The SMBJ8.5CA-13-F is a bi-directional transient voltage suppressor (TVS) diode designed to protect sensitive electronics from voltage transients induced by inductive load switching and lightning. This component is capable of dissipating up to 600W of peak pulse power with a 10/1000μs waveform. It features a standoff voltage of 8.5V and a maximum clamping voltage of 14.4V at a peak pulse current of 41.7A. The diode is housed in an SMB package, known for its compact footprint and suitability for high-density board layouts.
The device's glass passivated die construction ensures reliability and stability over a wide temperature range, from -55°C to +150°C. It is designed for both commercial and industrial applications, offering excellent clamping capability and a fast response time to transient over-voltage events. The SMBJ8.5CA-13-F is also characterized by its low incremental surge resistance, which enhances its ability to protect against multiple surge events.
Transient Voltage Suppressors
Transient Voltage Suppressors (TVS) diodes are semiconductor devices designed to protect sensitive electronics from voltage spikes and transients. These components work by clamping over-voltage transients to a safe level that the protected circuit can withstand, thereby preventing damage to the electronic components. TVS diodes are widely used in various applications, including power supply circuits, communication lines, and data lines, where they offer a first line of defense against voltage transients such as lightning strikes, electrostatic discharge (ESD), and inductive load switching.
When selecting a TVS diode, engineers should consider parameters such as the peak pulse power dissipation, standoff voltage, clamping voltage, and peak pulse current. The choice of these parameters depends on the specific requirements of the application, including the maximum transient voltage that can be tolerated, the duration of the transient, and the maximum current the device must handle.
TVS diodes are available in uni-directional and bi-directional configurations. Uni-directional diodes provide protection in one direction and are typically used in DC circuits, while bi-directional diodes can protect in both directions and are suitable for AC applications or where the polarity of the transient is not known.
The package type and size of the TVS diode are also important considerations, especially in applications where space is limited. The SMB package of the SMBJ8.5CA-13-F, for example, offers a compact solution that can be easily integrated into a variety of electronic assemblies. Engineers should also ensure that the TVS diode they select is capable of withstanding the environmental conditions of the application, including temperature extremes.