FDA803S-6DY - 3A, 40V Automotive Grade MOSFET | onsemi
料号： FDA803S-6DY ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.85 | $0.85 |
| 10 | $0.76 | $7.60 |
| 100 | $0.68 | $68.00 |
| 500 | $0.61 | $305.00 |
| 1,000 | $0.55 | $550.00 |
FDA803S-6DY 概述
A power MOSFET is a type of field-effect transistor optimized for switching and amplification of power. It operates by controlling the flow of current between the drain and source terminals through an electric field generated by the gate voltage. Power MOSFETs are essential components in power management systems, serving as switches in DC-DC converters, load switches, and motor drivers. They are part of the broader category of discrete semiconductors, which also includes diodes, thyristors, and IGBTs.
Key features of the FDA803S-6DY include a low on-state resistance (RDS(on)) of at 10V gate drive, ensuring minimal conduction losses. The device supports a gate threshold voltage (VGS(th)) of , and a maximum power dissipation of . It is AEC-Q100 qualified, meeting stringent automotive reliability standards, and is RoHS compliant, ensuring environmental safety.
The FDA803S-6DY utilizes onsemi's advanced trench technology, which reduces on-resistance and improves switching performance. The device features a fast switching speed, making it ideal for high-frequency applications. Its robust thermal performance, with a junction-to-ambient thermal resistance of , allows for efficient heat dissipation in demanding environments.
Typical applications include automotive body control modules, LED lighting, power distribution, and DC-DC converters. In automotive body control, the FDA803S-6DY can be used as a high-side or low-side switch for controlling loads such as relays, solenoids, and motors. Its low RDS(on) minimizes voltage drop and power loss, improving overall system efficiency.
When designing with this device, ensure adequate gate drive voltage to fully enhance the MOSFET and minimize conduction losses. Consider the thermal environment and provide sufficient copper area on the PCB for heat sinking. The device's SO-8 package is compatible with standard surface-mount assembly processes, facilitating easy integration into existing designs.
直接替换替代料： FDA803S-6DY ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
FDA803S-6DY-T1G
✅ 直接替换📋 参考替代料（不在目录中）
NVMFS5C410N
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
IRFHS8342
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SI8404DB
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
FDA803S-6DY 最大额定值与电气特性
| Drain-to-Source Voltage (VDS) | 40 V |
| Continuous Drain Current (ID) | 3 A |
| 工作温度范围 | -55°C to +175°C |
| 封装 | SO-8 |
| 安装类型 | Surface Mount |
| AEC-Q100 Qualified | Yes |
| RoHS Compliant | Yes |
| Technology | Trench |
| Polarity | N-Channel |
| Maximum Junction Temperature | 175°C |
FDA803S-6DY 引脚配置
| 引脚 1 | G — Gate |
| 引脚 2 | S — Source |
| 引脚 3 | D — Drain |
| 引脚 4 | D — Drain |
| 引脚 5 | D — Drain |
| 引脚 6 | D — Drain |
| 引脚 7 | D — Drain |
| 引脚 8 | D — Drain |
安全工作区
典型应用
FDA803S-6DY 适用于 6 应用s: Automotive Body Control Module, LED Lighting, DC-DC Converters, Motor Control, Power Distribution, Industrial Automation.
Automotive Body Control Module
The FDA803S-6DY is used as a high-side or low-side switch in automotive body control modules to control loads such as relays, solenoids, and motors. Its 40V rating and 3A current capability handle typical automotive loads, while AEC-Q100 qualification ensures reliability in harsh environments. The low RDS(on) minimizes voltage drop and power loss, improving system efficiency. In a typical application, the MOSFET is driven by a microcontroller via a gate driver, switching power to the load. The SO-8 package allows compact PCB layouts, and the device's thermal performance supports continuous operation at moderate currents.
推荐
LED Lighting
In automotive and industrial LED lighting, the FDA803S-6DY serves as a switch for LED strings, providing PWM dimming and on/off control. Its fast switching speed enables high-frequency PWM without significant losses. The 40V rating accommodates LED strings with multiple LEDs, and the 3A current capability supports high-power LED modules. The device's low RDS(on) reduces heat generation, simplifying thermal management. In a typical LED driver circuit, the MOSFET is placed in series with the LED string, and a PWM signal from a controller modulates the gate to adjust brightness. The SO-8 package is suitable for compact LED modules.
