Overview
The BC857B-QR is a PNP general-purpose bipolar transistor manufactured by Nexperia USA Inc. This transistor is part of the BC857 series and is designed for low current and low voltage applications. It is packaged in a small SOT23 (TO-236AB) Surface-Mounted Device (SMD) plastic package, making it suitable for a wide range of electronic designs. The BC857B-QR is qualified according to AEC-Q101, which recommends it for use in automotive applications, as well as other general-purpose switching and amplification roles.
Key Specifications
| Parameter | Value |
|---|---|
| Type | PNP Bipolar Transistor |
| Package | SOT23 (TO-236AB) |
| Collector-Base Voltage (VCEO) | -65 V |
| Collector Current (IC) | 100 mA |
| Power Dissipation (Ptot) | 250 mW |
| Current Gain (hFE) | 220 - 475 |
| Junction Temperature (TJ) | 150 °C |
| Transition Frequency (fT) | 100 MHz |
| Automotive Qualified | Yes (AEC-Q101) |
Key Features
- Low current (max. 100 mA) and low voltage (max. 65 V) capabilities.
- Qualified according to AEC-Q101, making it suitable for automotive applications.
- General-purpose switching and amplification.
- Compact SOT23 (TO-236AB) package for space-efficient designs.
- High current gain (hFE) range of 220 to 475.
Applications
The BC857B-QR is versatile and can be used in various applications, including:
- Automotive systems due to its AEC-Q101 qualification.
- General-purpose switching and amplification circuits.
- Industrial and consumer electronics.
- Mobile and wearable devices where space and efficiency are critical.
Q & A
- What is the maximum collector current of the BC857B-QR?
The maximum collector current is 100 mA. - What is the maximum collector-base voltage of the BC857B-QR?
The maximum collector-base voltage is -65 V. - In what package is the BC857B-QR available?
The BC857B-QR is available in the SOT23 (TO-236AB) package. - Is the BC857B-QR qualified for automotive applications?
Yes, it is qualified according to AEC-Q101. - What is the transition frequency of the BC857B-QR?
The transition frequency is 100 MHz. - What is the power dissipation of the BC857B-QR?
The power dissipation is 250 mW. - What is the current gain range of the BC857B-QR?
The current gain range is 220 to 475. - What is the junction temperature limit of the BC857B-QR?
The junction temperature limit is 150 °C. - Can the BC857B-QR be used in consumer electronics?
Yes, it can be used in consumer electronics due to its general-purpose nature. - How can I obtain samples of the BC857B-QR?
Samples can be obtained through Nexperia's sales organization or their network of global and regional distributors.
