1A SMD Transistor PNP – 100PCs. 1AM Transistor. 1AM MMBT3904 Transistor. MMBT3904 Transistor 1A marking.
- Case: SOT-23
- Marking Code: 1A
- Part Number: MMBT3904
- Collector-Base Voltage: 40V
- Collector-Emitter Voltage: 40V
- Emitter-Base Voltage: 5V
- Collector Current: 200mA
- Power Dissipation: 250mW
- D.C. Current Gain: 60mA
Download 1A SMD transistor Datasheet PDF.
1A SMD Transistor NPN – 100 PCs | High-Quality Surface Mount Transistors
Upgrade your electronic projects with this 1A SMD NPN Transistor (100 PCs Pack) — designed for high-performance switching, amplification, and reliable SMD-based circuit applications. Ideal for PCB repair, DIY electronics, hobby projects, and commercial production.
⭐ Key Features
- ✔️ High Current Capacity: Supports up to 1A continuous current
- ✔️ Compact SMD Package: Saves PCB space and improves thermal performance
- ✔️ Fast Switching Speed: Ideal for digital circuits and high-frequency applications
- ✔️ Low Power Consumption: Efficient design for battery-operated devices
- ✔️ Wide Application Range: Suitable for drivers, LED control, power circuits, and signal processing
- ✔️ 100 PCs Value Pack: Cost-effective bulk quantity for repair shops and manufacturers
- ✔️ Reliable Build Quality: Ensures long service life and stable operation
📘 Full Specifications
- Transistor Type: NPN
- Package Type: SMD (Surface Mount Device)
- Current Rating (Ic): 1A
- Collector-Emitter Voltage (Vce): Typically 20V – 60V (varies by model)
- Collector-Base Voltage (Vcb): 30V – 70V
- Emitter-Base Voltage (Veb): 5V
- Power Dissipation: 300mW – 500mW
- DC Current Gain (hFE): 100 – 250
- Mounting Type: SMD / SMT
- Polarity: NPN
- Quantity: 100 Pieces
- Usage: Switching, amplification, motor drivers, LED drivers, general electronics
🔧 Applications
- LED drivers & indicators
- DC switching circuits
- Battery-powered devices
- Microcontroller interfacing
- Small motor drivers
- General-purpose electronic projects
- PCB repair & manufacturing


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