Product details

Number of channels (#) 1 IO capacitance (Typ) (pF) 40 Vrwm (V) 33 IEC 61000-4-2 contact (+/- kV) 8 IEC 61000-4-5 (A) 27 Features Flat-clamping, Surge Protection Bi-/uni-directional Bi-Directional Dynamic resistance (Typ) (Ω) 0.055 Clamping voltage (V) 40 TI functional safety category Functional Safety-Capable IO leakage current (Max) (nA) 100 Rating Catalog Operating temperature range (C) -40 to 125
Number of channels (#) 1 IO capacitance (Typ) (pF) 40 Vrwm (V) 33 IEC 61000-4-2 contact (+/- kV) 8 IEC 61000-4-5 (A) 27 Features Flat-clamping, Surge Protection Bi-/uni-directional Bi-Directional Dynamic resistance (Typ) (Ω) 0.055 Clamping voltage (V) 40 TI functional safety category Functional Safety-Capable IO leakage current (Max) (nA) 100 Rating Catalog Operating temperature range (C) -40 to 125
VSON (DRB) 8 9 mm² 3 x 3
  • Protection Against 1-kV, 42-Ω IEC 61000-4-5 Surge Test for Industrial Signal Lines
  • Bidirectional Polarity Enables Protection Against Bipolar Signaling or Miswiring Conditions
  • Clamping Voltage of 40 V at 27-A of 8/20-µs Surge Current
  • Standoff Voltage: ±33 V
  • Small 3 mm x 3 mm SON Footprint
  • Survives Over 5,000 Repetitive Strikes of 25-A 8/20-µs Surge Current
  • Robust Surge Protection
    • IEC61000-4-5 (8/20 µs): 27 A
    • IEC61643-321 (10/1000 µs): 3 A
  • Low Leakage Current
    • 2.5-nA Typical at 27°C
    • 450-nA Maximum at 85°C
  • Low Capacitance: 54 pF
  • Integrated Level 4 IEC 61000-4-2 ESD Protection
  • Protection Against 1-kV, 42-Ω IEC 61000-4-5 Surge Test for Industrial Signal Lines
  • Bidirectional Polarity Enables Protection Against Bipolar Signaling or Miswiring Conditions
  • Clamping Voltage of 40 V at 27-A of 8/20-µs Surge Current
  • Standoff Voltage: ±33 V
  • Small 3 mm x 3 mm SON Footprint
  • Survives Over 5,000 Repetitive Strikes of 25-A 8/20-µs Surge Current
  • Robust Surge Protection
    • IEC61000-4-5 (8/20 µs): 27 A
    • IEC61643-321 (10/1000 µs): 3 A
  • Low Leakage Current
    • 2.5-nA Typical at 27°C
    • 450-nA Maximum at 85°C
  • Low Capacitance: 54 pF
  • Integrated Level 4 IEC 61000-4-2 ESD Protection

The TVS3301 device shunts up to 27 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 TVS3301 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 TVS3301 has a ±33-V operating range to enable operation in systems that require protection against reverse wiring conditions.

In addition, the TVS3301 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 TVS3301 against 5000 repetitive surge strikes at 125°C with no shift in device performance.

The TVS3301 is part of TI’s Flat-Clamp family of surge devices. For a deeper look at the Flat-Clamp family, refer to the Flat-Clamp Surge Protection Technology for Efficient System Protection white paper.

The TVS3301 device shunts up to 27 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 TVS3301 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 TVS3301 has a ±33-V operating range to enable operation in systems that require protection against reverse wiring conditions.

In addition, the TVS3301 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 TVS3301 against 5000 repetitive surge strikes at 125°C with no shift in device performance.

The TVS3301 is part of TI’s Flat-Clamp family of surge devices. For a deeper look at the Flat-Clamp family, refer to the Flat-Clamp Surge Protection Technology for Efficient System Protection white paper.

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Technical documentation

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Type Title Date
* Data sheet TVS3301 33-V Bidirectional Flat-Clamp Surge Protection Device datasheet (Rev. A) PDF | HTML 06 Dec 2018
Functional safety information TVS3301 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 27 Sep 2021
Application note 16-Bit 8-Channel PLC Analog Input Module with High Voltage (±150 V) Common Mode 27 Apr 2020
Application note Protecting I/O modules from surge events 04 Feb 2019
Application note TVS Surge Rating: Power vs. Current 12 Nov 2018
White paper Demystifying surge protection 06 Nov 2018
User guide Flat Clamp TVS Evaluation Module—Adaptor Boards 10 Sep 2018
Application note How to select a Surge Diode 29 Aug 2018

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

FLAT-CLAMP-TVS-EVM — TVSxx0x precision surge protection diode evaluation module

The FLAT-CLAMP-TVS-EVM (Precision Surge Protection Diode Adaptor Board Evaluation Module) demonstrates the characteristics, operation, and use of the TVSxx0x family of devices. The TVSxx0x family of devices are precision clamps that keep ultra-low and flat clamping voltages during transient (...)
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Simulation model

TVS3301 PSpice Transient Model TVS3301 PSpice Transient Model

Simulation tool

PSPICE-FOR-TI PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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TIDA-010008 — Flat-Clamp TVS based Reference Design for Protection Against Transient for Grid Applications

This reference design features multiple approaches for  protecting AC or DC analog input, DC analog output, AC or DC binary input, digital output with a high side or low side driver, LCD bias supply, USB interfaces (power and data) and onboard power supplies with 24, 12 or 5V input used in (...)
Reference designs

TIDA-010044 — NAMUR PLC Digital input with fault protection and diagnostics reference design

The NAMUR proximity sensor is widely used in industrial control when a special requirement on maximum energy is to be fulfilled by the sensor. This in turn dictates special requirements on the PLC digital input designed to interface with such sensor with regard to accuracy, and reliability. This (...)
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