The Cornerstone of Transistor Knowledge The 2n3904 331 Datasheet Explained
The 2n3904 331 Datasheet is essentially a technical blueprint for the 2N3904 NPN bipolar junction transistor. This tiny semiconductor component acts like a controlled switch or amplifier, fundamental to countless electronic circuits. The "331" designation often refers to a specific manufacturer or a particular batch, but the core characteristics of the 2N3904 remain consistent. This datasheet provides all the critical information needed to design and implement circuits reliably.-
Electrical Characteristics
This section details how the transistor behaves under various conditions. It includes crucial parameters like:
- Vbe (Base-Emitter Voltage)
- Ic (Collector Current)
- hFE (DC Current Gain)
- Mechanical Data Information about the physical package of the transistor is found here, such as its dimensions and pinout.
- Absolute Maximum Ratings This is arguably the most important part of the datasheet. It specifies the limits beyond which the transistor should not operate to prevent damage. Exceeding these limits can lead to permanent failure. These ratings are the absolute boundaries for safe operation.
Here's a look at some common uses:
- Switching Applications The 2N3904 can act as an electronic switch, turning other components on and off based on a small input signal. This is common in controlling LEDs, relays, and motors.
- Amplification It can amplify weak signals, making them stronger. This is essential in audio circuits, radio receivers, and sensor interfaces.
- Logic Gates In simpler digital circuits, multiple 2N3904 transistors can be combined to form basic logic gates like NOT, AND, and OR gates.
The 2n3904 331 Datasheet provides the precise values for these parameters:
| Parameter | Typical Value |
|---|---|
| Collector-Emitter Voltage (VCEO) | 40V |
| Collector Current (Ic) | 200mA |
| DC Current Gain (hFE) | 100 - 300 |