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| Part Number | IR21571PBF | IR21571 | IR21571S | IR21571STR | IR21571SPBF |
| Manufacturer | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Series | - | - | - | - | - |
| Package/Case | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) |
| Packaging | Bulk | Tube | Tube | Tape & Reel (TR) | Tube |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Discontinued at Digi-Key |
| Type | Ballast Controller | Ballast Controller | Ballast Controller | Ballast Controller | Ballast Controller |
| Frequency | 45.5kHz ~ 50.5kHz | 45.5kHz ~ 50.5kHz | 45.5kHz ~ 50.5kHz | 45.5kHz ~ 50.5kHz | 45.5kHz ~ 50.5kHz |
| Voltage - Supply | 10.5V ~ 16.5V | 10.5V ~ 16.5V | 10.5V ~ 16.5V | 10.5V ~ 16.5V | 10.5V ~ 16.5V |
| Current - Supply | 5.5 mA | 5.5 mA | 5.5 mA | 5.5 mA | 5.5 mA |
| Current - Output Source/Sink | - | - | - | - | - |
| Dimming | No | No | No | No | No |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C |
| Grade | - | - | - | - | - |
| Qualification | - | - | - | - | - |
| Mounting Type | Through Hole | Through Hole | Surface Mount | Surface Mount | Surface Mount |
| Supplier Device Package | 16-DIP | 16-DIP | 16-SOIC | 16-SOIC | 16-SOIC |
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