WMSIC Electronic Components

MCC SMCJ58A-TP SMCJ58A

ModelSMCJ58A-TP
PackageSMC(DO-214AB)
BrandMCC
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 24+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
MCC SMCJ58A-TP
Type
MCC
Unit
Electronic Component
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
MCC
Electronic Component
SMCJ58A-TP
Electronic Component
1
Package
SMC(DO-214AB)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.375g
Electronic Component
1
Electronic Component
BM0227091899
Operating Temperature
55℃~+175℃
Voltage
93.6V
Current(Ir)
5uA
Voltage(VBR)
71.2V

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

SMCJ58A-TP 产品概述

一、产品简介

SMCJ58A-TP 是 Micro Commercial Co.(MCC,美微科)出品的一款表面贴装瞬态电压抑制二极管(TVS)。该器件属于 SMCJ 系列,采用 DO-214AB(SMC)封装,提供卷带(TR)包装,器件处于有源状态,面向通用瞬态抑制应用。器件为单向通道设计,适用于对直流或单向脉冲过电压事件的保护。

二、主要电气参数

  • 典型反向工作电压(Vrwm):58 V
  • 击穿电压(Vbr,最小值):64.4 V
  • 箝位电压(Vc,最大值):93.6 V(在器件规定的峰值脉冲条件下)
  • 峰值脉冲电流(Ipp,10/1000 µs):16.1 A
  • 峰值脉冲功率(Ppp):1500 W(1.5 kW,单次脉冲,10/1000 µs)
  • 单向通道:1(单向 TVS)
  • 工作结温范围(TJ):-55 °C ~ 175 °C

这些参数表明 SMCJ58A-TP 适合用于需要在高达数十安脉冲条件下提供短时过电压钳位的场合,能在突发浪涌事件中限制电压并吸收能量,保护后端敏感电子器件。

三、封装与机械特性

  • 封装/外壳:DO-214AB(SMC),适用于自动贴片和波峰/回流焊接工艺
  • 安装类型:表面贴装(SMD)
  • 包装形式:卷带(TR),便于自动化产线贴装

SMC 大封装提供相对较好的热散能力与能量吸收能力,但在使用时仍需关注PCB导热、焊盘设计以及周边焊点的热释放路径。

四、典型应用场景

  • 工业电源总线保护(直流母线、24 V / 48 V 级别系统)
  • 通用电子设备的输入/输出端口过压保护
  • 电池供电系统与电源模块的瞬态抑制
  • 通信设备、控制器与驱动模块的浪涌防护
  • LED 驱动、电机驱动等含有脉冲性负载的应用场景

注:器件的 Vrwm 和箝位电压决定了适用的工作电压范围,选型时需保证器件的反向工作电压高于系统正常工作电压,并留有适当裕量。

五、选型要点与注意事项

  • 工作电压匹配:Vrwm(58 V)应高于系统最大持续电压;若系统工作电压接近或超过 Vrwm,应选用更高 Vrwm 等级。
  • 箝位电压关乎后端器件安全:在指定 Ipp 条件下 Vc 最大 93.6 V,需确认该电压不会损害被保护电路。
  • 能量吸收能力与脉冲波形:datasheet 中 Ppp、Ipp 基于 10/1000 µs 波形,若系统可能遇到其他波形(如 8/20 µs)需参考厂商曲线或试验数据。
  • 环境与热管理:长时间或重复的浪涌会导致器件升温,设计时要考虑热阻、PCB 散热和阵列保护策略。
  • 与保护链配合:TVS 常与熔断器、恒流器件协同工作以提升整体保护能力;单独使用时需确认能满足瞬态能量要求。

六、PCB 布局与焊接建议

  • 焊盘与走线:为降低串联电感并提高瞬态响应速度,TVS 两端应尽量以短、粗的走线连接到被保护节点和地。
  • 接地处理:若采用公共地,应保证接地回路低阻、宽铜区域,有条件可加地盲孔以改善散热与回流路径。
  • 熔断器配合:在高能量应用中建议在 TVS 前端配置合适的熔断或限流元件,防止反复浪涌导致 TVS 损坏。
  • 焊接工艺:遵循制造商的回流焊温度曲线与时序要求,避免超温导致封装或内部结构损伤。

七、可靠性与环境特性

SMCJ58A-TP 的工作结温范围宽(-55 °C 至 175 °C),适用于多种工业环境。实际使用时应参考 MCC 提供的完整数据手册和可靠性测试报告,包括热阻、浪涌循环寿命、ESD 性能等指标,以评估在特定应用中的长期可靠性。

结语:SMCJ58A-TP 是一款面向通用瞬态抑制的单向 TVS 器件,凭借 58 V 的反向工作电压、在规定脉冲下 93.6 V 的箝位电压上限及 1.5 kW 的峰值能量处理能力,适合用于需要较高能量吸收能力的直流或单向电源保护场合。选型和使用时应结合实际工作电压、可能出现的脉冲类型和系统热管理策略,参照厂商 datasheet 做最终确认。

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