WMSIC Electronic Components

Leiditech SDA1211CDN

ModelSDA1211CDN
PackageDFN1006
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Leiditech SDA1211CDN
Type
LEIDITECH
Minimum package
10000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LEIDITECH
Electronic Component
SDA1211CDN
Electronic Component
1
Package
DFN1006
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.006g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
30pF
Electronic Component
BM0265085222
Voltage
22.5V
Electronic Component
IEC 61000-4-5;IEC 61000-4-2
Current(Ir)
200nA
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.

SDA1211CDN 产品概述

一、产品简介

SDA1211CDN 是 Leiditech(雷卯电子)推出的一款单路瞬态抑制二极管(TVS),封装为 DFN1006,专为保护敏感电子接口免受静电放电(ESD)和雷电浪涌(Surge)冲击而设计。器件标称反向工作电压(Vrwm)为 12V,具有低结电容(Cj ≈ 30pF)和极低的反向漏电流(Ir ≈ 0.2μA),适合保护对带宽和静态电流要求较高的信号线与供电线路。

二、主要特性

  • 反向工作电压 Vrwm:12V(典型系统工况下)
  • 击穿电压 VBR:13.3V(器件进入雪崩区域的参考电压)
  • 典型钳位电压 Vc:约 15.5V(标准测试条件下)
  • 峰值脉冲功率 Ppp:180W(波形 8/20μs)
  • 最大钳位电压(峰值脉冲条件下):可达 22.5V(标称值,用于极端浪涌情形)
  • 反向漏电流 Ir:≈0.2μA(200nA,常温)
  • 结电容 Cj:≈30pF,适合高速信号线保护
  • 通道数:单路
  • 防护等级:符合 IEC 61000-4-2(ESD)与 IEC 61000-4-5(浪涌)相关规范
  • 封装:DFN1006(微型表面贴装,利于空间受限设计)

三、典型应用场景

  • 汽车与工业 12V 系统中对数据线或线缆接口的浪涌保护
  • 通信接口(如 CAN、LIN、UART 等)和外围电源端口的过压防护
  • 工业控制、楼宇设备、安防监控等需满足抗静电与抗浪涌要求的场合
  • 对带宽和信号完整性有要求的高速数据线路(受益于低结电容)

四、电气性能说明(要点解读)

  • Vrwm = 12V:表明器件在反向静态情况下最大工作电压为 12V,建议在该电压或以下长期工作以避免频繁进入雪崩区。
  • VBR = 13.3V:当电压上升超过此值时器件进入击穿区并开始导通以吸收能量。VBR 与 Vrwm 相近,适合保护 12V 类系统。
  • Vc(典型)≈15.5V:在规定脉冲电流下的典型夹位电压,表示器件在保护动作时能将尖峰电压钳制在较低水平,减小后端电路受损概率。
  • Ppp = 180W@8/20μs:表明器件能承受单次 8/20μs 波形的 180W 峰值能量冲击,适用于处理中小幅度的外部浪涌事件。
  • Cj = 30pF:低结电容有利于保持高速信号的传输特性,降低对信号带宽的影响。
  • Ir ≈0.2μA:极低的漏电流适合电源敏感或低功耗系统,减少静态功耗影响。

五、封装与布局建议

  • DFN1006(1.0 × 0.6 mm 级别)占板面积小,适合高密度 PCB 设计。
  • PCB 布局建议将器件尽量靠近需要保护的接口,并保持导线最短以降低寄生感抗与电感环路面积。
  • 在器件 GND 引脚与系统地之间采用实心地或短而粗的回流路径,必要时在附近添加接地过孔以增强热与电流散流能力。
  • 对于高能量应用,可在入口处配合熔断器、PTC 或电感器件形成多级防护以提升整体可靠性。

六、使用注意事项

  • 工作电压:长期工作时应确保电路电压不超过 Vrwm(12V),避免器件长期处于击穿区域而引起发热或老化。
  • 能量管理:Ppp 为单脉冲额定值,多次或长时间的高能脉冲可能导致器件热损伤,应根据实际浪涌频率与能量做裕量设计。
  • 温度与封装:DFN 封装散热受限,需在 PCB 设计中考虑散热路径;高温环境下漏电流和击穿特性会发生变化,应按照器件数据手册做温度补偿与选型。
  • 测试与验证:在目标系统中进行实际 ESD 与 Surge 测试验证,确保满足 IEC 61000 系列要求。

七、订购信息与替代

  • 型号:SDA1211CDN
  • 品牌:Leiditech(雷卯电子)
  • 包装:DFN1006,常见为卷带盘装(Tape & Reel)
  • 若需替代器件,应匹配关键参数:Vrwm≈12V、VBR≈13.3V、Vc/Clamping 能力、Ppp≥180W、Cj≈30pF、单路封装需求,并确认浪涌与 ESD 兼容性。

总结:SDA1211CDN 是一款面向 12V 类系统的高性能单路 TVS 二极管,具备低结电容、低漏电流与较强的 8/20μs 浪涌吸收能力,适用于对体积、带宽与静态功耗有较高要求的工业与汽车电子接口保护场合。购买与设计使用前,建议结合具体系统的浪涌能量、重复脉冲情况与热管理方案进行评估。

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