WMSIC Electronic Components

Brightking SJD12A48L01

ModelSJD12A48L01
PackageSOD-123S
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 SJD12A48L01
Type
BRIGHTKING
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
SJD12A48L01
Electronic Component
1
Package
SOD-123S
Electronic Component
Electronic Component
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.038g
Electronic Component
1
Channel Count
Electronic Component
Electronic Component
BM0264590712
Operating Temperature
55℃~+150℃
Voltage
77.4V
Electronic Component
IEC 61000-4-2
Current(Ir)
1uA

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

Brightking SJD12A48L01 ESD防护二极管产品概述

SJD12A48L01是台湾君耀(Brightking)推出的单向ESD防护二极管,专为敏感电子电路的静电放电(ESD)防护设计,符合IEC 61000-4-2国际防护标准,具备宽温适应性、低漏电流、小封装等特点,可广泛应用于消费电子、工业控制、汽车电子等领域。

一、产品定位与核心功能

作为单向ESD防护器件,SJD12A48L01的核心作用是在静电放电瞬间快速导通,将过电压钳位至安全范围,保护后端敏感元器件(如MCU、传感器、通信接口等)免受ESD冲击损坏。其设计遵循IEC 61000-4-2标准,可有效应对人体直接放电(HBM)、机器放电(MM)等常见ESD场景,避免电路因静电击穿、软失效导致的性能下降或损坏。

二、关键参数深度解析

1. 电压参数:精准防护的核心

  • 反向截止电压(Vrwm):48V——器件正常工作时(无ESD脉冲),反向偏置下不导通的最大电压,确保不干扰电路正常信号传输;
  • 击穿电压(Vbr):53.3V——反向偏置下开始导通的电压,是器件触发防护的起始点,比Vrwm高5.3V,避免误触发;
  • 钳位电压(Vc):77.4V——当遭遇峰值脉冲电流时,器件两端的最大电压限制值,直接决定对后端器件的防护效果(低钳位电压可减少过压对敏感元件的损伤)。

2. 电流与功率:脉冲耐受能力

  • 峰值脉冲电流(Ipp):2.6A——器件可承受的最大瞬态脉冲电流,反映抗大电流冲击能力;
  • 峰值脉冲功率(Ppp):1kW@8/20μs——8/20μs波形(IEC标准脉冲波形)下的最大耐受功率,是评估器件防护能力的关键指标;
  • 反向漏电流(Ir):1μA(典型值)——正常工作时的反向漏电流,极低漏电流可避免对电路功耗和信号完整性的影响,适合低功耗电路设计。

3. 其他关键参数

  • 通道数:单路——适合单端信号的ESD防护,如USB、音频接口等;
  • 工作温度范围:-55℃~+150℃——宽温设计,可适应工业级、汽车级等极端环境(如车载高温、户外低温场景)。

三、封装与可靠性设计

SJD12A48L01采用SOD-123表面贴装封装,具有以下优势:

  • 小型化:尺寸紧凑(约2.3mm×1.2mm),可节省PCB布局空间,适合智能手机、智能穿戴等高密度电路设计;
  • 焊接兼容性:支持回流焊、波峰焊等常规SMT工艺,适配自动化生产,提高生产效率;
  • 可靠性:封装结构稳定,配合宽温工作范围,可确保长期在恶劣环境下稳定运行,MTBF(平均无故障时间)符合工业级器件要求。

四、典型应用场景

SJD12A48L01的参数特性使其适用于多领域的ESD防护:

  1. 消费电子:手机、平板、笔记本电脑的USB接口、音频接口、显示屏接口防护;
  2. 工业控制:PLC、传感器、工业通信端口(如RS485、CAN总线)的ESD防护;
  3. 汽车电子:车载信息娱乐系统、传感器(如胎压监测、摄像头)的接口防护(宽温适配车载-40℃~+85℃环境);
  4. 通信设备:路由器、交换机、基站的以太网端口、射频接口防护。

五、产品优势总结

  1. 高效防护:低钳位电压(77.4V)快速限制过压,保护敏感元件免受ESD损伤;
  2. 宽温可靠:-55℃~+150℃宽温范围,适应极端环境,满足工业/汽车级应用需求;
  3. 低功耗干扰:1μA低漏电流,不影响电路正常工作,适合低功耗设计;
  4. 小封装适配:SOD-123封装,适合高密度PCB布局,节省空间;
  5. 标准兼容:符合IEC 61000-4-2,兼容性强,可与主流电子系统集成。

六、使用注意事项

  1. 极性识别:单向器件需注意极性(通常封装上有"~"或圆点标记),反接会导致防护失效;
  2. 布局要求:尽量靠近被防护端口安装,减少引线长度(引线电感会降低钳位效果);
  3. 焊接规范:焊接温度需符合SOD-123封装要求(如回流焊峰值温度≤260℃,时间≤10s),避免热损伤;
  4. 脉冲限制:避免超过最大脉冲功率(1kW@8/20μs),防止器件永久性损坏。

SJD12A48L01凭借其可靠的防护性能、宽温适应性和小封装设计,成为电子设备ESD防护的高性价比选择,可有效提升产品的静电可靠性。

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