WMSIC Electronic Components

Brightking SA45A/B SA45A

ModelSA45A/B
PackageDO-15
BrandBrightking
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
Brightking SA45A / B
Type
BRIGHTKING
Minimum package
2000 盒

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
SA45A/B
Electronic Component
1
Package
DO-15
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.445g
Electronic Component
1
Electronic Component
BM0265147416
Operating Temperature
55℃~+150℃
Voltage
72.7V
Current(Ir)
1uA
Voltage(VBR)
50V
Electronic Component
Electronic Component

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

Brightking SA45A/B 瞬态抑制二极管(TVS)产品概述

一、产品定位与核心身份

Brightking(台湾君耀)SA45A/B是一款单向瞬态抑制二极管(TVS),属于君耀TVS系列的经典防护器件,核心作用是为电子电路提供瞬态过压防护——当遭遇雷击、静电放电(ESD)、电源浪涌等突发过压干扰时,快速导通并钳位电压,避免后级敏感元器件(如MCU、传感器、IC)因过压损坏。型号中“SA”为君耀TVS系列标识,“45”对应反向截止电压45V,“A/B”为封装或参数细分版本(如不同封装尺寸、批次规格),可根据电路需求灵活适配。

二、关键电气参数解析

SA45A/B的参数设计精准匹配多场景防护需求,核心参数的技术逻辑清晰:

  1. 极性与截止特性
    采用单向导通设计,正常工作时反向截止(反向截止电压(V_{rwm}=45V)),确保电路在额定电压下稳定运行;当反向电压超过截止值时,器件快速进入导通状态,实现过压隔离。
  2. 击穿与钳位能力
    击穿电压((V_{br}))为50V(典型值),是器件从截止到导通的过渡点;过压时可将电压钳位至72.7V(典型值)——该值远低于多数敏感元器件的耐压极限(通常≥80V),有效保护后级电路。
  3. 脉冲耐受能力
    支持峰值脉冲电流((I_{pp}))7A、峰值脉冲功率((P_{pp}))500W@10/1000μs:其中“10/1000μs”为国际标准浪涌波形(上升沿10μs,半峰值持续1000μs),表明器件可承受该波形下500W的脉冲冲击,适配大多数工业级浪涌场景。
  4. 漏电流与温度范围
    反向漏电流((I_r))仅1μA(典型值),正常工作时漏电流极小,不影响电路功耗;工作温度范围宽达-55℃~+150℃,可适应极端环境(如汽车发动机舱、户外工业设备)的温度变化。

三、封装与可靠性特性

SA45A/B采用插件封装(常见为DO-15或DO-201形式),具备以下优势:

  1. 工艺适配性
    插件封装便于手工焊接、批量插件生产,适配传统电路板设计;相比贴片封装,其引脚接触面积大,耐脉冲冲击能力更强,适合高功率浪涌场景。
  2. 高可靠性
    君耀作为专业半导体厂商,SA45A/B通过严格可靠性测试(温度循环、湿热老化、脉冲寿命测试),符合RoHS环保标准,可长期稳定工作于恶劣环境。
  3. 安装便捷性
    插件引脚设计简单,无需特殊焊接工具,降低电路设计与生产的复杂度。

四、典型应用场景

SA45A/B的参数特性使其适配多领域防护需求:

  1. 工业控制:PLC输入输出接口、传感器模块、电机驱动电路的浪涌保护,抵御雷击或电源波动干扰。
  2. 汽车电子:车载传感器(胎压监测、氧传感器)、车灯控制电路、车载通信接口的过压防护,适配汽车级宽温环境。
  3. 通信设备:路由器、交换机、光模块的电源/信号端口防护,隔离雷电浪涌与静电放电。
  4. 消费电子:充电器、机顶盒、智能家居设备的电源接口防护,提升产品抗干扰能力。
  5. 医疗设备:监护仪、输液泵的信号端口防护(需结合医疗级认证要求),确保设备稳定运行。

五、选型与应用注意事项

为确保防护效果,需注意以下要点:

  1. 电压匹配:后级电路正常工作电压需低于(V_{rwm})(45V),避免器件常态导通;若后级电压更高,需选择更高截止电压的TVS型号。
  2. 脉冲功率匹配:若系统最大浪涌功率超过500W,可采用多只SA45A/B并联(需注意均流)或选更高功率型号。
  3. 极性确认:单向TVS需严格核对正负极性(封装上有标识),接反会导致器件失效。
  4. 封装适配:若采用贴片工艺,需选择君耀同系列贴片型号(如SA45CA),避免封装不兼容。

总结:Brightking SA45A/B凭借宽温范围、高脉冲耐受能力与插件封装优势,成为工业、汽车、通信等领域过压防护的可靠选择,可有效提升电子系统的抗干扰能力与使用寿命。

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