Home Passive and discrete Diodes ESD protection diodes
Home
Passive and discrete
Diodes
ESD protection diodes

ESD321

ACTIVE

0.9pF 3.6V ±30kV ESD protection diode with 6.8V 16A TLP clamping for USB 2.0

Order now
Data sheet

ESD321

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Vrwm (V) 3.6 Bi-/uni-directional Uni-Directional Package name DFN1006, SOD523 Peak pulse power (8/20 μs) (max) (W) 40 IO capacitance (typ) (pF) 0.9 IEC 61000-4-2 contact (±V) 30000 IEC 61000-4-5 (A) 6 Clamping voltage (V) 6.8 Dynamic resistance (typ) 0.13 Interface type Audio, Ethernet, GPIO, Keypad, USB 2.0 Breakdown voltage (min) (V) 4.5 IO leakage current (max) (nA) 10 Rating Catalog Operating temperature range (°C) -55 to 150
Number of channels 1 Vrwm (V) 3.6 Bi-/uni-directional Uni-Directional Package name DFN1006, SOD523 Peak pulse power (8/20 μs) (max) (W) 40 IO capacitance (typ) (pF) 0.9 IEC 61000-4-2 contact (±V) 30000 IEC 61000-4-5 (A) 6 Clamping voltage (V) 6.8 Dynamic resistance (typ) 0.13 Interface type Audio, Ethernet, GPIO, Keypad, USB 2.0 Breakdown voltage (min) (V) 4.5 IO leakage current (max) (nA) 10 Rating Catalog Operating temperature range (°C) -55 to 150
SOT-5X3 (DYA) 2 1.28 mm² 1.6 x 0.8 X1SON (DPY) 2 0.6 mm² 1 x 0.6
  • IEC 61000-4-2 Level 4 ESD protection:
    • ±30kV contact discharge
    • ±30kV air gap discharge
  • IEC 61000-4-4 EFT protection:
    • 80A (5/50ns)
  • IEC 61000-4-5 surge protection:
    • 6A (8/20µs)
  • IO capacitance: 0.9pF (typical)
  • DC breakdown voltage: 4.5V (minimum)
  • Low leakage current: 0.1nA (typical)
  • Extremely Low ESD clamping voltage:
    • 6.8V at 16A TLP (I/O to GND)
    • RDYN: 0.13Ω (I/O to GND)
  • Industrial temperature range: –40°C to +125°C
  • Industry standard 0402 (DFN1006P2) and SOD-523 packages
  • IEC 61000-4-2 Level 4 ESD protection:
    • ±30kV contact discharge
    • ±30kV air gap discharge
  • IEC 61000-4-4 EFT protection:
    • 80A (5/50ns)
  • IEC 61000-4-5 surge protection:
    • 6A (8/20µs)
  • IO capacitance: 0.9pF (typical)
  • DC breakdown voltage: 4.5V (minimum)
  • Low leakage current: 0.1nA (typical)
  • Extremely Low ESD clamping voltage:
    • 6.8V at 16A TLP (I/O to GND)
    • RDYN: 0.13Ω (I/O to GND)
  • Industrial temperature range: –40°C to +125°C
  • Industry standard 0402 (DFN1006P2) and SOD-523 packages

The ESD321 is a uni-directional TVS ESD protection diode featuring low dynamic resistance and low clamping voltage. The ESD321 is rated to dissipate ESD strikes up to ±30kV per the IEC 61000-4-2 international standard (greater than Level 4).

The ultra-low dynamic resistance (0.13Ω) and extremely low clamping voltage (6.8V at 16A TLP) ensure system level protection against transient events. This device has a low capacitance of 0.9pF IO capacitance making it suitable for protecting interfaces such as USB 2.0 and Ethernet 10/100/1000Mbps.

The ESD321 is offered in the industry standard 0402 (DPY/DFN1006P2) and SOD-523 (DYA) packages.

The ESD321 is a uni-directional TVS ESD protection diode featuring low dynamic resistance and low clamping voltage. The ESD321 is rated to dissipate ESD strikes up to ±30kV per the IEC 61000-4-2 international standard (greater than Level 4).

The ultra-low dynamic resistance (0.13Ω) and extremely low clamping voltage (6.8V at 16A TLP) ensure system level protection against transient events. This device has a low capacitance of 0.9pF IO capacitance making it suitable for protecting interfaces such as USB 2.0 and Ethernet 10/100/1000Mbps.

The ESD321 is offered in the industry standard 0402 (DPY/DFN1006P2) and SOD-523 (DYA) packages.
filter Find other ESD protection diodes
Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
ESD341 ACTIVE 0.66-pF ±3.6-V ±30-kV ESD protection diode with 5.4-A surge rating in 0201 package Bidirectional low cap ESD device

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 7
Top documentation Type Title Format options Date
* Data sheet ESD321 1-Channel 30kV ESD Protection Diode with Low Capacitance (< 1pF) in 0402 and SOD-523 Packages datasheet (Rev. C) PDF | HTML 04 Jun 2025
Application note ESD and Surge Protection for USB Interfaces (Rev. B) PDF | HTML 11 Jan 2024
Application brief ESD Protection for Keypads, Pushbuttons, and Side Keys PDF | HTML 30 Oct 2023
Application note ESD Packaging and Layout Guide (Rev. B) PDF | HTML 18 Aug 2022
Technical article Top 3 considerations for harsh industrial Ethernet PDF | HTML 04 Nov 2019
White paper Demystifying surge protection 06 Nov 2018
Application note IEC61000-4-2, IEC 61000-4-4 and IEC 61000-4-5 tests for TI’s protection devices 01 Jun 2015

Design & development

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

Evaluation board

ESDEVM — Universal evaluation module for ESD diode packages, including 0402, 0201, and others

The electrostatic-sensitive device (ESD) evaluation module (EVM) is a development platform for most of our ESD portfolio. The board comes with all traditional ESD footprints in order to test any number of devices. Devices can be soldered onto their respect footprint and then tested. For typical (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

ESD321 PSpice Model

SLVMDU6.ZIP (86 KB) - PSpice Model
Download
Simulation model

ESD321 S-Parameter Model

SLVMCQ5.ZIP (30 KB) - S-Parameter Model
Download
Package Pins CAD symbols, footprints & 3D models
SOT-5X3 (DYA) 2 Ultra Librarian
X1SON (DPY) 2 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos