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ESD321
  • ESD321
  • ESD321
  • ESD321

ESD321

ACTIVE

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

Texas Instruments ESD321 Product Info

1 April 2026 4

Parameters

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

Package

SOT-5X3 (DYA)-2-1.28 mm² 1.6 x 0.8

Features

  • 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

Description

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.

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