Texas Instruments TSM24A/TSM24A-Q1 24V Unidirectional TVS Diode

Texas Instruments TSM24A/TSM24A-Q1 24V Unidirectional TVS Surge Protection Diode robustly shunts up to 60A 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 2.5kV IEC 61000-4-5 open circuit voltage coupled through a 42Ω impedance. The TSM24A/TSM24A-Q1 clamps during a surge event, keeping system exposure below 38V (typical) at IPP = 60A.

Additionally, the Texas Instruments TSM24A/TSM24A-Q1 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. The TSM24A-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

Robust surge protection
- IEC61000-4-5 (8/20 µs): 60A
A low clamping voltage of 38V (typical) at 60A for 8/20µs surge current protects downstream components
Unidirectional polarity for optimized clamping performance on single-ended data lines and power rails
24V working voltage for protecting signals on 12V systems

Low leakage current of 75nA (maximum)
Low I/O capacitance of 54pF (typical)
Integrated IEC 61000-4-2 ESD protection
- ±30kV contact discharge
- ±30kV air-gap discharge
Small SOT-23 leaded package to minimize board space and allow for automatic optical inspection (AOI)

Applications

Industrial sensors
USB Type-C™ V_BUS
PLC I/O modules
24V power lines, digital input, or output lines

Appliances
Medical equipment
Motor drivers

Texas Instruments TSM24A/TSM24A-Q1 24V Unidirectional TVS Diode

Features

Applications

Pin Configuration & Functions

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