Overview
The BC857BMTF is a PNP epitaxial silicon transistor manufactured by Fairchild Semiconductor, now part of onsemi. This transistor is designed for general-purpose applications, including switching and amplification. It is packaged in a SOT-23 surface-mounted package, making it suitable for a wide range of electronic circuits.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector-Base Voltage (VCB0) | -50 | V |
| Collector-Emitter Voltage (VCEO) | -45 | V |
| Emitter-Base Voltage (VEB0) | -5 | V |
| Collector Current (IC) | -100 | mA |
| Peak Collector Current (ICM) | -200 | mA |
| DC Current Gain (hFE) | 220 - 475 | |
| Collector-Emitter Saturation Voltage (VCEsat) | -250 to -650 | mV |
| Base-Emitter Saturation Voltage (VBEsat) | -850 | mV |
| Total Power Dissipation (Ptot) | 250 | mW |
| Junction Temperature (Tj) | -150 | °C |
| Ambient Temperature (Tamb) | -65 to 150 | °C |
Key Features
- PNP epitaxial silicon transistor suitable for general-purpose applications.
- Low noise characteristics, making it suitable for various electronic circuits.
- Compact SOT-23 surface-mounted package, ideal for automatic insertion in thick and thin-film circuits.
- High DC current gain (hFE) ranging from 220 to 475.
- Low collector-emitter and base-emitter saturation voltages.
Applications
- Switching circuits: The BC857BMTF is well-suited for switching applications due to its high current gain and low saturation voltages.
- Amplifier circuits: Its low noise characteristics make it an excellent choice for amplifier applications.
- Automotive and industrial control systems: The transistor's robust specifications and compact package make it suitable for use in various control systems.
- Consumer electronics: It can be used in a variety of consumer electronic devices requiring reliable and efficient transistor performance.
Q & A
- What is the collector-base voltage of the BC857BMTF transistor?
The collector-base voltage (VCB0) of the BC857BMTF is -50 V.
- What is the maximum collector current of the BC857BMTF?
The maximum collector current (IC) is -100 mA.
- What is the DC current gain (hFE) of the BC857BMTF?
The DC current gain (hFE) ranges from 220 to 475.
- In what package is the BC857BMTF available?
The BC857BMTF is available in a SOT-23 surface-mounted package.
- What are the typical applications of the BC857BMTF transistor?
The BC857BMTF is typically used in switching and amplifier circuits, as well as in automotive and industrial control systems, and consumer electronics.
- Is the BC857BMTF still in production?
No, the BC857BMTF is obsolete and no longer manufactured. However, substitutes like the BC857BLT1G are available.
- What is the total power dissipation of the BC857BMTF?
The total power dissipation (Ptot) is 250 mW.
- What is the junction temperature range of the BC857BMTF?
The junction temperature (Tj) range is -150 °C.
- What is the base-emitter saturation voltage of the BC857BMTF?
The base-emitter saturation voltage (VBEsat) is approximately -850 mV.
- Is the BC857BMTF suitable for high-frequency applications?
While it can be used in various applications, its suitability for high-frequency applications should be evaluated based on specific requirements, as it has a current gain bandwidth product of 150 MHz).
