| Manufacturer: | STMicroelectronics |
| Product Type: | BJTs – Bipolar Transistors |
| Mounting Style: | SMD/SMT |
| Transistor Polarity: | NPN |
| Configuration: | Single |
| Maximum DC Collector Current: | 500 mA |
| Collector- Emitter Voltage VCEO Max: | 45 V |
| Collector- Base Voltage VCBO: | 50 V |
| Emitter- Base Voltage VEBO: | 5 V |
| Collector-Emitter Saturation Voltage: | 700 mV |
| Pd – Power Dissipation: | 250 mW |
| Gain Bandwidth Product fT: | 100 MHz |
| Minimum Operating Temperature: | – 65 ℃ |
| Maximum Operating Temperature: | + 150 ℃ |
| DC Collector/Base Gain hfe Min: | 250 |
| DC Current Gain hFE Max: | 600 |
| Packaging: | Reel |
| Packaging: | Cut Tape |
| Technology: | Si |
| Package / Case: | SOT-23-3 |
The BC817-40 is a general-purpose NPN bipolar junction transistor (BJT) commonly used in switching and amplification applications. It is known for its compact size, high gain, and versatility, making it suitable for a wide range of low-power electronic circuits.