SI3404HE3-TP N-channel MOSFET on PCB, illustrating low Rds(on) with minimal heat generation, 3D render for electronics catalog
The SI3404HE3-TP MOSFET is an automotive-grade N-channel transistor designed for efficient power switching and load control.
It supports up to 30 V drain-source voltage and continuous drain currents of approximately 5.6 A, making it suitable for automotive and industrial electronics.
This MOSFET comes in a compact SOT‑23 surface-mount package, enabling integration in space-constrained PCB designs.
What Is the SI3404HE3-TP MOSFET?
The SI3404HE3-TP MOSFET is a Metal Oxide Semiconductor Field Effect Transistor.
It controls current between drain and source terminals through the gate voltage.
This design enables fast switching with minimal conduction losses, which is critical for automotive and battery-powered applications.
The HE3 variant is optimized for higher reliability and thermal performance, making it suitable for rugged automotive and industrial environments.
Key Features of SI3404HE3-TP MOSFET
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N-channel MOSFET for power switching and load control
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Drain-Source Voltage (Vdss): 30 V
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Continuous Drain Current (Id): ~5.6 A
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Low On-State Resistance (Rds(on)) for efficient conduction
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Package: Compact SOT‑23 surface mount
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Power Dissipation: Up to 1.2 W
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Operating Temperature: −55 °C to +150 °C
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Gate-Source Voltage (Vgs): ±20 V maximum
These features ensure efficient energy usage and stable operation in automotive and industrial systems.
Electrical Performance Advantages of SI3404HE3-TP MOSFET
The low Rds(on) reduces power loss and heat generation.
High current capability allows driving moderate-power loads such as motors, relays, or DC-DC converters.
Its fast switching characteristics minimize energy waste and improve system efficiency.
AEC-Q101 qualification ensures consistent performance in demanding automotive environments.
Typical Automotive and Power Switching Applications
The SI3404HE3-TP MOSFET is used in:
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Automotive load switches and control modules
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Battery-powered and portable electronic devices
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Motor and relay driver circuits
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Industrial automation and control systems
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Consumer electronics power management
These applications illustrate its versatility in efficient power control and switching.
Design Tips for SI3404HE3-TP N-Channel MOSFET
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Ensure proper PCB layout with sufficient copper area for heat dissipation
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Use appropriate gate drive voltage (±20 V) for fast switching
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Maintain trace widths to support continuous drain current
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Integrate thermal management for high-reliability applications
Proper design ensures optimal Rds(on) performance and extends device longevity.