2N2905-Transistor Overview
The 2N2905 is a PNP bipolar junction transistor (BJT) widely utilized in general-purpose amplification and switching applications. Featuring a maximum collector current of 600mA and a power dissipation rating suitable for moderate power tasks, it delivers reliable performance in industrial control circuits, audio amplifiers, and driver stages. Its complementary nature to the 2N2222 NPN transistor enables versatile push-pull configurations. The device offers stable operation with a gain bandwidth product conducive to medium-frequency applications. Engineers and sourcing specialists value the 2N2905 for its robustness and compatibility with diverse circuit designs. For detailed specifications and purchasing options, visit IC Manufacturer.
2N2905-Transistor Technical Specifications
| Parameter | Value |
|---|---|
| Type | PNP Bipolar Junction Transistor |
| Collector-Emitter Voltage (VCEO) | 60 V |
| Collector-Base Voltage (VCBO) | 60 V |
| Emitter-Base Voltage (VEBO) | 5 V |
| Collector Current (IC) | 600 mA |
| Total Power Dissipation (Ptot) | 625 mW |
| DC Current Gain (hFE) | 100 to 300 (typical) |
| Transition Frequency (fT) | 100 MHz (typical) |
| Package Type | TO-18 Metal Can |
2N2905-Transistor Key Features
- High Collector Current Capability: Supports up to 600mA, allowing for effective drive of moderate loads in switching circuits.
- Medium Voltage Rating: 60V collector-emitter voltage ensures suitability for a broad range of low to medium voltage applications.
- Complementary Pair Compatibility: Works seamlessly with the 2N2222 NPN transistor to enable push-pull amplifier configurations.
- Wide Gain Bandwidth: Provides a transition frequency around 100 MHz, ideal for moderate frequency amplification tasks.
- Robust Power Dissipation: Withstands power dissipation up to 625mW, enhancing reliability in industrial environments.
- Standard TO-18 Package: Facilitates ease of mounting and thermal management in through-hole PCB designs.
Typical Applications
- Audio Amplifier Stages: Used as a low-noise driver transistor to amplify audio signals within consumer and industrial audio equipment.
- Switching Circuits: Employed in relay drivers and general switching applications requiring reliable medium-current handling.
- Signal Amplification: Suitable for intermediate frequency amplification in analog circuits, ensuring signal integrity.
- Complementary Push-Pull Configurations: Ideal for complementary output stages alongside NPN transistors in power amplifiers and motor control circuits.
2N2905-Transistor Advantages vs Typical Alternatives
This transistor offers a balanced combination of moderate voltage and current ratings with a high gain bandwidth, outperforming many low-power alternatives. Its complementary pairing with common NPN transistors simplifies design of symmetric amplifier stages, enhancing integration efficiency. The robust power dissipation and reliable TO-18 package improve thermal stability and operational longevity compared to plastic-encapsulated transistors. These advantages make it a preferred choice for engineers seeking reliable, versatile PNP transistors in industrial and audio applications.
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2N2905-Transistor Brand Info
The 2N2905 is a widely standardized transistor originally introduced by manufacturers such as Fairchild Semiconductor and Texas Instruments. It remains a staple product offered by multiple IC manufacturers worldwide due to its proven performance and availability. The transistor??s consistent specifications and broad distributor support make it a dependable component in engineering inventories. It is typically supplied in a TO-18 metal can package, ensuring durability and superior thermal characteristics favored in industrial-grade applications.
FAQ
What is the maximum collector current rating of the 2N2905 transistor?
The maximum continuous collector current for this transistor is 600
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