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ESDS552
  • ESDS552
  • ESDS552

ESDS552

ACTIVE

12V two-channel bidirectional ESD and surge protection diode

Texas Instruments ESDS552 Product Info

1 April 2026 4

Parameters

Number of channels

2

Vrwm (V)

12

Bi-/uni-directional

Bi-directional

Package name

SOT-23-3

Peak pulse power (8/20 μs) (max) (W)

600

IO capacitance (typ) (pF)

9.5

IEC 61000-4-2 contact (±V)

30000

IEC 61000-4-5 (A)

25

Features

ESD Protection

Clamping voltage (V)

23.8

Dynamic resistance (typ)

0.4

Interface type

RS-485/432/422/232

Breakdown voltage (min) (V)

14

IO leakage current (max) (nA)

50

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Package

SOT-23 (DBZ)-3-6.9204 mm² 2.92 x 2.37

Features

  • IEC 61000-4-5 surge protection:
    • 25A (8/20µs)
  • IEC 61000-4-2 ESD protection:
    • ±30kV contact discharge
    • ±30kV air gap discharge
  • 12V working voltage
  • Bidirectional polarity to support positive and negative voltage swings
  • 2 channel device provides complete ESD/Surge protection with single component
  • Small, leaded SOT-23 allows low cost automatic optical inspection (AOI)
  • IEC 61000-4-5 surge protection:
    • 25A (8/20µs)
  • IEC 61000-4-2 ESD protection:
    • ±30kV contact discharge
    • ±30kV air gap discharge
  • 12V working voltage
  • Bidirectional polarity to support positive and negative voltage swings
  • 2 channel device provides complete ESD/Surge protection with single component
  • Small, leaded SOT-23 allows low cost automatic optical inspection (AOI)

Description

The ESDS552 is a bidirectional ESD and surge protection diode for RS-485 and RS-422 interface protection. The ESDS552 is rated to dissipate ESD strikes beyond the maximum level specified in the IEC 61000-4-2 international standard (±30kV Contact, ±30kV Air-gap). The device can clamp 8/20µs surges with peak pulse currents up to 25A in accordance with the IEC 61000-4-5 standard.

The low dynamic resistance and low clamping voltage help protect systems against transient events. This protection is key because industrial systems require a high level of robustness and reliability.

The ESDS552 is available in a small leaded SOT-23 (DBZ) package.

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