FDLL4148
Manufacturer
Model
FDLL4148
Category
The FDLL4148 SOD-80 switching diode is optimized for low-voltage, high-frequency switching applications with a 100V reverse voltage rating, 1V forward voltage at 10mA, and 4ns reverse recovery time. It supports 200mA continuous current in DC-DC converters, automotive systems, and industrial controls. Key design considerations include soldering time limits, thermal management above 175°C junction limits, and ESD protection. Alternative models must match critical parameters like Vr, Vf, and trr. Strengths include compact packaging and cost efficiency, but voltage limitations and higher cost compared to simpler diodes are weaknesses.
Reference Pricing
Reference Stock
Specifications
| Forward Voltage Drop | Forward Voltage Drop: 0.62V - 0.73V |
| Junction Capacitance | Junction Capacitance: 2.0pF - 4.0pF |
| Maximum Forward Current | Maximum Forward Current: 300mA |
| Maximum Reverse Voltage | Maximum Reverse Voltage: 100V |
| Operating Temperature Range | Operating Temperature Range: -55℃ to +175℃ |
| Package Type | SOD-80 |
| Rated Voltage | Rated Voltage: Not specified |
| Reverse Recovery Time | Reverse Recovery Time: 4.0ns |
| Switching Speed | Switching Speed: Not specified |
| Thermal Resistance | Thermal Resistance: 300℃/W |
Function And Role
Core Function
Switching diode for low-voltage, high-frequency applications
Key Characteristics
- 100V DC reverse voltage (Vr)
- 1V forward voltage (Vf@10mA)
- 4ns reverse recovery time (trr)
- 200mA rectified current (Irectified)
- SOD-80 package (SOD-80 package)
Application Domains
Basic Scenarios
- Low-voltage signal switching
- DC-DC converter circuits
- Automotive electronic control systems
Extended Scenarios
- High-frequency RF circuits
- Power supply protection
- Automotive battery management systems
- Industrial motor control
Precautions
| Soldering | Avoid prolonged heat exposure (max 2s per pad) for SOD-80 package |
| Current Limit | Max continuous current 200mA (surge 500mA) |
| Voltage Limit | Reverse voltage must not exceed 100V |
| Thermal Management | Junction temperature range -55°C to +175°C |
| Storage | Store in dry, cool environment (<30°C) with anti-static packaging |
| Risk Warnings |
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Alternative Model Params
- Vr (reverse voltage)
- Vf (forward voltage)
- trr (reverse recovery time)
- Irectified (rectified current)
- Operating temperature range
Design Recommendations
| Layout | Use 0.5mm trace width for power paths |
| Thermal | Add 10% thermal margin above junction temperature |
| Compatibility | Ensure footprint matches SOD-80 (2.5mm x 1.25mm) |
| Testing | Verify reverse recovery characteristics with 100kHz pulse test |
Market Positioning
| Strengths |
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| Weaknesses |
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Datasheet
Assist inquiry
Distributors
Shenzhen Rongda Wei Electronic Technology Co., Ltd.
Shenzhen Weishangcheng Technology Co., Ltd.
Shenzhen Liushengshiji Electronic Co., Ltd.
Shenzhen Songyi Microelectronics Technology Co., Ltd.
Shenzhen Yuxin Chuangda Technology Co., Ltd.
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Shenzhen Xinyazhou Electronic Market Donglidao Electronic Business Department
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Shenzhen Jinkaikebo Industrial Co., Ltd.
Shenzhen Kaida Xun Electronic Technology Co., Ltd.
Jingrun Xincheng (Shenzhen) Electronics Technology Co., Ltd.
Shenzhen Xingjiawang Electronic Technology Co., Ltd.
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Shenzhen Futian District Hanwei Xing Electronic Business