MMBT3904-TP

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MMBT3904-TP

+BOM

TRANS NPN 40V 0.2A SOT23

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Specifications

Attribute Value
Package / Case Tape & Reel (TR),Cut Tape (CT)
Part Status Active
Transistor Type NPN
Current - Collector(Ic)(Max) 200 mA
Voltage - Collector Emitter Breakdown(Max) 40 V
Vce Saturation(Max) @ Ib Ic 300mV @ 5mA, 50mA
Current - Collector Cutoff(Max) 50nA (ICBO)
DC Current Gain(h FE)(Min) @ Ic Vce 100 @ 10mA, 1V
Power - Max 350 mW
Frequency - Transition 300MHz
Operating Temperature -55°C ~ 150°C (TJ)
Mounting Type Surface Mount

Overview

Equivalent

Equivalent products to the MMBT3904-TP (NPN transistor) include:
- 2N3904 (through-hole equivalent)
- BC847 (SMD alternative)
- BC548 (general-purpose NPN)
- KST3904 (SMD replacement)
- PMBT3904 (similar SOT-23 package)
These offer comparable specs (40V, 200mA) for switching/amplification. Verify pinouts and parameters for your application.

Features

The MMBT3904-TP is a general-purpose NPN bipolar junction transistor (BJT) with the following key features:
- Voltage Rating: 40V (VCEO), 60V (VCBO).
- Current Rating: 200mA continuous collector current (IC).
- Power Dissipation: 350mW (total device dissipation).
- Gain (hFE): 100–300 at 10mA collector current.
- Switching Speed: Fast switching with transition frequency (fT) of 300MHz.
- Package: SOT-23 (small surface-mount package).
- Applications: Amplification, switching, and signal processing in low-power circuits.
It is a cost-effective, widely used transistor for general-purpose electronic designs.

Pinout

The MMBT3904-TP is a general-purpose NPN bipolar junction transistor (BJT) in a SOT-23 package with 3 pins:
1. Emitter (E): Output for current flow.
2. Base (B): Controls transistor switching/amplification.
3. Collector (C): Main current path.
Key Functions:
- Amplification: Boosts small signals.
- Switching: On/off control for digital circuits.
- Max Ratings: 40V (VCEO), 200mA (IC).
Compact and widely used in low-power applications.

Application

The MMBT3904-TP is a general-purpose NPN transistor 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. Digital Logic – Interface and driver circuits in microcontrollers.
4. Signal Inversion – Used in logic gates and pulse shaping.
5. Voltage Regulation – Part of linear regulators and bias circuits.
Its low cost, high gain, and fast response make it ideal for consumer electronics, automotive, and industrial applications.

Package

The MMBT3904-TP is a general-purpose NPN transistor available in a SOT-23 surface-mount package. This compact 3-pin package is widely used for small-signal amplification and switching applications. The "-TP" suffix typically indicates tape-and-reel packaging for automated assembly. Key dimensions are approximately 2.9mm x 1.3mm x 0.9mm.

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