Overview
The BC857BT-7-F is a PNP small signal surface-mount Bipolar Transistor manufactured by Diodes Incorporated. This transistor is designed for various applications including automatic insertion, switching, and AF amplifier circuits. It features an ultra-small SOT-523 package, making it ideal for space-constrained designs. The BC857BT-7-F operates over a wide temperature range of -55°C to 150°C and is part of a family that includes complementary NPN types such as the BC847AT, BT, and CT.
Key Specifications
| Parameter | Value |
|---|---|
| Transistor Polarity | PNP |
| Configuration | Single |
| Collector-Emitter Voltage VCEO Max | 45 V |
| Collector-Base Voltage VCBO | 50 V |
| Emitter-Base Voltage VEBO | 6 V |
| Collector-Emitter Saturation Voltage | 650 mV |
| Maximum DC Collector Current | 100 mA |
| Power Dissipation Pd | 150 mW |
| Gain Bandwidth Product fT | 100 MHz |
| Minimum Operating Temperature | -55°C |
| Maximum Operating Temperature | 150°C |
| DC Collector/Base Gain hFE Min | 220 |
| DC Current Gain hFE Max | 475 at -2 mA, -5 V |
| Transistor Case Style | SOT-523 |
| No. of Pins | 3 Pins |
| Mounting Style | SMD/SMT |
Key Features
- Ultra-small package: The BC857BT-7-F is housed in a compact SOT-523 surface-mount package, making it suitable for space-constrained designs.
- Wide operating temperature range: Operates from -55°C to 150°C, ensuring reliability in various environmental conditions.
- High gain bandwidth product: Features a gain bandwidth product of 100 MHz, suitable for high-frequency applications.
- Low saturation voltage: Collector-emitter saturation voltage of 650 mV, which is beneficial for low-voltage applications.
- Green device: Compliant with environmental standards, making it a green device.
- Complementary NPN types available: Compatible with BC847AT, BT, and CT NPN transistors for complementary designs.
Applications
- Automatic insertion: Suitable for automated assembly processes due to its surface-mount design.
- Switching applications: Used in various switching circuits due to its high gain and low saturation voltage.
- AF amplifier applications: Ideal for audio frequency amplifier circuits requiring high gain and low noise.
- Aerospace, Defence, Military: Used in demanding environments due to its wide operating temperature range and reliability.
- Automotive: Suitable for automotive applications requiring robust and reliable components.
- Power Management and Industrial: Used in power management and industrial applications where high reliability and performance are critical.
Q & A
- What is the transistor polarity of the BC857BT-7-F?
The transistor polarity of the BC857BT-7-F is PNP.
- What is the maximum collector-emitter voltage of the BC857BT-7-F?
The maximum collector-emitter voltage (VCEO) is 45 V.
- What is the operating temperature range of the BC857BT-7-F?
The operating temperature range is from -55°C to 150°C.
- What is the gain bandwidth product of the BC857BT-7-F?
The gain bandwidth product (fT) is 100 MHz.
- What is the collector-emitter saturation voltage of the BC857BT-7-F?
The collector-emitter saturation voltage is 650 mV.
- What is the maximum DC collector current of the BC857BT-7-F?
The maximum DC collector current is 100 mA.
- What is the power dissipation of the BC857BT-7-F?
The power dissipation (Pd) is 150 mW.
- What is the package type of the BC857BT-7-F?
The package type is SOT-523.
- Is the BC857BT-7-F a green device?
Yes, the BC857BT-7-F is a green device, compliant with environmental standards.
- What are some common applications of the BC857BT-7-F?
Common applications include automatic insertion, switching, AF amplifier circuits, aerospace, defence, military, automotive, power management, and industrial applications.
