1N4148WS-7-F
Manufacturer
Model
1N4148WS-7-F
Category
The 1N4148WS-7-F switching diode is optimized for low-voltage signal switching applications requiring fast recovery times. With a 75V reverse voltage rating, 1.25V forward drop at 150mA, and 4ns reverse recovery, it is ideal for RF circuits, motor drive protection, and battery systems. Designers should prioritize thermal management above 100°C and ensure ESD protection during assembly. While cost-effective for moderate current switching, its voltage limitations make it unsuitable for high-voltage power systems.
Reference Pricing
Reference Stock
Specifications
| Forward Voltage Drop | Forward Voltage Drop: 1.1V |
| Junction Capacitance | Junction Capacitance: 25pF |
| Maximum Forward Current | Maximum Forward Current: 300mA |
| Maximum Reverse Voltage | Maximum Reverse Voltage: 100V |
| Operating Temperature Range | Operating Temperature Range: -55°C to +150°C |
| Package Type | SOD-323 |
| Rated Voltage | Rated Voltage: 75V |
| Reverse Recovery Time | Reverse Recovery Time: 4.0ns |
| Switching Speed | Switching Speed: 4.0ns |
| Thermal Resistance | Thermal Resistance: 625°C/W |
Function And Role
Core Function
Switching diode for low-voltage signal applications
Key Characteristics
- 75V DC reverse voltage
- 1.25V forward voltage at 150mA
- 4ns reverse recovery time
- Independent Type configuration
Application Domains
Basic Scenarios
- Signal switching in low-frequency circuits
- Rectification in power supplies below 75V
- Protection circuits for transistors
Extended Scenarios
- High-frequency switching in RF circuits
- Snubber circuits in motor drives
- Overcurrent protection in battery systems
Precautions
| Soldering | Use 20-30W soldering iron with 0.5-1mm diameter tip; avoid prolonged heat exposure |
| Current Limit | Max continuous current 150mA; peak current 200mA for 10μs |
| Voltage Limit | Reverse voltage must not exceed 75V; forward voltage exceeds 5V may cause thermal runaway |
| Thermal Management | Operating junction temperature range -65°C to +150°C; derate above 100°C |
| Storage | Store in <30% relative humidity environment; maximum temperature 85°C |
| Risk Warnings |
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Alternative Model Params
- Reverse voltage (Vr)
- Forward voltage (Vf)
- Reverse recovery time (trr)
- Max repetitive current (Irrm)
- Operating temperature range
Design Recommendations
| Layout | Keep trace lengths below 2mm in high-frequency paths; use via-in-pad for thermal relief |
| Thermal | Apply 0.5W thermal pad or 1mm thick copper for junction cooling |
| Compatibility | Ensure 10% tolerance matching for parallel-connected diodes |
| Testing | Validate reverse leakage current (<1μA) and forward voltage consistency |
Market Positioning
| Strengths |
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| Weaknesses |
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Datasheet
Assist inquiry
Distributors
Shenzhen Weishangcheng Technology Co., Ltd.
Shenzhen Futian District Sai Lian Hong Sheng Electronic Business Department
Shenzhen Guangfengsheng Electronic Co., Ltd.
Shenzhen Langguang Electronic Trade Co., Ltd.
Shenzhen Chengkun Gui Electronic Technology Co., Ltd.
Shenzhen Shunxin Cheng Electronic Co., Ltd.
Shenzhen Xintaiyuan Semiconductor Co., Ltd.
Shenzhen JiShiDa Electronics Co., Ltd.
Shenzhen Futian District Fengda Electronic Business Department
Shenzhen Fengcai Technology Co., Ltd.
Shenzhen Jinhaxin Electronic Co., Ltd.
Shenzhen Zhaotong Electronics Technology Co., Ltd.
Shenzhen Hongliqingdian Technology Co., Ltd.
Shenzhen Hengzhenhai Electronic Co., Ltd.
Shenzhen Huaguan KeXun Electronics Co., Ltd.
Shenzhen Aifiqi Electronics Technology Co., Ltd.
Shenzhen Alibaba Core City Electronic Technology Co., Ltd.
Shenzhen Futian New Asia Electronic Market Phase II Emerson Electronic Business Department Third Section
Shenzhen Futian New Asia Electronic Market Phase II Emerson Electronic Operation Department Section V
Shenzhen Futian New Asia Electronic Market Phase II Emerson Electronic Business Department Section Eight
Shenzhen Anhuaoli Technology Co., Ltd.
Affluent Industrial Enterprises Limited
Shenzhen Anyi Electronics Co., Ltd.
Shenzhen Anlogic Technology Co., Ltd.
Shenzhen Aolite Electronic Operation Department (Individual)
Yayang Electronics Technology (Suzhou) Co., Ltd.
Shenzhen Changshengjiayi Technology Co., Ltd.
Zhan Yao Co., Ltd.
Shenzhen Anxinmei Electronics Co., Ltd.
Shenzhen Baide Microelectronics Technology Co., Ltd.