Overview
The BC 857B B5003, produced by Infineon Technologies, is an NPN Silicon AF (Audio Frequency) transistor. This component is part of the general-purpose transistor family and is designed for various audio frequency applications. Although the specific part number BC 857B B5003 is noted as obsolete, the BC857B series remains relevant and widely used in the industry.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Collector Cutoff Current (ICBO) | −15 nA | VCB = −30 V, TA = 150°C |
| DC Current Gain (hFE) | 220 - 420 | IC = −2.0 mA, VCE = −5.0 V |
| Collector-Emitter Saturation Voltage (VCE(sat)) | −0.3 - −0.65 V | IC = −10 mA, IB = −0.5 mA; IC = −100 mA, IB = −5.0 mA |
| Base-Emitter Saturation Voltage (VBE(sat)) | −0.7 - −0.9 V | IC = −10 mA, IB = −0.5 mA; IC = −100 mA, IB = −5.0 mA |
| Package | SC-70/SOT-323 (Pb-Free) | |
| AEC-Q101 Qualified | Yes |
Key Features
- High current gain
- Low collector-emitter saturation voltage
- Low noise between 30 Hz and 15 kHz
- Complementary types available (BC847...-BC850... for NPN)
- Pb-free (RoHS compliant) package
- Qualified according to AEC Q101
Applications
The BC857B transistor is suitable for various applications, including:
- AF input stages
- Driver applications
Q & A
- What is the BC857B transistor used for?
The BC857B transistor is used for AF input stages and driver applications.
- What is the current gain (hFE) of the BC857B transistor?
The DC current gain (hFE) of the BC857B transistor ranges from 220 to 420.
- What is the collector-emitter saturation voltage (VCE(sat)) of the BC857B transistor?
The collector-emitter saturation voltage (VCE(sat)) is between −0.3 V and −0.65 V.
- Is the BC857B transistor Pb-free and RoHS compliant?
- What package type is the BC857B transistor available in?
The BC857B transistor is available in the SC-70/SOT-323 package.
- Is the BC857B transistor qualified according to AEC Q101?
- What are the complementary types of the BC857B transistor?
The complementary types of the BC857B transistor include BC847...-BC850... for NPN transistors.
- What is the noise performance of the BC857B transistor?
The BC857B transistor has low noise between 30 Hz and 15 kHz.
- Why is the BC857B transistor preferred in audio frequency applications?
The BC857B transistor is preferred in audio frequency applications due to its high current gain, low collector-emitter saturation voltage, and low noise characteristics.
- Can the BC857B transistor be used in automotive applications?
