Nexperia

BC817-40,235

BC817-40,235 Description

The BC817-40,235 from Nexperia is a high-performance NPN bipolar junction transistor (BJT) designed for surface-mount applications. Packaged in TO-236AB (SOT-23), it offers a compact footprint while delivering robust performance with a collector-emitter voltage (Vce) rating of 45V and a collector current (Ic) capability of 500mA. This transistor is AEC-Q101 qualified, making it suitable for automotive-grade applications where reliability under harsh conditions is critical.

BC817-40,235 Features

• High Current Gain (hFE): Minimum 250 @ 100mA, 1V, ensuring efficient signal amplification.
• Low Saturation Voltage: 700mV @ 50mA, 500mA, reducing power losses in switching applications.
• Wide Operating Temperature: Up to 150°C (TJ), ideal for high-temperature environments.
• Fast Switching: Transition frequency (fT) of 100MHz, enabling use in high-speed circuits.
• Low Leakage Current: 100nA (ICBO) max, enhancing power efficiency.
• RoHS3 & REACH Compliant: Environmentally friendly and suitable for modern regulatory standards.
• Moisture Sensitivity Level (MSL) 1: Unlimited shelf life, simplifying storage and handling.

BC817-40,235 Applications

• Automotive Electronics: Engine control units (ECUs), lighting systems, and sensors due to its AEC-Q101 compliance.
• Switching Circuits: Load drivers, relay drivers, and power management with low Vce(sat).
• Signal Amplification: Audio preamps, sensor interfaces, and low-noise amplifiers.
• Portable Devices: Battery-powered applications benefiting from its low leakage current.
• Industrial Controls: Motor drivers and automation systems requiring high-temperature stability.

Conclusion of BC817-40,235

The BC817-40,235 stands out as a versatile, high-reliability NPN transistor optimized for automotive and industrial applications. Its high current gain, low saturation voltage, and robust thermal performance make it superior to generic BJTs in demanding environments. Whether used in switching, amplification, or control circuits, this transistor delivers consistent performance, efficiency, and durability, backed by Nexperia’s quality assurance. Ideal for designers seeking a compact, high-performance solution with long-term supply security.