JANSM2N2221A-Transistor Overview
The JANSM2N2221A transistor is a versatile NPN bipolar junction transistor widely used for switching and amplification in industrial electronics. Its robust design supports collector currents up to 800mA and offers a maximum collector-emitter voltage of 40V, making it well-suited for medium-power applications. The transistor??s high gain and reliable switching performance ensure efficient operation in control circuits and signal amplification. This device is ideal for engineers and sourcing specialists seeking a dependable semiconductor component with proven stability and consistent electrical characteristics. For detailed technical sourcing and application support, visit IC Manufacturer.
JANSM2N2221A-Transistor Technical Specifications
| Parameter | Specification |
|---|---|
| Transistor Type | NPN Bipolar Junction Transistor |
| Maximum Collector-Emitter Voltage (VCEO) | 40 V |
| Maximum Collector Current (IC) | 800 mA |
| Maximum Power Dissipation (Ptot) | 625 mW |
| DC Current Gain (hFE) | 100 min at IC = 150 mA |
| Transition Frequency (fT) | 300 MHz (typical) |
| Collector-Base Voltage (VCBO) | 75 V |
| Emitter-Base Voltage (VEBO) | 5 V |
| Package Type | TO-18 Metal Can |
JANSM2N2221A-Transistor Key Features
- High current capability: Supports collector currents up to 800mA, enabling robust switching and amplification in medium-power circuits.
- Wide voltage rating: Collector-emitter voltage of 40V ensures compatibility with various industrial control and interface applications.
- Reliable gain characteristics: Minimum DC current gain of 100 at moderate collector current guarantees stable amplification performance.
- High-frequency operation: Typical transition frequency of 300 MHz supports fast switching and signal processing tasks.
- Durable TO-18 packaging: Metal can package provides enhanced thermal dissipation and mechanical protection.
Typical Applications
- General purpose switching circuits: Used extensively for driving relays, lamps, and other loads requiring medium current switching with reliable transistor operation.
- Signal amplification: Effective in audio and low-power RF amplifier stages where stable gain and frequency response are critical.
- Interface and control logic: Ideal for interfacing between low-level logic signals and higher power devices in industrial automation.
- Test and measurement equipment: Provides dependable switching and amplification functions within instrumentation and sensor circuits.
JANSM2N2221A-Transistor Advantages vs Typical Alternatives
This transistor offers superior current handling and voltage ratings compared to many standard small-signal transistors, making it a preferred choice for applications demanding reliable medium-power operation. Its robust gain and high-frequency capabilities enhance switching speed and accuracy. The metal can TO-18 package improves thermal management and mechanical durability, ensuring longer lifecycle and consistent performance under industrial conditions.
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JANSM2N2221A-Transistor Brand Info
The JANSM2N2221A is a military-grade variant of the popular 2N2221 transistor series, historically produced under JAN (Joint Army-Navy) standards for high reliability and rigorous quality control. This transistor is commonly offered by manufacturers specializing in aerospace, defense, and industrial semiconductor components. It adheres to stringent testing and traceability requirements, ensuring consistent performance in critical applications where reliability is paramount.
FAQ
What is the maximum collector current rating for this transistor?
The maximum collector current for this device is 800 mA, allowing it to handle moderate current loads typical in switching and amplification tasks.
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Can this transistor be used for high-frequency applications?
Yes, it features a typical transition frequency of 300 MHz, making it suitable for many high-frequency switching and amplification circuits within industrial electronics.
What package type does this transistor use, and what are its benefits?
This transistor






