | Surface Mount |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | - | 20-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 20-SO | 16-PowerDIP | 20-SO |
