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TSM24A
  • TSM24A
  • TSM24A

TSM24A

ACTIVE

24-V, unidirectional, 60A, TVS surge-protection diode

Texas Instruments TSM24A Product Info

1 April 2026 0

Parameters

Vrwm (V)

24

Bi-/uni-directional

Uni-Directional

Package name

SOT-23-3

Peak pulse power (8/20 μs) (max) (W)

2800

IEC 61000-4-5 (A)

60

Breakdown voltage (min) (V)

24.8

Number of channels

1

IO capacitance (typ) (pF)

54

Clamping voltage (V)

38

Package

SOT-23 (DBZ)-3-6.9204 mm² 2.92 x 2.37

Features

  • Robust surge protection:
    • IEC61000-4-5 (8/20 µs): 60 A
  • Low clamping voltage of 38 V (typical) at 60 A for 8/20 µs surge current protects downstream components
  • Unidirectional polarity for optimized clamping performance on single-ended data lines and power rails
  • 24 V working voltage for protecting signals on 12-V systems
  • Low leakage current of 75 nA (maximum)
  • Low I/O capacitance of 54 pF (typical)
  • Integrated IEC 61000-4-2 ESD protection:
    • ±30-kV contact discharge
    • ±30-kV air-gap discharge
  • Small SOT-23 leaded package to minimize board space and allow for automatic optical inspection (AOI)
  • Robust surge protection:
    • IEC61000-4-5 (8/20 µs): 60 A
  • Low clamping voltage of 38 V (typical) at 60 A for 8/20 µs surge current protects downstream components
  • Unidirectional polarity for optimized clamping performance on single-ended data lines and power rails
  • 24 V working voltage for protecting signals on 12-V systems
  • Low leakage current of 75 nA (maximum)
  • Low I/O capacitance of 54 pF (typical)
  • Integrated IEC 61000-4-2 ESD protection:
    • ±30-kV contact discharge
    • ±30-kV air-gap discharge
  • Small SOT-23 leaded package to minimize board space and allow for automatic optical inspection (AOI)

Description

The TSM24A is a part of TI’s surge protection device family. The TSM24A robustly shunts up to 60 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 2.5 kV IEC 61000-4-5 open circuit voltage coupled through a 42 Ω impedance. The TSM24A clamps during a surge event, keeping system exposure below 38 V (typical) at I PP = 60 A.

Additionally, the TSM24A is available in a small leaded SOT-23 (DBZ) package which is reduced in size by approximately 50 percent compared to the industry standard SMA package. The device is designed to have a minimal effect on the protected line due to extremely low device leakage.

For the bidirectional version of this device, please see TSM24CA.

The TSM24A is a part of TI’s surge protection device family. The TSM24A robustly shunts up to 60 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 2.5 kV IEC 61000-4-5 open circuit voltage coupled through a 42 Ω impedance. The TSM24A clamps during a surge event, keeping system exposure below 38 V (typical) at I PP = 60 A.

Additionally, the TSM24A is available in a small leaded SOT-23 (DBZ) package which is reduced in size by approximately 50 percent compared to the industry standard SMA package. The device is designed to have a minimal effect on the protected line due to extremely low device leakage.

For the bidirectional version of this device, please see TSM24CA.

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