WMSIC Electronic Components

RUILON SMDJ75A

ModelSMDJ75A
PackageDO-214AB(SMC)
BrandRUILON
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RUILON SMDJ75A
Type
RUILON
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
SMDJ75A
Electronic Component
1
Package
DO-214AB(SMC)
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.376g
Electronic Component
1
Electronic Component
BM0241251717
Operating Temperature
55℃~+150℃
Voltage
121V
Current(Ir)
2uA
Voltage(VBR)
92.1V
Electronic Component
Electronic Component
Electronic Component
3000

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

SMDJ75A 产品概述(RUILON 瑞隆源)

一、产品简介

SMDJ75A 是 RUILON(瑞隆源)推出的一款高能脉冲瞬态电压抑制器(TVS),封装为 DO-214AB(SMC),针对工业、通信与汽车电子等需要对直流电源或信号线进行浪涌保护的场合设计。该器件能承受 10/1000μs 浪涌波形下的高能量冲击,性能稳定、响应迅速。

二、主要技术参数

  • 类型:瞬态电压抑制器(TVS,单向)
  • 反向截止电压 Vrwm:75 V
  • 击穿电压 Vbr:92.1 V
  • 钳位电压 Vc(典型):121 V(在 Ipp 条件下)
  • 峰值脉冲电流 Ipp:24.79 A @ 10/1000 μs
  • 峰值脉冲功率 Ppp:3000 W @ 10/1000 μs
  • 反向电流 Ir:2 μA(在 Vrwm 条件下)
  • 工作温度范围:-55 ℃ ~ +150 ℃
  • 封装:DO-214AB(SMC)表面贴装

三、关键特性

  • 高能量吸收能力:在 10/1000μs 浪涌波形下可吸收 3kW 峰值功率,适合雷击或开关产生的长脉冲能量吸收。
  • 低泄漏、快速响应:反向泄漏仅 2 μA,降低静态功耗;PN 结快速雪崩响应,有效钳制瞬态过电压。
  • 宽温度范围:适用于严苛环境,可在高达 150 ℃ 的结温下工作。
  • 封装便于焊接:DO-214AB(SMC)适合自动贴装与回流焊工艺,热阻和焊盘散热良好。

四、典型应用

  • 工业电源与逆变器的输入侧浪涌保护
  • 通信设备(基站、电信机柜)电源和接口保护
  • 汽车电子 12V/24V 总线的浪涌抑制(需确认是否符合汽车级认证)
  • 开关电源、UPS、电表与仪表等设备的过压保护

五、选型与注意事项

  • Vrwm 匹配:选择 Vrwm 略高于被保护回路的正常工作电压(例如 75 V 适用于 48V 级至更高电压系统的上级保护),避免在正常工作状态下长期触发。
  • 钳位与能量:钳位电压 121 V 是在 Ipp 条件下的典型值,需确认被保护器件能承受该钳位电压。若被保护器件耐压不足,应选用更低钳位或多级保护方案。
  • 布局建议:将 TVS 放置于受保护点与输入电源或连接器尽量靠近的位置,走线短且粗,减小寄生电感以获得最佳钳位效果。
  • 并联限制:尽量避免直接并联多个 TVS 来提高能量吸收,若必须并联需保证电流分配均匀并配合限流元件。
  • 环境与热管理:长期高能脉冲会升高结温,应考虑良好散热通路与器件余量设计。

六、封装与焊接工艺

DO-214AB(SMC)为常见的高功率表贴封装,适合回流焊贴装。焊盘设计应参考厂商推荐,保证焊点完全热沉接触以利散热。回流焊温度曲线应遵循无铅或有铅工艺规范,避免超温或过长高温滞留影响可靠性。

七、可靠性与储存

SMDJ75A 设计用于多次承受工业级浪涌,但在遭受接近或超过额定 Ipp 的浪涌后建议进行功能验证或更换。储存时应防潮、防静电,避免机械应力。安装、测试与维修阶段应遵守常规 ESD 防护措施。

总结:SMDJ75A(RUILON)是一款适合中高电压电源和接口的高能 TVS 器件,具有良好的浪涌吸收能力、宽温范围及表贴封装优势。选型时应关注 Vrwm 与被保护系统电压的匹配、钳位电压对下游器件的影响以及布局和散热设计。若需更详细的电气特性曲线或封装尺寸,请参考厂商数据手册或联系供应商获取原始资料。

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