Texas Instruments TVS1801 18V Bidirectional Surge Protection Device
Texas Instruments TVS1801 18V Bidirectional Surge Protection Device shunts up to 30A of IEC 61000-4-5 fault current to protect systems from high-power transients or lightning strikes. The device survives the common industrial signal line EMC requirement of 1kV IEC 61000-4-5 open circuit voltage coupled through a 42Ω impedance. The TVS1801 uses a feedback mechanism to ensure precise flat clamping during a fault, keeping system exposure lower than traditional TVS diodes. The tight voltage regulation allows designers to confidently select system components with a lower voltage tolerance, lowering system costs and complexity without sacrificing robustness. The Texas Instruments TVS1801 has a ±18V operating range to enable operation in systems that require protection against reverse wiring conditions.
Features
- Protection against 1kV, 42Ω IEC 61000-4-5 surge test for industrial signal lines
- Bidirectional polarity enables protection against bipolar signaling or miswiring conditions
- Clamping voltage of 27.4V at 30A, 8/20µs surge current
- ±18V standoff voltage
- Small 3mm×3mm SON footprint
- Survives over 5,000 repetitive strikes of 30A, 8/20µs surge current at 125°C
- Robust surge protection
- 30A IEC61000-4-5 (8/20µs)
- 4.5A IEC61643-321 (10/1000µs)
- Low leakage current
- 0.4nA typical at 27°C
- 280nA maximum at 85°C
- 65pF low capacitance
- Integrated Level 4 IEC 61000-4-2 ESD protection
Applications
- Industrial sensors I/O
- PLC I/O modules
- Solid-state drives
- Appliances
- Medical equipment
- 12V power lines
Functional Block Diagram
發佈日期: 2019-03-29
| 更新日期: 2023-08-15