1 Features
1• Protection Against ±2 kV, 42 Ω IEC 61000-4-5
Surge Test for Industrial Signal Lines
• Max Clamping Voltage of 19.3 V at 43 A of 8/20
μs Surge Current
• Standoff Voltage: 14 V
• Tiny 4 mm2 Footprint
• Survives Over 5,000 Repetitive Strikes of 35 A
8/20 μs Surge Current at 125°C
• Robust Surge Protection:
– IEC 61000-4-5 (8/20 μs): 43 A
– IEC 61643-321 (10/1000 μs): 8 A
• Low Leakage Current
– 2.2 nA Typical at 27°C
– 16 nA Typical at 85°C
• Low Capacitance: 120 pF
• Integrated Level 4 IEC 61000-4-2 ESD Protection

2 Applications
• Industrial Sensor I/O
• Solid State Drives
• PLC I/O Modules
• Grid Protection and Control
• 12 V Power Lines
• Appliances
• Medical Equipment

3 Description
The TVS1400 robustly shunts up to 43 A of IEC
61000-4-5 fault current to protect systems from high
power transients or lightning strikes. The device
offers a solution to the common industrial signal line
EMC requirement to survive up to ±2 kV IEC 61000-
4-5 open circuit voltage coupled through a 42 Ω
impedance. The TVS1400 uses a unique feedback
mechanism to ensure precise flat clamping during a
fault, assuring system exposure below 20 V. The tight
voltage regulation allows designers to confidently
select system components with a lower voltage
tolerance, lowering system costs and complexity
without sacrificing robustness.
In addition, the TVS1400 is available in a small 2 mm
× 2 mm SON footprint which is ideal for space
constrained applications, offering a 70 percent
reduction in size compared to industry standard SMA
and SMB packages. The extremely 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 TVS1400
against 5,000 repetitive surge strikes at high
temperature with no shift in device performance.
The TVS1400 is part of TI's Flat-Clamp family of
surge devices. For more information on the other
devices in the family, see the Device Comparison
Table.