JANSL2N2221AUB-Transistor Overview
The JANSL2N2221AUB is a high-performance NPN bipolar junction transistor designed for general-purpose amplification and switching applications. It features reliable current gain and robust voltage handling capabilities, making it suitable for industrial and consumer electronics circuits. Its compact SOT-23 surface-mount package supports high-density PCB layouts while maintaining thermal efficiency. Ideal for engineers and sourcing specialists seeking a versatile transistor with proven performance, this device supports moderate power dissipation and switching speeds. For detailed technical support and procurement options, visit IC Manufacturer.
JANSL2N2221AUB-Transistor Technical Specifications
| Parameter | Specification |
|---|---|
| Transistor Type | NPN Bipolar Junction Transistor |
| Collector-Emitter Voltage (VCEO) | 40 V |
| Collector-Base Voltage (VCBO) | 75 V |
| Emitter-Base Voltage (VEBO) | 6 V |
| Collector Current (IC) | 600 mA |
| Power Dissipation (Ptot) | 500 mW |
| DC Current Gain (hFE) | 100 to 300 (typical) |
| Transition Frequency (fT) | 250 MHz |
| Package | SOT-23 Surface Mount |
| Operating Temperature Range | -55??C to +150??C |
JANSL2N2221AUB-Transistor Key Features
- High current gain: Ensures effective signal amplification with minimal input drive, improving circuit efficiency.
- Moderate voltage rating (40 V): Supports a wide range of low-to-medium voltage switching and amplification tasks critical for industrial electronics.
- Compact SOT-23 package: Enables high-density PCB designs while maintaining excellent thermal dissipation and mechanical reliability.
- Fast switching speeds (250 MHz transition frequency): Suitable for frequency-sensitive applications including signal processing and pulse generation.
Typical Applications
- General-purpose switching in control circuits, where moderate voltage and current handling are required for reliable operation.
- Low-noise amplifier stages in audio and signal conditioning circuits, benefiting from stable current gain.
- Interface driver for relay, LED, or small motor control in embedded systems and industrial automation.
- Oscillator circuits and pulse generation in communication and timing applications due to its fast transition frequency.
JANSL2N2221AUB-Transistor Advantages vs Typical Alternatives
This transistor offers a balanced combination of current gain, voltage tolerance, and switching speed that outperforms many generic alternatives. Its compact surface-mount package supports modern manufacturing processes while delivering consistent performance. Compared to through-hole devices, it reduces PCB space and improves thermal management. The broad operating temperature range and reliable gain characteristics ensure stable operation in harsh industrial environments, making it a preferred choice for engineers seeking efficiency and durability.
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JANSL2N2221AUB-Transistor Brand Info
The JANSL2N2221AUB transistor is a variant of the widely recognized 2N2221 series, produced by reputable semiconductor manufacturers specializing in discrete components for industrial and consumer electronics. This product line is known for its trusted performance in amplification and switching roles. The brand emphasizes quality control, consistent electrical characteristics, and compliance with industry standards, ensuring dependable integration into complex electronic systems. The transistor is typically sourced from manufacturers with extensive supply chain networks, providing availability for volume production and engineering prototypes.
FAQ
What is the maximum collector current for this transistor?
The maximum collector current is rated at 600 milliamperes. This allows the device to handle moderate power loads in switching and amplification circuits without risk of damage, provided other operating conditions are within specification.
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Can this transistor be used in high-frequency applications?
Yes, with a transition frequency of approximately 250 MHz, this transistor supports high-frequency operation suitable for signal processing, oscillators, and fast switching tasks in communications and control systems.