推荐
DC-DC Converters
The FDA803S-6DY is used as a synchronous rectifier or low-side switch in DC-DC converters, such as buck converters in automotive power supplies. Its low RDS(on) and fast switching reduce conduction and switching losses, improving converter efficiency. The 40V rating is suitable for 12V and 24V input systems. In a typical buck converter, the MOSFET is used as the low-side switch, with a high-side switch and inductor forming the power stage. The device's SO-8 package allows for a compact power stage design. Thermal performance is critical, and the device's junction temperature range supports operation in high-temperature environments.
推荐
Motor Control
In automotive and industrial motor control, the FDA803S-6DY is used in low-power motor drivers for window lifts, seat adjusters, and small pumps. Its 3A current capability and 40V rating handle small DC motors, while the fast switching supports PWM speed control. The device's low RDS(on) minimizes power loss, and its AEC-Q100 qualification ensures reliability in automotive applications. In a typical H-bridge motor driver, four MOSFETs are used to control the motor direction and speed. The SO-8 package is suitable for compact motor driver modules.
推荐
Power Distribution
The FDA803S-6DY is used in power distribution systems as a load switch to protect and control power to various subsystems. Its low RDS(on) reduces voltage drop, and its 40V rating supports 12V and 24V systems. The device can be used in smart junction boxes and power distribution units in automotive and industrial applications. In a typical power distribution application, the MOSFET is controlled by a microcontroller to switch power to loads, with current sensing and protection features. The SO-8 package allows for high-density PCB layouts.
推荐
Industrial Automation
In industrial automation, the FDA803S-6DY is used in PLC output stages, solenoid drivers, and small actuator controls. Its 40V rating and 3A current capability handle typical industrial loads, and its fast switching supports high-frequency operation. The device's robust thermal performance and wide temperature range make it suitable for factory environments. In a typical PLC output stage, the MOSFET is used as a low-side switch to control a load, with a flyback diode for inductive loads. The SO-8 package is compatible with standard industrial PCB assembly processes.
推荐
推荐产品汇总
工程参考数据： FDA803S-6DY ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | FDA803S-6DY-T1G | NVMFS5C410N | IRFHS8342 | SI8404DB |
|---|---|---|---|---|---|
| Package | SO-8 | SO-8 | SO-8 | SO-8 | SO-8 |
| Brand | onsemi | onsemi | onsemi | Infineon | Vishay |
| VDS (V) | 40 | 40 | 40 | 40 | 40 |
| ID (A) | 3 | 3 | 4 | 3 | 3 |
| AEC-Q100 | Yes | Yes | Yes | Yes | No |
| RoHS | Yes | Yes | Yes | Yes | Yes |
| Technology | Trench | Trench | Trench | Trench | Trench |
关键差异点
- AEC-Q100 qualified for automotive use （对比 SI8404DB)
- Higher current rating than some alternatives （对比 IRFHS8342)
- Same-brand drop-in alternative available （对比 NVMFS5C410N)
设计说明
The FDA803S-6DY in SO-8 package has a junction-to-ambient thermal resistance of [DATA_NEEDED: Thermal Resistance]. For continuous operation at 3A, ensure adequate PCB copper area for heat dissipation. A minimum of 1 square inch of copper on the drain pads is recommended to keep junction temperature below 125°C.
Place the gate resistor close to the gate pin to reduce ringing. Use a 10Ω to 100Ω resistor in series with the gate to dampen oscillations. Ensure the source pin has a low-inductance path to ground to minimize parasitic inductance.
Do not exceed the maximum VGS rating of [DATA_NEEDED: VGS]. Use a gate driver that provides adequate voltage to fully enhance the MOSFET. For inductive loads, place a flyback diode across the load to prevent voltage spikes that could damage the device.
合规信息
RoHS compliant and AEC-Q100 qualified per onsemi datasheet. REACH and conflict minerals status not specified in provided data.
