SMMBT3904LT1G

The SMMBT3904LT1G is a general-purpose NPN bipolar junction transistor (BJT) in a small SOT-23 surface-mount package. Key features include:
- Voltage/Current Ratings: 40V collector-emitter voltage (V_CEO), 200mA continuous collector current (I_C).
- Gain (h_FE): Typically 100–300 at 10mA.
- Low Power: Suitable for switching and amplification in low-power circuits.
- Package: Compact SOT-23 (3-pin), ideal for space-constrained designs.
Common applications include signal amplification, switching loads, and digital logic circuits. It’s a cost-effective, widely used alternative to the 2N3904 in surface-mount designs.
For detailed specs, refer to the datasheet from manufacturers like ON Semiconductor.

The SMMBT3904LT1G is a NPN bipolar junction transistor (BJT) in a SOT-23 package with 3 pins.
Pin Functions:
1. Emitter (E) – Connected to ground/common.
2. Base (B) – Controls transistor switching/amplification.
3. Collector (C) – Connects to the load/supply.
Key Features:
- V_CEO: 40V
- I_C (max): 200mA
- h_FE (gain): 100–300
- Low-power switching & amplification
Compact and widely used in signal amplification, switching circuits, and driver applications.

The SMMBT3904LT1G is manufactured by ON Semiconductor, now known as onsemi after rebranding in 2021.
onsemi is a global semiconductor company specializing in power management, analog, and sensor solutions. It serves industries like automotive, industrial, and consumer electronics, focusing on energy-efficient technologies. The company is headquartered in Phoenix, Arizona, and is a key player in the semiconductor market.
The SMMBT3904LT1G is a general-purpose NPN bipolar junction transistor (BJT) in a small SOT-23 package, commonly used for switching and amplification.

The SMMBT3904LT1G, an NPN bipolar junction transistor (BJT), is commonly used in:
1. Switching Circuits – Fast switching for relays, LEDs, and small loads.
2. Amplification – Small-signal amplification in audio, RF, and sensor circuits.
3. Logic Inverters – Basic digital logic applications.
4. Signal Processing – Buffering and waveform shaping.
5. Consumer Electronics – Found in devices like smartphones, TVs, and IoT modules.
Its compact SOT-23 package and low power handling make it ideal for space-constrained, low-voltage designs.

The SMMBT3904LT1G is a NPN bipolar transistor in a SOT-23 surface-mount package. This compact 3-pin package is widely used for general-purpose amplification and switching applications. It measures approximately 2.9mm x 1.3mm x 0.95mm, making it suitable for space-constrained designs. The SOT-23 package is industry-standard, offering good thermal and electrical performance for low-power applications.