SPT01-335DEE datasheet(9/16 Pages) STMICROELECTRONICS

部件名	SPT01-335DEE

功能描述	Automation sensor transient and overvoltage protection

PDF	16 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

9 / 16 page

DocID15200 Rev3

9/16

SPT01-335DEE

Evaluation of the clamping voltage

5.1.2

Life time considerations

Life time of the product is calculated to exceed 10 years. The key parameters to consider

are the ambient temperature (Tamb < 100 °C), the power supply voltage (VCC < 30 V), and

the current in the reverse blocking diode (IF = 0.1 A switching at 0.5 Hz with 50% duty cycle,

the stand-by current being less than 1.5 mA).

For higher current or higher switching frequency operation, the life time should be calculated

considering the peak and average junction temperature.

This junction temperature can be reduced by reducing the thermal resistance of the

clamping diode, D1 normally. This can be done by increasing its PCB copper tab surface

SCu.

SPT01-335DEE 数据表(PDF) 9 Page - STMicroelectronics