BC846A NPN Transistor: High-Performance Surface Mount Solution | Fairchild Semiconductor
BC846A NPN Transistor: High-Performance Surface Mount Solution by Fairchild Semiconductor
The BC846A from Fairchild Semiconductor is a premium NPN bipolar junction transistor (BJT) designed for modern electronics. Packed in a compact SOT-23-3 package, this transistor delivers exceptional performance in amplification, switching, and signal processing. Below, we explore its features, specifications, and applications to help you understand why the BC846A is a top choice for engineers.
BC846A Transistor Overview
Manufacturer and Part Details
- Manufacturer: Fairchild Semiconductor (now part of ON Semiconductor)
- Part Number: BC846A
- Category: Discrete Semiconductor Products > Transistors - BJT - Single
Fairchild Semiconductor, a leader in semiconductor innovation, designed the BC846A for reliability and efficiency. Its surface-mount design makes it perfect for space-constrained applications.
Detailed Technical Specifications
1. Transistor Type and Polarity
- Type: NPN
- Polarity: Bipolar (BJT)
- Configuration: Single
NPN transistors like the BC846A are widely used for switching and amplification due to their ability to control current flow efficiently.
2. Current and Voltage Ratings
- Collector Current (Ic): 100 mA (max)
- Collector-Emitter Voltage (Vceo): 65 V
- Collector-Base Voltage (Vcbo): 80 V
- Emitter-Base Voltage (Vebo): 6 V
These ratings make the BC846A suitable for low to medium-power applications, including signal amplification and digital switching.
3. DC Current Gain (hFE)
- Minimum hFE: 110 @ 2 mA, 5 V
- Typical hFE: 200-450 (varies with operating conditions)
The high current gain ensures efficient signal amplification, making it ideal for audio and RF circuits.
4. Power and Thermal Characteristics
- Power Dissipation (Pd): 200 mW
- Junction Temperature (Tj): -65 C to +150 C
- Thermal Resistance (R JA): 357 C/W
The BC846A operates reliably across a wide temperature range, making it suitable for industrial and automotive applications.
5. Switching Performance
- Transition Frequency (fT): 100 MHz
- Turn-On/Turn-Off Time: < 50 ns
With a fast switching speed, the BC846A is excellent for high-frequency applications like PWM and communication systems.
Package and Mounting
- Package Type: SOT-23-3 (TO-236-3, SC-59)
- Mounting: Surface Mount (SMD)
- Dimensions: 2.9mm x 1.3mm x 1.1mm
The compact SOT-23-3 package saves PCB space and is compatible with automated assembly processes.
Applications of BC846A
The BC846A is versatile and used in:
- Audio Amplifiers: Preamplifiers and headphone drivers.
- Switching Circuits: LED drivers, relay controls, and logic gates.
- RF Modules: Signal amplification in communication devices.
- Consumer Electronics: Smartphones, wearables, and IoT devices.
- Industrial Automation: Sensor interfaces and motor control.
Why Choose BC846A?
- High Voltage Tolerance: Supports up to 65V, ensuring durability.
- Low Noise: Ideal for sensitive analog circuits.
- Cost-Effective: Affordable without compromising quality.
- Wide Availability: Easily sourced from major distributors.
Conclusion
The BC846A NPN transistor is a high-performance, reliable component for modern electronics. Its combination of high voltage tolerance, fast switching, and compact size makes it a preferred choice for engineers. Whether you're designing consumer gadgets or industrial systems, the BC846A delivers exceptional results.
Get the BC846A today and enhance your circuit designs with Fairchild Semiconductor s trusted technology!