WMSIC Electronic Components

CJ ESDBM3V3AH1

ModelESDBM3V3AH1
PackageDFNWB-2L(1.0x0.6)
BrandCJ
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
CJ ESDBM3V3AH1
Type
CJ
Minimum package
10000 未知

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJ
Electronic Component
ESDBM3V3AH1
Electronic Component
1
Package
DFNWB-2L(1.0x0.6)
Electronic Component
Electronic Component
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.01g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
18pF
Electronic Component
BM0235504925
Operating Temperature
55℃~+150℃
Voltage
7.6V
Electronic Component
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.

ESDBM3V3AH1 产品概述

ESDBM3V3AH1 是 CJ(江苏长电/长晶)推出的一款面向 3.3V 接口保护的单路双向 ESD 抑制器(TVS/ESD 二极管),采用超小型 DFNWB-2L (1.0 × 0.6 mm) 封装。器件针对工业级与消费类电子中经常遇到的静电放电和瞬态浪涌事件进行了优化设计,在极限环境下仍能提供可靠的浪涌钳位能力和低漏电、低结电容的特性,适合对 PCB 面积和信号完整性有较高要求的应用场景。

一、主要电气参数一览

  • 极性:双向(可在正/负向冲击下工作)
  • 反向截止电压 Vrwm:3.3 V(适配 3.3V 工作电压的信号线)
  • 击穿电压(Vbr):4 V(标称)
  • 钳位电压:7.6 V(在峰值脉冲电流 Ipp = 1 A 条件下)
  • 峰值脉冲电流 Ipp:1 A
  • 峰值脉冲功率 Ppp:60 W(典型测试条件下)
  • 反向电流 Ir:50 nA(低漏电,有利于功耗敏感电路)
  • 结电容 Cj:18 pF(适用于多数 I/O 接口,需评估对高速信号的影响)
  • 通道数:单路
  • 工作温度:-55 ℃ ~ +150 ℃(宽温度范围)
  • 防护等级/标准:IEC 61000-4-2(ESD 保护)
  • 封装:DFNWB-2L (1.0 × 0.6 mm)
  • 类型:ESD 抑制器(TVS)

二、关键特性与优势

  • 小尺寸封装:DFNWB-2L 1.0 × 0.6 mm,适合空间受限的移动设备、可穿戴设备、传感器模块及小型接口保护。
  • 双向结构:可同时应对正负极性瞬态脉冲,无需并联或额外极性处理,便于保护交流或双向信号线。
  • 钳位性能良好:在 1 A 脉冲条件下钳位电压约 7.6 V,能有效限制瞬态电压,保护后端电路元件。
  • 低漏电:50 nA 级别反向电流,适用于对静态电流敏感的低功耗系统。
  • 中等结电容:18 pF,平衡了保护能力与信号完整性,适合多数控制和通信接口(使用前建议针对特定高速线路评估影响)。
  • 宽温度与工业可靠性:-55 ℃ 至 +150 ℃ 运行能力,适合工业与恶劣环境应用。

三、典型应用场景

  • 3.3V 电平的数字接口保护:GPIO、UART、SPI、I2C(对于 I2C/高速总线需评估 Cj 是否合适)。
  • 连接器、接口的入口保护:用于外部引脚、传感器线缆、天线接口(需注意天线匹配与结电容影响)。
  • 消费电子与工业控制:便携设备、监控模块、工业传感器节点等需要抗静电干扰的场合。
  • PCB 前端保护元件:位于易受静电或接触放电位置的第一道保护。

四、封装与安装建议

  • 封装体积非常小,焊盘布局应遵循厂家推荐的 PCB land pattern,保证稳定焊接与良好导热。
  • 建议将 ESDBM3V3AH1 尽量靠近受保护的连接器或引脚放置,以缩短信号路径与回流路径,降低抑制效果衰减。
  • 为得到最佳 ESD 保护效果,应确保良好的接地回路,避免长且阻抗高的回流路径。对于金属外壳或接地面,宜提供低阻抗连接。
  • 对于高速差分对或对信号完整性要求极高的线路,需在 PCB 布局阶段评估 18 pF 结电容对上升/下降时间与眼图的影响,必要时采用低容版本或额外隔离元件。

五、使用注意事项

  • 不适用于高于 Vrwm 的直流电源轨;用于 3.3V 接口保护时请勿作为长期承受过高直流电压的器件。
  • 峰值脉冲能力有限(Ipp = 1 A),对于更高能量的浪涌或连续冲击,应选用更高功率或配合阻抗匹配网络。
  • 器件为单通道保护,如需多路保护可并行多只器件或选用多通道封装产品。
  • 在回流焊和生产流程中,遵循 IPC/JEDEC 推荐的焊接温度曲线以保证可靠焊接;避免超过器件最高允许温度。

六、可靠性与合规

  • 针对 IEC 61000-4-2 的 ESD 防护设计,适合满足常见接触与空放电防护需求。
  • 宽温运行范围与低漏电特性提升了在工业环境和低功耗系统的可靠性表现。

总结:ESDBM3V3AH1 是一款针对 3.3V 接口的单路双向 ESD 抑制器,凭借小尺寸、低漏电、适度结电容和良好的钳位特性,适合空间受限且需抗静电保护的应用场景。在布局时注意靠近受保护端、保证良好接地及评估结电容对高速信号的影响,即可获得稳定可靠的保护效果。若需采购、样片或详细封装 land pattern 与应用手册,可联系 CJ(长电/长晶)或授权分销商获取完整技术资料。

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