Overview
The FDT439N is an N-Channel enhancement mode power field effect transistor produced by onsemi using their proprietary, high cell density DMOS technology. This technology is designed to minimize on-state resistance and provide superior switching performance, making it suitable for low voltage, low current applications. The transistor is housed in a widely used SOT-223 surface mount package, enhancing its versatility in various electronic designs.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Drain-Source Voltage (VDSS) | V | - | - | 30 |
| Gate-Source Voltage (VGSS) | V | - | - | ±8 |
| Continuous Drain Current (ID) | A | - | - | 6.3 |
| Pulsed Drain Current (ID) | A | - | - | 20 |
| Power Dissipation (PD) | W | - | - | 3 |
| Operating and Storage Junction Temperature Range (TJ, Tstg) | °C | -55 | - | 150 |
| Thermal Resistance, Junction-to-Ambient (RθJA) | °C/W | - | - | 42 |
| Thermal Resistance, Junction-to-Case (RθJC) | °C/W | - | - | 12 |
| Static Drain-Source On-Resistance (RDS(on)) @ VGS = 4.5V | Ω | 0.038 | 0.045 | 0.055 |
| Static Drain-Source On-Resistance (RDS(on)) @ VGS = 2.5V | Ω | 0.048 | 0.058 | 0.072 |
Key Features
- High cell density DMOS technology for low on-state resistance and superior switching performance.
- Fast switching speed.
- High power and current handling capability in a SOT-223 surface mount package.
- Pb-Free package.
- Low voltage, low current operation suitable for applications such as notebook computer power management, battery-powered circuits, and DC motor control.
Applications
- DC/DC Converters.
- Load Switches.
- Motor Driving.
- Notebook computer power management.
- Battery-powered circuits.
Q & A
- What is the maximum drain-source voltage (VDSS) of the FDT439N?
The maximum drain-source voltage (VDSS) is 30 V.
- What is the continuous drain current (ID) rating of the FDT439N?
The continuous drain current (ID) rating is 6.3 A.
- What is the thermal resistance, junction-to-ambient (RθJA), of the FDT439N?
The thermal resistance, junction-to-ambient (RθJA), is 42 °C/W.
- What are the typical applications of the FDT439N?
The FDT439N is typically used in DC/DC converters, load switches, motor driving, notebook computer power management, and battery-powered circuits.
- What is the gate-source voltage (VGSS) rating of the FDT439N?
The gate-source voltage (VGSS) rating is ±8 V.
- What is the static drain-source on-resistance (RDS(on)) at VGS = 4.5V?
The static drain-source on-resistance (RDS(on)) at VGS = 4.5V is typically 0.045 Ω.
- Is the FDT439N Pb-Free?
- What is the operating and storage junction temperature range of the FDT439N?
The operating and storage junction temperature range is -55°C to 150°C.
- What package type is the FDT439N available in?
The FDT439N is available in a SOT-223 surface mount package.
- What is the maximum power dissipation (PD) of the FDT439N?
The maximum power dissipation (PD) is 3 W.
