Catalog
18-V bidirectional flat-clamp surge protection device
Key Features
• Protection against 1 kV, 42-Ω IEC 61000-4-5 surge test for industrial signal linesBidirectional polarity enables protection against bipolar signaling or miswiring conditionsClamping voltage of 27.4 V at 30 A of 8/20 µs surge currentStandoff voltage: ±18 VSmall 3 mm × 3 mm SON footprintSurvives over 5,000 repetitive strikes of 30-A 8/20 µs surge current at 125°CRobust surge protectionIEC61000-4-5 (8/20 µs): 30 AIEC61643-321 (10/1000 µs): 4.5 ALow leakage current0.4 nA typical at 27°C280 nA maximum at 85°CLow capacitance: 65 pFIntegrated level 4 IEC 61000-4-2 ESD protectionProtection against 1 kV, 42-Ω IEC 61000-4-5 surge test for industrial signal linesBidirectional polarity enables protection against bipolar signaling or miswiring conditionsClamping voltage of 27.4 V at 30 A of 8/20 µs surge currentStandoff voltage: ±18 VSmall 3 mm × 3 mm SON footprintSurvives over 5,000 repetitive strikes of 30-A 8/20 µs surge current at 125°CRobust surge protectionIEC61000-4-5 (8/20 µs): 30 AIEC61643-321 (10/1000 µs): 4.5 ALow leakage current0.4 nA typical at 27°C280 nA maximum at 85°CLow capacitance: 65 pFIntegrated level 4 IEC 61000-4-2 ESD protection
Description
AI
The TVS1801 device shunts up to 30 A 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 1-kV IEC 61000-4-5 open circuit voltage coupled through a 42-Ω 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 TVS1801 has a ±18-V operating range to enable operation in systems that require protection against reverse wiring conditions.
In addition, the TVS1801 is available in a small SON footprint designed for space constrained applications, offering a significant size reduction compared to standard SMA and SMB packages. Low device leakage and capacitance ensure a minimal effect on the protected line. To ensure robust protection over the lifetime of the product, TI tests the TVS1801 against 5000 repetitive surge strikes at 125°C with no shift in device performance.
The TVS1801 is part of TI’s Flat-Clamp family of surge devices. For a deeper look at the Flat-Clamp family, refer to theFlat-Clamp Surge Protection Technology for Efficient System Protectionwhite paper.
The TVS1801 device shunts up to 30 A 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 1-kV IEC 61000-4-5 open circuit voltage coupled through a 42-Ω 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 TVS1801 has a ±18-V operating range to enable operation in systems that require protection against reverse wiring conditions.
In addition, the TVS1801 is available in a small SON footprint designed for space constrained applications, offering a significant size reduction compared to standard SMA and SMB packages. Low device leakage and capacitance ensure a minimal effect on the protected line. To ensure robust protection over the lifetime of the product, TI tests the TVS1801 against 5000 repetitive surge strikes at 125°C with no shift in device performance.
The TVS1801 is part of TI’s Flat-Clamp family of surge devices. For a deeper look at the Flat-Clamp family, refer to theFlat-Clamp Surge Protection Technology for Efficient System Protectionwhite paper.
