FDS8978 Specifications
Manufacturer: onsemi (formerly Fairchild Semiconductor)
Part Number: FDS8978
Component Type: Dual N-Channel MOSFET
Configuration: Two N-channel MOSFETs in one package
Drain Source Voltage: 30 V
Continuous Drain Current: 7.6 A per channel
On Resistance: 18 mOhm at specified gate drive
Gate Charge: Low gate charge for efficient switching
Power Dissipation: 2.5 W total package rating
Package Type: SO-8
Mounting Type: Surface Mount Device
Gate Drive Compatibility: Logic-level gate drive
Operating Temperature Range: -55 C to +150 C
Process Technology: Advanced trench MOSFET
Compliance: RoHS compliant
Key Features
The FDS8978 is a dual N-channel MOSFET designed for efficient power switching in compact PCB layouts. It integrates two matched MOSFETs in a single SO-8 surface mount package, which reduces board space and simplifies routing. Additionally, its low on resistance minimizes conduction losses during high-current operation. The device supports logic-level gate drive, allowing direct interface with common controllers and microcontrollers. Furthermore, its low gate charge improves switching efficiency and reduces overall power loss. Because of its advanced trench process, the FDS8978 delivers reliable performance across a wide operating temperature range. These characteristics make it suitable for demanding power management designs.
Applications
DC-DC synchronous buck converters
Load switching in embedded power systems
Battery protection and power path control
Motor drive and actuator control circuits
Power management in consumer electronics
Product Overview
The FDS8978 is a surface-mount dual N-channel MOSFET optimized for high-efficiency power switching applications. Each MOSFET channel is rated for 30 volts and supports substantial current handling while maintaining low conduction losses. As a result, designers can achieve improved thermal performance and higher system efficiency.
Additionally, integrating two MOSFETs in one SO-8 package helps reduce component count and PCB complexity. This simplifies layout and improves manufacturing consistency. The logic-level gate threshold allows reliable switching from low-voltage control signals, which is critical in modern low-power systems.
Moreover, the device is designed to operate across a wide temperature range, ensuring stable behavior in both consumer and industrial environments. Its combination of low resistance, fast switching capability, and compact form factor makes it a dependable solution for power conversion, load control, and protection circuits. Consequently, the FDS8978 is widely used in applications where space efficiency and electrical performance must be balanced carefully.
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