| PartNumber | FQAF5N90 | FQAF6N90 | FQAF6N80 |
| Description | MOSFET 900V N-Channel QFET | MOSFET 900V N-Channel QFET | MOSFET 800V N-Channel QFET |
| Manufacturer | ON Semiconductor | ON Semiconductor | ON Semiconductor |
| Product Category | MOSFET | MOSFET | MOSFET |
| RoHS | Y | Y | Y |
| Technology | Si | Si | Si |
| Mounting Style | Through Hole | Through Hole | Through Hole |
| Package / Case | TO-3PN-3 | TO-3PN-3 | TO-3PN-3 |
| Number of Channels | 1 Channel | 1 Channel | 1 Channel |
| Transistor Polarity | N-Channel | N-Channel | N-Channel |
| Vds Drain Source Breakdown Voltage | 900 V | 900 V | 800 V |
| Id Continuous Drain Current | 4.1 A | 4.5 A | 4.4 A |
| Rds On Drain Source Resistance | 2.3 Ohms | 1.9 Ohms | 1.95 Ohms |
| Vgs Gate Source Voltage | 30 V | 30 V | 30 V |
| Minimum Operating Temperature | - 55 C | - 55 C | - 55 C |
| Maximum Operating Temperature | + 150 C | + 150 C | + 150 C |
| Pd Power Dissipation | 90 W | 96 W | 90 W |
| Configuration | Single | Single | Single |
| Channel Mode | Enhancement | Enhancement | Enhancement |
| Packaging | Tube | Tube | Tube |
| Height | 20.1 mm | 20.1 mm | 20.1 mm |
| Length | 16.2 mm | 16.2 mm | 16.2 mm |
| Transistor Type | 1 N-Channel | 1 N-Channel | 1 N-Channel |
| Type | MOSFET | MOSFET | MOSFET |
| Width | 5 mm | 5 mm | 5 mm |
| Brand | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild |
| Forward Transconductance Min | 4.7 S | - | 5.5 S |
| Fall Time | 50 ns | 55 ns | 45 ns |
| Product Type | MOSFET | MOSFET | MOSFET |
| Rise Time | 65 ns | 80 ns | 70 ns |
| Factory Pack Quantity | 360 | 30 | 360 |
| Subcategory | MOSFETs | MOSFETs | MOSFETs |
| Typical Turn Off Delay Time | 65 ns | 95 ns | 65 ns |
| Typical Turn On Delay Time | 28 ns | 35 ns | 30 ns |
| Unit Weight | 0.000198 oz | 0.000194 oz | 0.000194 oz |
| Part # Aliases | - | - | FQAF6N80_NL |