WMSIC Electronic Components

LRC LR2105LT1G

ModelLR2105LT1G
PackageSOT-23
BrandLRC
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
LRC LR2105LT1G
Type
LRC
Minimum package
3000 未知

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LRC
Electronic Component
LR2105LT1G
Electronic Component
1
Package
SOT-23
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.031g
Electronic Component
1
Cj- Capacitor
30pF
Electronic Component
BM0230041404
Operating Temperature
55℃~+150℃
Voltage
34V;36V;39V
Electronic Component
IEC 61000-4-2
Current(Ir)
200nA
Voltage(VBR)
32V

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

LR2105LT1G 产品概述

一、概述

LR2105LT1G 是乐山无线电(LRC)推出的一款用于敏感电子接口的 ESD 二极管,采用 SOT-23 小外形封装,专为保护低压信号线和接口免受静电放电及浪涌脉冲损害而设计。器件工作温度范围宽(-55℃ 至 +150℃),适合工业、通信及汽车等对环境可靠性有较高要求的场合。

二、主要电气参数

  • 钳位电压(典型/可选):34V、36V、39V(根据工作点与工艺略有差异)
  • 反向工作电压 Vrwm:24V
  • 击穿电压(Vbr):32V
  • 峰值脉冲功率 Ppp:350W(8/20µs 波形)
  • 峰值脉冲电流 Ipp:8A(8/20µs)
  • 结电容 Cj:约 30pF(适合高速数据线)
  • 反向漏电流 Ir:200nA(典型,低泄漏利于高阻抗电路)

三、保护性能与认证

LR2105LT1G 满足 IEC 61000-4-2 ESD 抗扰度要求,能承受常见的人体模型与接触放电情形下的冲击。350W/8/20µs 的脉冲承受能力以及 8A 峰值电流能力,保证在较强的浪涌和瞬态事件中对后端电路提供有效钳位保护。

四、应用场景

  • USB、HDMI、Ethernet 等高速信号接口的外部防护(低电容 30pF 对信号完整性影响小)
  • 手机、平板、笔记本等消费类电子的接口保护
  • 工业控制、楼宇对讲与仪器仪表的 I/O 口防护
  • 汽车电子低压通信线束与传感器信号线(需注意整车等级认证时的系统设计)

五、封装与布局建议

SOT-23 封装便于在 PCB 上密集布置,建议将 ESD 器件尽量靠近被保护的输入端(连接器或接口引脚)放置,缩短 PCB 铜皮到地或参考地的回流路径,以降低感性串扰与钳位延迟。对于差分或多线接口,应按线路分别安排或选用对称布置,确保一致的保护响应。

六、选型与使用注意

  • 工作电压匹配:Vrwm=24V 适合 24V 及以下系统;若系统有更高常态电压,应选择更高 Vrwm 的器件或级联保护方案。
  • 信号完整性:30pF 结电容对高速信号有影响,选型时需评估最高速率下的容性负载影响。
  • 漏电流限制:Ir 约 200nA,对高阻输入电路较友好,但在超低电流测量系统仍需验证对测量精度的影响。
  • 热与可靠性:在持续高能脉冲环境,应评估器件温升及 PCB 散热路径,必要时采用多级或并联保护设计。

总结:LR2105LT1G 以其高脉冲承受能力、低结电容与宽温度范围,适合在各种需要稳健 ESD/浪涌保护且对信号完整性有要求的应用中使用。合理的 PCB 布局与电压匹配是发挥其性能的关键。若需封装引脚图或更多电气特性曲线,可参考 LRC 官方数据手册以获得完整设计信息。

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