Overview
The FDG8850NZ is a dual N-channel enhancement-mode MOSFET from Onsemi , packaged in a compact SuperSOT-6 package , suitable for high-density PCB designs.
This device integrates two independent N-channel MOSFETs , featuring low on-resistance (RDS(on)), fast switching characteristics, and good thermal performance . It is widely used in load switching, power path control, battery management, and DC/DC conversion circuits.
The FDG8850NZ is particularly suitable for portable devices and embedded system designs that require space optimization, high efficiency, and low loss .
Core parameters
| Parameter Items | Specification |
| Device type | Dual N-channel MOSFET |
| Drain-source voltage (VDS) | 30V |
| Continuous drain current (ID) | 2.8A (single channel, typical) |
| On-resistance (RDS(on)) | 85mΩ @ VGS=4.5V (typical) |
| Gate charge (Qg) | Low (suitable for high-speed switching) |
| Power dissipation | Optimized heat dissipation design |
| Encapsulation type | SuperSOT-6 (SOT-23-6) |
| Operating temperature range | -55°C ~ +150°C |
| polarity | N channels × 2 (independent) |
| Environmental standards | RoHS / Lead-free |
Features
- Dual MOSFET integrated design
- Two independent N-channel MOSFETs are integrated in a single package.
- Saves PCB space and simplifies design.
- Low on-resistance (RDS(on))
- Reduce conduction losses and improve system efficiency
- Suitable for power path and load switching
- Quick on/off capability
- Low gate charge (Qg)
- Improve switching efficiency and reduce switching losses
- Wide voltage adaptability (30V)
- Suitable for 5V / 12V / 24V systems
- Excellent thermal performance
- Supports high current loads
- Improve system reliability
- Small-size package
- SuperSOT-6 is suitable for high-density designs.
- Commonly used in portable devices and compact modules
Typical application scenarios
- Power path management
- Automatic switching between battery and adapter
- ORing circuit
- load switch
- MCU controls the power switch of peripheral devices
- USB / Peripheral Power Control
- DC/DC conversion circuit
- Synchronous rectification
- Low-side/high-side switch
- Battery Management System (BMS)
- Charge and discharge control
- Battery protection
- Portable electronic devices
- Smart handheld devices
- IoT module
Typical circuit application description
- The FDG8850NZ can be used to build:
- Dual-channel load control circuit
- Reverse current protection (Back-to-Back MOS structure)
- Automatic power switching (Ideal Diode) circuit
- For example, in battery-powered systems:
- Two MOSFETs can form a reverse protection structure.
- Prevents reverse current flow and protects system safety.
Performance Comparison
| Index | FDG8850NZ | AO3400A (Single MOS) | Si2302 (single MOS) |
| Number of MOS | Dual Channel | single channel | single channel |
| VDS | 30V | 30V | 20V |
| RDS(on) | 85mΩ | 30mΩ | 50mΩ |
| Packaging | SOT-23-6 | SOT-23 | SOT-23 |
| application | Dual-channel control | single-channel switch | Low power applications |
The advantage of the FDG8850NZ lies in its dual-channel integration and system design flexibility .
Manufacturer Profile: onsemi
onsemi is one of the world’s leading power semiconductor manufacturers, focusing on:
- MOSFET
- Power Management
- Automotive electronics
Its products are widely used in the industrial and automotive sectors due to their high reliability, high efficiency, and long-term supply capabilities .
Why choose FDG8850NZ?
● Dual MOSFET integration saves PCB space
● Low on-resistance improves system efficiency
● Supports 30V power systems
● Suitable for load switching and power path control
● Small package for high-density designs
● Industrial-grade temperature range for high reliability
● Onsemi brand guarantee for long-term stable supply
Frequently Asked Questions (FAQ)
Q1: Can it replace two separate MOSFETs?
Yes. The FDG8850NZ integrates dual N-channel MOSFETs , enabling dual-channel switching or back-to-back applications within a single package. This effectively reduces the number of external components, saves PCB space, and improves system integration and reliability.
Q2: Is it suitable for battery protection?
Yes. This device is suitable for applications such as reverse connection protection, charge/discharge control, and load switching . Its low on-resistance helps reduce power consumption and improve system efficiency, and it is commonly used in lithium battery management and power path control for portable devices.
For more details and to explore our inventory, please visit the following link:
Product Details: Win Source – FDG8850NZ
Price: Win Source – FDG8850NZ
©2026 Win Source Electronics. All rights reserved. This content is protected by copyright and may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of Win Source Electronics.
COMMENTS