WMSIC Electronic Components

TWGMC SMAJ6.5CA Bidirectional TVS Diode SMAJ6.5CA

ModelSMAJ6.5CA
PackageSMA(DO-214AC)
BrandTWGMC
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
TWGMC SMAJ6.5CA
Type
TWGMC
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TWGMC
Electronic Component
SMAJ6.5CA
Electronic Component
1
Package
SMA(DO-214AC)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.098g
Electronic Component
1
Electronic Component
BM0227688381
Operating Temperature
65℃~+150℃
Voltage
11.2V
Electronic Component
IEC 61000-4-2
Current(Ir)
500uA
Voltage(VBR)
7.98V

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

SMAJ6.5CA 产品概述

一、产品简介

SMAJ6.5CA 是 TWGMC(台湾迪嘉)推出的一款双向瞬态电压抑制器(TVS),封装为 SMA(DO-214AC)。该器件专为对抗静电放电(ESD)和雷击/浪涌等瞬态过电压事件而设计,适用于电源轨和信号线的过压保护,能够在短时间内吸收高能量脉冲,保护下游元器件免受损坏。

二、主要电气参数

  • 钳位电压(VCL):11.2 V(典型,依据脉冲测试条件)
  • 工作温度:-65 ℃ ~ +150 ℃
  • 击穿电压(VBR):7.98 V(标称)
  • 反向截止电压 Vrwm:6.5 V(稳压工作电压)
  • 峰值脉冲功率 Ppp:400 W(10/1000 μs波形)
  • 峰值脉冲电流 Ipp:35.7 A(10/1000 μs波形)
  • 反向电流 Ir:500 μA(在 Vrwm 条件下典型)
  • 极性:双向(适合交替极性或无固定极性的线路)
  • 防护等级:满足 IEC 61000-4-2 静电放电防护要求

三、关键特点

  • 双向结构:无需区分极性,适合交流信号或双向数据线保护。
  • 高脉冲能量吸收:在 10/1000 μs 波形下 400 W 的吸收能力,可处理较长持续时间的浪涌。
  • 低漏电流:Vrwm 下反向电流典型 500 μA,适合对待机功耗有一定要求的系统。
  • 宽工作温度范围:-65 ℃ 至 +150 ℃,适用于工业级及更苛刻环境。
  • 标准 SMA 封装(DO-214AC):便于自动化贴装与散热、可靠性良好。

四、典型应用场景

  • 5 V/6 V 电源轨过压保护(Vrwm=6.5 V,适合保护 5 V 系统或接近电源线路)
  • 串行接口与数据线(如 RS-485、CAN 等双向通信总线)
  • 电源输入端、防雷/浪涌保护模块(SPD)
  • 工业控制、通信基站、汽车电子(在温度和瞬态能力允许范围内)
  • 消费类电子产品中需要 ESD 抗扰的接口保护

五、使用与选型建议

  • 确认工作电压:Vrwm(6.5 V)应高于电路最大正常工作电压,避免在正常状态下频繁触发。
  • 考虑极性需求:若保护对象为单向电源线,可选择单向 TVS 获取更低的钳位电压;若为双向或交流信号,SMAJ6.5CA 的双向结构更合适。
  • 脉冲能量匹配:400 W/10/1000 μs 能量能力和 35.7 A 峰值电流应满足预期浪涌工况;若遇到更强雷击或常见冲击,需考虑更高功率器件或并联方案(注意电流分配与散热)。
  • 漏电与信号完整性:若用于高速信号线,关注 TVS 的结电容;本器件以电源/浪涌保护为主,高频性能需按具体参数评估。

六、封装与可靠性

  • 封装:SMA(DO-214AC),适合回流焊与波峰焊,机械强度高,散热路径良好。
  • 温度与可靠性:-65 ℃ 至 +150 ℃ 的工作范围适用于大多数工业与苛刻环境,应注意在高温/高能量脉冲下评估器件热应力与寿命。

七、典型接线与设计注意事项

  • PCB 布局:TVS 与被保护节点尽量靠近放置,采用粗短走线以降低寄生电感。
  • 接地处理:为获得最佳保护效果,接地回路要短且低阻抗;对高能量浪涌场合建议使用足够截面的接地回路。
  • 热管理:在可能频繁遭受浪涌的环境中,注意器件周边散热设计与评估累积热量。
  • 评估测试:在设计时建议按 IEC 61000-4-2、IEC 61000-4-5 等标准做实际浪涌/ESD 验证。

八、备货与采购信息

  • 品牌:TWGMC(台湾迪嘉)
  • 型号:SMAJ6.5CA,封装 SMA(DO-214AC)
  • 采购时请确认规格表(datasheet)中 Vrwm、Vbr、Vcl、Ipp、Ppp 的测试条件与典型值是否满足您的应用场景;并与供应商确认 RoHS、批次与可追溯性信息。

如需更详细的参数曲线(V-I 特性、钳位随电流变化曲线、结电容、测试条件)或样片测试建议,可提供电路工作条件,我可以协助选择或给出匹配的测试方案。

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