WMSIC Electronic Components

RUILON RLSD32A121LC

ModelRLSD32A121LC
PackageSOD-323
BrandRUILON
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
RUILON RLSD32A121LC
Type
RUILON
Minimum package
3000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
RLSD32A121LC
Electronic Component
1
Package
SOD-323
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.029g
Electronic Component
1
Cj- Capacitor
1pF
Electronic Component
BM0259546538
Voltage
19V
Electronic Component
IEC 61000-4-2
Current(Ir)
1uA
Voltage(VBR)
13.3V

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

RLSD32A121LC 产品概述

一、产品简介

RLSD32A121LC 是 RUILON(瑞隆源)推出的一款双向瞬态电压抑制器(TVS),用于抑制突发过压和静电放电。器件封装为 SOD-323,体积小巧,适合对体积和引脚间距有严格要求的表面贴装电路。该型号针对 12V 级电源线和信号线的瞬态保护进行了优化,能够在发生电压脉冲或 ESD 事件时迅速钳位,保护下游元件免受损害。

二、主要电气参数

  • 极性:双向(Bi‑directional),适合对称信号或需要正负方向保护的线路
  • 反向截止电压 Vrwm:12 V(器件在该电压下为停止态)
  • 击穿电压 Vbr:约 13.3 V(典型值)
  • 钳位电压 Vc:约 19 V(在 Ipp=8 A、8/20 μs 波形下)
  • 峰值脉冲电流 Ipp:8 A(按 8/20 μs 波形)
  • 峰值脉冲功率 Ppp:300 W(按 8/20 μs 波形)
  • 反向电流 Ir:典型 1 μA(在 Vrwm 条件下)
  • 结电容 Cj:约 1 pF(低电容,适合高速信号路径)
  • 防护等级:符合 IEC 61000-4-2(静电放电抗扰度标准)

以上参数表明 RLSD32A121LC 能在有限能量的瞬态事件中提供可靠钳位,同时以极低的静态漏电和极小的结电容,减少对信号完整性的影响。

三、关键特性与优势

  • 双向保护:无需区分极性,简化设计,适用于交流、差分或双向信号线。
  • 低结电容(1 pF):非常适合高速数据线路(例如 USB、串行总线、差分信号等),对信号延迟和失真影响小。
  • 低漏电(1 μA):在待机或低功耗系统中影响极小,有利于节能设计。
  • 高冲击吸收能力:在 8/20 μs 波形下可承受 8 A 峰值脉冲电流和 300 W 峰值脉冲功率,适合一般工业浪涌和开关瞬态抑制。
  • 小型 SOD-323 封装:节省 PCB 面积,适合便携式和空间受限的应用。

四、典型应用场景

  • 12V 级电源线和点对点电源保护
  • 工业与仪器设备:保护输入/输出接口免受浪涌和静电损伤
  • 通信与数据线路:高速差分对、串行接口等,借助低 Cj 减少对信号的影响
  • 汽车电子(非高温/高功率主电路场合,需依据车规级要求评估)
  • 消费电子产品的外部接口(例如充电口、I/O 接口)保护

五、封装与 PCB 布局建议

  • 封装:SOD-323,表面贴装,便于回流焊装配。
  • 布局建议:将 TVS 器件尽量靠近被保护的接口或器件放置,减小引线和走线的寄生电感;双向器件两端直接连接到被保护线两端,无需方向区分。
  • 接地处理:若为单端到地保护,须确保接地铜箔宽且低阻抗;对差分或线对直接跨接器件时,避免将保护器件与远端地通过长走线相连。
  • 散热与功率限制:SOD-323 为小型封装,瞬态能量吸收后需通过 PCB 散热,长时间或重复的高能脉冲会导致器件发热或失效,应考虑外部限流或更高功率器件做级联保护。

六、使用注意事项与限制

  • RLSD32A121LC 为瞬态保护器件,不适合长期承受超过 Vrwm 的持续电压或连续大电流;一旦常态工作电压高于 Vrwm,应选用额定更高的型号或在前端加入限流器件。
  • SOD-323 为小封装,抗大能量连续冲击能力有限,重要系统建议做等级区分(如一级 TVS + 二级 TVS)或结合熔断/限流保护。
  • 在焊接和回流过程中,请严格遵循制造商对温度曲线的推荐,以免影响器件可靠性(详见产品 datasheet)。

七、测试与合规

  • 器件的峰值脉冲功率与脉冲电流指标基于 8/20 μs 波形测试,这是行业常用的浪涌测试规格。
  • 标注符合 IEC 61000-4-2,表明器件在静电放电抗扰方面达到相应测试标准,适用于对 ESD 抗扰有明确要求的设计。

八、采购与资料

  • 产品型号:RLSD32A121LC
  • 品牌:RUILON(瑞隆源)
  • 封装:SOD-323
  • 建议在设计前索取并严格参照厂家最新版 datasheet,确认温漂、典型波形与限值条件,以便在目标应用环境下进行可靠性评估与样机测试。

结论:RLSD32A121LC 以其双向保护、低结电容、低漏电和较高瞬态能量吸收能力,适合用于对空间和信号完整性有要求的接口与电源保护场合。合理的 PCB 布局和热管理,可充分发挥其在瞬态抑制中的保护作用。

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