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概览
SM712 瞬态电压抑制器 (TVS) 二极管专为多点数据传输标准 RS-485 应用中的不对称（12V 至 -7V）保护而设计。SM712 可用于保护器件免受由静电放电 (ESD)、电气快速瞬变 (EFT) 和闪电引起的瞬态电压的影响。
功能
- 400 瓦峰值脉冲功率 (tp = 8/20 µs)
- 不对称数据线路瞬变保护符合以下标准
- IEC 61000-4-2 (ESD) ± 15 kV (air), ± 8 kV (contact)
- IEC 61000-4-4 (EFT) 40 A (5/50 ns)
- IEC 61000-4-5（雷电）12 A (8/20 µs)
- 保护两条 +12 V 至 -7 V 线路
- 低电容
- 钳位电压低
- 固态硅雪崩技术
- Lead-free, RoHS and WEEE compliant
| 文档 | Release Date | Type |  |
|---|---|---|---|
| SM712 数据表 | 2019-02-07 | | |
| TVS Peak Pulse Power vs. Pulse Duration | 2024-08-12 | | |
| TVS Power Derating Versus Temperature | 2025-02-13 | | |
应用
- 对具有扩展共模范围的 RS-485 收发器提供保护
- Security systems
- 自动取款机
- HFC 系统
- 网络
Inventory
| Product | 国家/地区 | 经销商 | Qty | Buy |
|---|
资源
Semtech 保护产品
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