JANSF2N2221AL-Transistor Overview
The JANSF2N2221AL-Transistor is a robust NPN bipolar junction transistor (BJT) designed for general-purpose amplification and switching applications. This transistor delivers reliable performance with a maximum collector current of 800mA and a collector-emitter voltage rating of 40V, making it suitable for moderate power circuits. Its medium gain and fast switching speed provide versatility in industrial and electronic designs. The device??s durable construction ensures enhanced reliability in demanding environments. Engineers and sourcing specialists value this transistor for its balance of efficiency, robustness, and ease of integration into various systems. For detailed sourcing and technical support, visit IC Manufacturer.
JANSF2N2221AL-Transistor Technical Specifications
| Parameter | Specification |
|---|---|
| Transistor Type | NPN Bipolar Junction Transistor (BJT) |
| Collector-Emitter Voltage (VCEO) | 40 V |
| Collector Current (IC) | 800 mA (Continuous) |
| Power Dissipation (Ptot) | 500 mW |
| DC Current Gain (hFE) | 100 to 300 (varies with operating conditions) |
| Transition Frequency (fT) | 250 MHz (typical) |
| Package Type | TO-18 Metal Can |
| Operating Temperature Range | -55??C to +150??C |
JANSF2N2221AL-Transistor Key Features
- High Collector Current Capacity: Supports up to 800mA, enabling efficient operation in medium-power amplification and switching circuits.
- Moderate Voltage Rating: With a collector-emitter voltage limit of 40V, it offers flexibility for various industrial control and signal processing applications.
- Fast Switching Speed: Transition frequency around 250 MHz ensures quick response times, essential for high-frequency signal amplification and switching.
- Durable TO-18 Package: Metal can construction provides excellent thermal stability and reliability in harsh environments.
Typical Applications
- General-purpose amplification in audio and signal processing circuits where medium power handling is required.
- Switching applications in industrial control systems, including relay driving and interface logic circuits.
- Driver stages for small motors and solenoids that require moderate current and voltage ratings.
- Test and measurement instrumentation circuits benefiting from stable gain and fast switching characteristics.
JANSF2N2221AL-Transistor Advantages vs Typical Alternatives
This transistor offers a balanced combination of power handling and switching speed that often surpasses standard low-power alternatives. Its metal TO-18 package enhances thermal dissipation and mechanical robustness, improving reliability in industrial environments. Compared to plastic-packaged transistors, it provides superior long-term stability and is less susceptible to damage from environmental stress. The device??s moderate voltage rating and high collector current capability make it a versatile choice for a broad range of BJT applications.
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JANSF2N2221AL-Transistor Brand Info
The JANSF2N2221AL is a military-grade variant of the widely used 2N2221 transistor family, manufactured under stringent quality controls for defense and aerospace applications. The ??JAN?? prefix indicates compliance with Joint Army-Navy standards ensuring higher reliability and performance consistency. This transistor is produced by established semiconductor manufacturers specializing in industrial and military-grade components, guaranteeing traceability, rigorous testing, and extended temperature range operation. It is well-regarded in the electronics industry for dependable performance in critical systems.
FAQ
What is the maximum collector current of this transistor?
The maximum continuous collector current rating is 800mA, allowing it to handle moderate current loads safely in switching and amplification circuits.
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In which package is this transistor supplied, and why does it matter?
This transistor comes in a TO-18 metal can package, which provides superior thermal conductivity and mechanical







