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UMW SD15
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- UMW SD15
- Type
- UMW
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- UMW
- Electronic Component
- SD15
- Electronic Component
- 1
- Package
- SOD-323
- Electronic Component
- Electronic Component
- Type
- ESD
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.028g
- Electronic Component
- 1
- Channel Count
- Electronic Component
- Cj- Capacitor
- 120pF
- Electronic Component
- BM0230945356
- Voltage
- 24V
- Electronic Component
- IEC 61000-4-4；IEC 61000-4-2
- Current(Ir)
- 1uA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SD15 产品概述
一、概述
SD15 是友台半导体（UMW）推出的一款单路单向瞬态抑制二极管（TVS），封装为 SOD-323，专为对抗静电放电（ESD）和电快速瞬变（EFT）而设计。器件针对一般电子接口与电源线的瞬态过电压保护，具有高脉冲能量吸收能力和低反向漏电的特性，适合消费类、工业与通信设备的端口保护使用。
二、主要电气参数
- 极性：单向
- 反向工作电压 Vrwm：15 V
- 击穿电压（Vbr）：16.7 V
- 钳位电压（Vclamp）：24 V（典型）
- 峰值脉冲功率 Ppp：350 W（8/20 μs 波形）
- 反向电流 Ir：≤1 μA
- 结电容 Cj：≈120 pF
- 通道数：单路
- 防护等级：符合 IEC 61000-4-4（EFT）与 IEC 61000-4-2（ESD）测试
- 封装：SOD-323
三、特点与优势
- 高脉冲吸收能力：350 W（8/20 μs）能有效吸收来自雷击或电源瞬变的能量，提升系统抗扰度。
- 低泄漏电流：反向漏电≤1 μA，有利于降低静态功耗，适用于电源管理与低功耗模块。
- 小巧封装：SOD-323 体积小，便于密集布板与自动化贴装。
- 单向保护：对正向受保护方向提供低导通压降，对多数低压电源和信号线有良好适配。
- 标准兼容：通过 IEC 61000-4-2/4-4 规范测试，便于系统设计满足电磁兼容要求。
注意：Cj≈120 pF 对高速差分信号（如高速 USB、LVDS 等）可能影响信号完整性，不建议用于对结电容敏感的高速接口。
四、典型应用场景
- USB/串口等低速或电源相关接口的浪涌与静电保护（适用于对电容容忍度较高的线路）。
- 工业控制、仪表和传感器接口的瞬态浪涌防护。
- 消费电子设备外部接口、充电口与外接电源线路保护。
- 通信设备与基板接口的局部防护单元（在系统级防护中作为前端器件）。
五、封装与布局建议
- 尽量将 SD15 放置在被保护器件与外部接口之间的最短路径上，靠近受保护引脚布置。
- 将器件地端与系统接地通过短、粗的回流路径相连，避免长回流环路造成地电位抖动。
- SOD-323 封装焊盘设计按厂商推荐尺寸制板，确保良好湿润与可靠焊接。
- 对于高能量脉冲场景，评估周边金属层与热散设计，确保脉冲能量不会在局部引起过热。
六、可靠性与合规
SD15 按照 IEC 61000-4-2（静电放电）与 IEC 61000-4-4（电快速瞬变）进行验证，典型 8/20 μs 波形下能承受 350 W 峰值脉冲能量。出于可靠性考虑，建议在样机与量产前进行系统级 EMC 测试，验证在目标应用环境下的实际防护效果。
结语：SD15 在中低压电源与普通信号线的瞬态保护中提供了小尺寸、高能量吸收与低泄漏的平衡方案。选择时请结合目标接口对结电容与钳位电压的具体要求，进行电路仿真与实测验证。
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