WMSIC Electronic Components

Leiditech SLVU2.8-4

ModelSLVU2.8-4
PackageSOP-8
BrandLeiditech
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Leiditech SLVU2.8-4
Type
LEIDITECH
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LEIDITECH
Electronic Component
SLVU2.8-4
Electronic Component
1
Package
SOP-8
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.108g
Electronic Component
1
Cj- Capacitor
2pF
Electronic Component
BM0227780477
Voltage
22V
Electronic Component
IEC 61000-4-4;IEC 61000-4-5;IEC 61000-4-2
Current(Ir)
1uA
Voltage(VBR)
3V
Electronic Component
Electronic Component

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

SLVU2.8-4 产品概述

一、产品简介

SLVU2.8-4 是 Leiditech(雷卯电子)推出的一款双向瞬态电压抑制(TVS)二极管,封装为 SOP-8。器件专为低压系统和敏感信号线提供瞬态过压、雷击浪涌和静电放电(ESD)保护而设计,兼顾低结电容和高峰值脉冲吸收能力,适用于对信号完整性和泄漏电流要求较高的场合。

二、主要电气参数

  • 反向工作电压 Vrwm:2.8 V(双向)
  • 击穿电压 Vbr(min):3.0 V
  • 钳位电压 Vc(典型):22 V(Ipp 条件下)
  • 峰值脉冲电流 Ipp(10/1000 μs):24 A
  • 反向静态电流 Ir:1 μA(在 Vrwm 下)
  • 结电容 Cj:2 pF(低电容,利于高速信号)
  • 防护等级:符合 IEC 61000-4-2、IEC 61000-4-4、IEC 61000-4-5 等抗扰度要求
  • 封装:SOP-8

三、性能特点

  • 双向结构,可对称吸收正、负向瞬态脉冲,适用于交流或对称信号保护。
  • 极低的结电容(2 pF),对高速数据线和差分信号影响小,能在不破坏信号完整性的前提下提供保护。
  • 高能量吸收能力(Ipp 24 A @10/1000 μs),对潮流浪涌和雷击能量有良好抑制能力,钳位电压在冲击时可控制在约22 V。
  • 低漏电流(1 μA),适合电池供电和低功耗设备使用。
  • SOP-8 封装,便于表面贴装及自动化装配,热稳定性和机械强度适合工业级应用。

四、典型应用场景

  • 低压供电轨保护(约 2.8 V 工作点的电源总线)。
  • 敏感接口和通信线路的浪涌/ESD 保护(如移动终端、工业通讯模块、传感器接口等)。
  • 高速差分信号线或控制引脚的保护,因低 Cj 特别适合不会显著影响信号频带的场合。
  • 具备雷击/浪涌风险的电源输入与外部接口保护。

五、选型与布局建议

  • 确认系统正常工作电压与 Vrwm 匹配:SLVU2.8-4 的 Vrwm 为 2.8 V,适用于以 2.8 V 左右为工作点的线路;若系统为 3.3 V 或 5 V 工作电压,应选用相应 Vrwm 更高的型号。
  • 将 TVS 器件放置在接插件或易受干扰的引脚附近,尽量缩短到受保护线与接地的走线长度以减小寄生电感。
  • 对于双向器件,按器件说明书将两端并联于需保护的线路上;确保接地/参考平面连续且低阻抗。
  • 对于高能量冲击,可配合串联熔断器、限流电阻或缓冲网络使用,以分散能量并保护 PCB 及其它元件。

六、可靠性与合规

SLVU2.8-4 针对静电放电(ESD)、电快速瞬变(EFT)和浪涌(Surge)进行了设计与测试,符合 IEC 61000-4-2、4-4、4-5 等相关抗扰规范要求。低漏电流和稳定的钳位特性保证在长期工作中对电路的可靠保护,同时降低对系统待机功耗的影响。

总结:SLVU2.8-4 以其低结电容、低漏电流与较高的脉冲能量承受能力,适合对信号完整性和低功耗有较高要求的低压接口及电源保护场合。在选型与布局时注意与系统工作电压匹配并优化 PCB 布局,即可充分发挥其防护性能。

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