DS9502

ESD保护二极管


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说明

This DS9502 is an ESD protection device for 1-Wire® interfaces. If used with circuits that already have strong ESD production at their I/O port, the ESD protection level is raised to more than 27kV (IEC 801-2 reference model). In case of abnormal ESD hits beyond its maximum ratings the DS9502 will eventually fail "short" thus preventing further damage.

During normal operation the DS9502 behaves like a regular 7.5V Zener diode. When the voltage exceeds the trigger voltage, the I/V characteristic of the device will "snapback" allowing the same or higher amount of current to flow, but at a significantly lower voltage. As long as a minimum current or voltage is maintained, the device will stay in the "snapback mode." If the voltage or the current falls below the holding voltage or holding current, the device will abruptly change to its normal mode and conduct only a small leakage current.
DS9502:典型应用电路 DS9502:典型应用电路 放大+

关键特性

  • Zener characteristic with voltage snap-back to protect against ESD hits
  • High avalanche voltage, low leakage and low capacitance avoid signal attenuation
  • Compatible to all 5V logic families
  • Space-saving, low-inductance TSOC surface-mount package
  • Symmetric dual-port bondout to maximize energy dissipation in protection device
  • Industrial temperature range
产品可靠性报告: DS9502.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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