DS9502中文资料ESD保护二极管数据手册ADI规格书

描述 Description

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.

特性 Features

• 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

简介

DS9502属于电路保护的TVS-二极管。由ADI制造生产的DS9502TVS - 二极管TVS 二极管是一种半导体器件，可用于限制或阻止特定电压电平的浪涌。该系列产品使用二极管（只能单向导电的元器件）进行设计。TVS 是 Transient Voltage Suppression/Suppressor（瞬态电压抑制/抑制器）的首字母缩写。类型包括转向（轨至轨）或齐纳，具有单向通道、双向通道、电压 – 反关态、电压 – 击穿、电压 – 箝位、电流 – 峰值脉冲、功率 – 峰值脉冲和电源线路保护等特征。