WMSIC Electronic Components

WILLSEMI ESD54191CZ-2/TR ESD54191CZ

ModelESD54191CZ-2/TR
PackageDWN0603-2L
BrandWILLSEMI
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
WILLSEMI ESD54191CZ-2 / TR
Type
WILLSEMI
Minimum package
10000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
WILLSEMI
Electronic Component
ESD54191CZ-2/TR
Electronic Component
1
Package
DWN0603-2L
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.008g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
20pF
Electronic Component
BM0227692169
Operating Temperature
40℃~+85℃
Voltage
14V
Electronic Component
IEC 61000-4-5;IEC 61000-4-2

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

ESD54191CZ-2/TR 产品概述

ESD54191CZ-2/TR 是 WILLSEMI(韦尔)推出的一款低电容、双向瞬态电压抑制(TVS)二极管,专为保护5V类数据与信号线免受静电放电(ESD)和雷击浪涌等瞬态干扰而设计。器件封装为 DWN0603-2L,单路保护,具有高能量吸收能力与极低的漏电流,适用于空间受限且需可靠防护的电路板应用。

一、关键特性

  • 极性:双向(适配双向信号线与交流瞬态)
  • 反向工作电压 Vrwm:5.5 V(适合 5 V 系统)
  • 击穿电压(典型):8.1 V
  • 钳位电压 Vc(典型):14 V(Ipp 条件下)
  • 峰值脉冲电流 Ipp:13 A @ 8/20 μs
  • 峰值脉冲功率 Ppp:182 W @ 8/20 μs(Vc × Ipp 校验)
  • 反向漏电流 Ir:1 nA(高阻抗电路友好)
  • 结电容 Cj:20 pF(适合多数低速到中速信号线)
  • 工作温度:-40 ℃ ~ +85 ℃
  • 防护等级:符合 IEC 61000-4-5(浪涌)与 IEC 61000-4-2(静电放电)标准

二、典型应用场景

  • USB(5 V)设备与接口保护(尤其对低速与控制线)
  • 串行接口(UART、RS-232 在受限空间下的保护)
  • 通讯与I/O接口(GPIO、控制总线、传感器线)
  • 工业控制、仪表和消费电子产品的输入/输出端防护
    注:对于超高速差分信号(如高速 USB、HDMI、PCIe 等),需评估 20 pF 电容对信号完整性的影响。

三、性能说明与设计考量

  • 双向结构使器件能在正/负瞬态时都提供对称保护,适用于交流或双极性信号线。
  • 14 V 钳位电压在 13 A 峰值浪涌下能有效限制系统电压,降低后端器件受损风险。
  • 极低漏电(1 nA)确保对高阻电路或低功耗系统影响极小。
  • 20 pF 的结电容在很多控制与传输场景可接受,但对要求极低输入电容的高速差分通道需谨慎选型或通过外加阻抗匹配减缓影响。

四、PCB 布局与焊接建议

  • 尽量将 TVS 器件放置在接口与信号源之间、靠近连接器位置,保证保护路径最短。
  • 引线与接地回路应短且宽,接地面建议为连续的接地平面,以提高瞬态能量分散能力。
  • 对多线保护,可在必要处加串联微阻或共模元件以改善浪涌分配与信号完整性。
  • 根据封装型号处理回流焊工艺,遵循厂商推荐的焊接温度曲线以免损伤器件。

五、可靠性与合规

  • 通过 IEC 61000-4-2 与 IEC 61000-4-5 等等级测试,适用于抗静电与抗浪涌要求的产品设计。
  • 工作温区为 -40 ℃ 到 +85 ℃,适用于工业级与商用设备的常温与部分恶劣环境应用。

六、封装与订购信息

  • 型号:ESD54191CZ-2/TR
  • 品牌:WILLSEMI(韦尔)
  • 封装:DWN0603-2L(微小封装,适合高密度 PCB)
  • 通道数:单路(单线上下双向保护)

总结:ESD54191CZ-2/TR 以其双向保护、低漏电、高浪涌吸收能力和紧凑封装,适合用于 5V 等级的接口与信号线防护。在选型时请结合目标信号速率与允许的结电容值评估对信号完整性的影响,并在 PCB 布局上遵循最短保护路径与低阻接地的原则,以获得最佳防护效果。

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