2N2221AUA/TR NPN Transistor by ON Semiconductor, TO-92 Package ?C General Purpose Amplifier

2N2221AUA/TR Overview

The 2N2221AUA/TR is a versatile NPN bipolar junction transistor designed for general purpose low-power amplification and switching applications. Featuring a robust gain bandwidth product and reliable current handling capabilities, this transistor is optimized for medium voltage and current operations. Its TO-92 plastic package ensures easy integration into through-hole PCB layouts, making it ideal for industrial control circuits, signal amplification, and driver stages. Sourced from a reputable manufacturer, the 2N2221AUA/TR delivers consistent performance and dependable operation, making it a preferred choice for engineers and sourcing specialists seeking a cost-effective and proven transistor solution. For more information, visit Fabricant de circuits intégrés.

2N2221AUA/TR Key Features

• High current gain enabling efficient amplification of weak signals, enhancing signal integrity in sensitive circuits.
• Complementary switching capability supports fast response times, crucial for digital switching and pulse circuits.
• Robust collector current rating allows handling of moderate loads without performance degradation, increasing reliability in power control applications.
• Compact TO-92 package ensures easy mounting and heat dissipation, streamlining PCB layout and assembly processes.

2N2221AUA/TR Technical Specifications

Paramètres	Valeur	Unité
Type de transistor	NPN	–
Tension collecteur-émetteur (VPDG)	40	V
Tension collecteur-base (VCBO)	75	V
Tension de base de l'émetteur (VEBO)	6	V
Courant de collecteur (IC)	600	mA
Dissipation de puissance (Ptot)	500	mW
Fréquence de transition (fT)	250	MHz
Gain en courant continu (hFE)	100?C300	–
Type d'emballage	TO-92	–

2N2221AUA/TR Advantages vs Typical Alternatives

This transistor offers a balanced combination of moderate voltage ratings and high current gain, providing improved sensitivity and switching accuracy compared to many generic low-power BJTs. Its fast transition frequency supports high-speed applications, while the TO-92 package benefits integration in compact industrial designs. Reliability under continuous operation and efficient power handling make it a practical choice over typical alternatives lacking these combined attributes.

Applications typiques

• Signal amplification in industrial control systems, where precise current gain and moderate voltage handling are essential for maintaining signal fidelity and operational stability.
• Switching applications in low-power DC loads, enabling efficient control of relays, LEDs, and small motors with minimal power loss.
• Driver stage in audio circuits, offering reliable amplification within medium frequency ranges for sound processing equipment.
• General-purpose transistor use in educational and prototyping environments, where ease of handling and consistent performance are necessary.

2N2221AUA/TR Brand Info

The 2N2221AUA/TR is manufactured by a leading semiconductor company known for delivering high-quality discrete components tailored for industrial use. This transistor is part of their extensive portfolio of bipolar junction transistors designed to meet stringent performance and reliability standards. The brand??s commitment to rigorous testing and quality assurance ensures that the 2N2221AUA/TR performs consistently across various operating conditions, supporting engineers in building robust electronic circuits.

FAQ

What is the maximum collector current rating of this transistor?

The transistor can handle a continuous collector current of up to 600 mA, making it suitable for moderate load applications in switching and amplification tasks without risking damage.

Can this device be used for high-frequency applications?

Yes, with a transition frequency of approximately 250 MHz, it supports medium to high-frequency operations, making it suitable for signal amplification and switching in RF and audio frequency circuits.

What package type does the transistor come in, and why is it important?

The device is housed in a TO-92 plastic package, which offers compact size, ease of mounting on through-hole PCBs, and adequate thermal dissipation for low-power applications.

Is this transistor suitable for power switching applications?

It is ideal for low to medium power switching applications due to its 600 mA collector current and 500 mW power dissipation limits. For higher power requirements, a different transistor with greater ratings would be recommended.

What makes this transistor reliable for industrial use?

Its combination of robust voltage ratings, dependable current gain, and a proven packaging design ensures consistent performance and durability in industrial environments, reducing failure rates in critical electronic systems.