Texas Instruments TSM24B Unidirectional Surge Protection Diode
Texas Instruments TSM24B Unidirectional Surge Protection Diode robustly shunts up to 20A of IEC 61000-4-5 fault current to protect systems from high power transients or lightning strikes. The TSM24B 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 TSM24B clamps during a surge event, keeping system exposure below 33V (typical) at IPP = 20A.
Additionally, the Texas Instruments TSM24B 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.
Features
- Robust surge protection
- IEC61000-4-5 (8/20µs) of 20A
- A low clamping voltage of 33V (typical) at 20A 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 24pF (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
- Controller area network (CAN)
- PLC I/O modules
- 24V power lines or digital inputs or output lines
- Appliances
- Medical equipment
- Motor drivers
Functional Block Diagram
Related Development Tool
Texas Instruments ESDEVM Evaluation Module (EVM)
Comes with all traditional ESD footprints in order to be able to test any number of devices.
Publicado: 2023-12-13
| Actualizado: 2023-12-19