1 Features

1• Protection Against 1 kV, 42 Ω IEC 61000-4-5

Surge Test for Industrial Signal Lines

• Max Clamping Voltage of 40 V at 35 A of 8/20 μs

Surge Current

• Standoff Voltage: 33 V

• Tiny 1.1 mm2 WCSP and 4 mm2 SON Footprints

• Survives Over 4,000 Repetitive Strikes of 30 A

8/20 μs Surge Current at 125°C

• Robust Surge Protection

– IEC61000-4-5 (8/20 μs): 35 A

– IEC61643-321 (10/1000 μs): 4 A

• Low Leakage Current

– 19 nA Typical at 27°C

– 28 nA Typical at 85°C

• Low Capacitance: 130 pF

• Integrated Level 4 IEC 61000-4-2 ESD Protection

2 Applications

• Industrial Sensors

• PLC I/O Modules

• 24 V Power Lines or Digital Switching Lines

• 4/20 mA Loops

• Appliances

• Medical Equipment

• Motor Drivers

3 Description

The TVS3300 robustly shunts up to 35 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 1 kV IEC 61000-4-

5 open circuit voltage coupled through a 42 Ω

impedance. The TVS3300 uses a unique feedback

mechanism to ensure precise flat clamping during a

fault, assuring system exposure below 40 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 TVS3300 is available in small 1 mm ×

1.1 mm WCSP and 2 mm × 2 mm SON footprints

which are ideal for space constrained applications,

offering up to a 90 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 TVS3300 against 4000

repetitive surge strikes at high temperature with no

shift in device performance.

The TVS3300 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