WMSIC Electronic Components

Jingdao Microelectronics SMF24A

ModelSMF24A
PackageSOD-123F
BrandElectronic
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
Electronic SMF24A
Type
Jingdao Microelectronics
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
SMF24A
Electronic Component
1
Package
SOD-123F
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.032g
Electronic Component
1
Electronic Component
BM0228055893
Operating Temperature
55℃~+150℃
Voltage
38.9V
Current(Ir)
1uA
Voltage(VBR)
29.5V
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.

SMF24A(24V)TVS 二极管 产品概述

一、产品简介

SMF24A 是晶导微电子推出的一款单向 TVS(二极管瞬态抑制器),封装为 SOD-123F,专为 24V 直流系统的瞬态过压保护而设计。该器件在 10/1000μs 浪涌波形条件下可承受高达 200W 的峰值脉冲功率,适合工业电源、通信设备及车载辅助电路等对抗浪涌和瞬态电压冲击的场合。

二、关键电气参数

  • 反向截止电压 Vrwm:24V,适配 24V 工况的持续耐压要求。
  • 击穿电压(典型值):29.5V,表示器件转入导通状态时的电压阈值。
  • 钳位电压(典型值):38.9V,在浪涌电流作用下对被保护节点的钳位水平。
  • 峰值脉冲功率 Ppp:200W(10/1000μs),用于评估单次浪涌能量吸收能力。
  • 峰值脉冲电流 Ipp:5.1A(10/1000μs),对应于上表功率和钳位条件下的允许脉冲电流。
  • 反向电流 Ir:1μA(在 Vrwm 条件下),表示静态漏电小,有利于节能与稳定。
  • 工作温度范围:-55℃ 至 +150℃,可满足宽温环境和高温工艺的应用需求。
  • 极性:单向,适用于 DC 极性明确的系统。

三、主要特点与优势

  • 针对 24V 系统优化:24V 反向耐压与约 29.5V 的击穿保证在正常工作下不导通,而在浪涌时快速夹紧到约 38.9V,保护下游器件。
  • 大功率瞬态吸收能力:200W@10/1000μs 能处理常见的工业浪涌事件,配合系统熔断或限流元件可提高整体抗毁能力。
  • 低漏电与宽温度:1μA 的低反向电流与 -55~+150℃ 的工作温度,适合对漏电敏感和环境苛刻的场景。
  • 小型封装:SOD-123F 占板面积小,便于在空间受限的 PCB 布局中就近保护关键节点。

四、典型应用场景

  • 24V 工业控制电源与保护模块。
  • 通信基站与交换设备的电源轨防护。
  • 车载电子(24V 辅助电源)、农业与工程机械的电子模块(需注意符合车辆相关规范时的额外要求)。
  • 直流供电的接口与信号线防浪涌保护(在需要时与滤波、限流电路配合)。

五、选型与使用建议

  • 若系统常见浪涌能量或电流高于器件额定值,应考虑并联多个或选用额定更高的 TVS,并配合限流器件(熔断器、电感等)。
  • 将 SMF24A 靠近被保护元件或输入端布局,以缩短线路感性引起的过压。
  • 关注焊接与回流工艺参数,遵循厂商推荐的温度曲线与焊接注意事项,避免超过封装和内部结构的热应力限制。
  • 在对浪涌响应时间、频繁脉冲或长期承受高能量的应用中,进行可靠性评估与寿命验证。

六、结论

SMF24A(晶导微电子,SOD-123F)是一款面向 24V 直流系统的高能瞬态抑制器,具有 200W 的脉冲吸收能力、低漏电与宽温适应性,适用于工业、通信及部分车载辅助电源场景。合理的 PCB 布局与配套限流措施可充分发挥其保护效果,提升系统对电压瞬变的鲁棒性。若需进一步的典型曲线、封装尺寸或可靠性数据,建议参考厂方完整数据手册或联系厂家技术支持。

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