MMBT3904LT1G

The MMBT3904LT1G is a general-purpose NPN bipolar junction transistor (BJT) from ON Semiconductor, housed in a compact SOT-23 package. Key features include:
- Voltage/Current Ratings:
- Collector-Emitter Voltage (V_CE): 40V
- Collector Current (I_C): 200mA
- Power Dissipation: 225mW
- Gain & Speed:
- DC Current Gain (h_FE): 100–300 (at 10mA)
- Transition Frequency (f_T): 300MHz
- Applications:
- Switching (e.g., relay drivers)
- Amplification (small-signal stages)
- Digital logic circuits
- Package: SOT-23 (3-pin), suitable for space-constrained designs.
This transistor is a cost-effective, reliable choice for low-power applications, offering good performance in switching and amplification roles. Always refer to the datasheet for detailed specifications.

Equivalent products to the MMBT3904LT1G (NPN transistor) include:
- 2N3904 (through-hole equivalent)
- BC847B (SMD alternative)
- MMBT4401LT1G (higher current rating)
- PMBT3904 (similar specs, different package)
These offer comparable NPN switching/amplification in SOT-23 packages. Check datasheets for exact parameter matching.

The MMBT3904LT1G is a general-purpose NPN bipolar junction transistor (BJT) with the following key features:
- Voltage Rating: 40V (V_CEO)
- Current Rating: 200mA (I_C)
- Power Dissipation: 225mW
- Gain Bandwidth Product (f_T): 300MHz
- DC Current Gain (h_FE): 100–300 (at 10mA)
- Low Saturation Voltage: V<sub>CE(sat)- Package: SOT-23 (Small, surface-mount)
- Applications: Switching, amplification, and signal processing in low-power circuits.
Compact and cost-effective, it’s widely used in consumer electronics, audio, and communication devices.</sub>

The MMBT3904LT1G is manufactured by ON Semiconductor (now known as onsemi after a rebranding in 2021).
onsemi is a global semiconductor company specializing in power management, analog, and sensor technologies. It serves industries like automotive, industrial, and consumer electronics, focusing on energy-efficient solutions. The company is headquartered in Phoenix, Arizona, and is a key player in the semiconductor market.
The MMBT3904LT1G is a general-purpose NPN bipolar junction transistor (BJT) commonly used in amplification and switching applications.

The MMBT3904LT1G, a general-purpose NPN bipolar junction transistor (BJT), is widely used in:
1. Switching Circuits – Fast switching for relays, LEDs, and small loads.
2. Amplification – Small-signal amplification in audio and RF stages.
3. Digital Logic – Interface and driver circuits in microcontroller applications.
4. Signal Processing – Used in oscillators, timers, and waveform generators.
5. Consumer Electronics – Found in TVs, radios, and portable devices.
Its compact SOT-23 package and reliable performance make it suitable for space-constrained, low-power applications.

The MMBT3904LT1G is a NPN bipolar junction transistor (BJT) available in a SOT-23 surface-mount package. This compact 3-pin package is widely used for small-signal amplification and switching applications. The SOT-23 offers good thermal and electrical performance in a small footprint, making it suitable for space-constrained PCB designs.