WMSIC Electronic Components

HXY MOSFET SMF18CA

ModelSMF18CA
PackageSOD-123FL
BrandHXY MOSFET
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
HXY MOSFET SMF18CA
Type
HXY MOSFET
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HXY MOSFET
Electronic Component
SMF18CA
Electronic Component
1
Package
SOD-123FL
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.044g
Electronic Component
1
Electronic Component
BM0257710729
Voltage
29.2V
Current(Ir)
1uA
Voltage(VBR)
20V;22.1V
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.

SMF18CA 产品概述

一、产品简介

SMF18CA 是华轩阳电子(HXY MOSFET)推出的一款双向瞬态电压抑制二极管(TVS),用于抑制瞬态过电压和浪涌电流,保护敏感电子元件免受雷击、电源瞬变和开关感性负载反向峰值影响。器件采用 SOD-123FL 小型封装,适合表面贴装应用,兼顾体积与功率处理能力。

二、主要特性

  • 极性:双向(Bi‑directional),可对正负向瞬变均提供保护。
  • 反向截止电压(Vrwm):18V,适用于以18V为工作电压或接近该区间的电源线上。
  • 击穿/工作区间:击穿电压约 20V 至 22.1V,确保在超过工作电压时可靠进入导通状态。
  • 钳位电压(Vclamp):29.2V(在指定脉冲条件下),限制被保护节点的峰值电压。
  • 峰值脉冲电流(Ipp):6.8A;峰值脉冲功率(Ppp):200W,具备良好的浪涌吸收能力。
  • 反向漏电流(Ir):≤1 μA,静态泄漏小,不影响正常工作电路。

三、电气参数概览

器件在规定脉冲测试条件下能够承受高达 200W 的脉冲能量并在 6.8A 峰值电流时将过电压钳制在约 29.2V。击穿电压分布在 20V 到 22.1V 范围,保证触发一致性。低漏电流有利于在待机或高阻抗电路中保持低损耗。

四、典型应用场景

  • 工业控制与电源模块的输入浪涌保护;
  • 通信设备与接口(如以太网、串口等)对瞬态干扰的抑制;
  • 汽车电子系统中对瞬态电压(适用于非高压总线)保护;
  • 消费类电器、备电系统、充电设备等需要对突发脉冲进行吸收的场合。

五、封装与安装注意

SMF18CA 采用 SOD-123FL 表面贴装封装,适合自动回流焊工艺。布局时建议将 TVS 靠近被保护的输入/接口引脚放置,走线尽可能短且宽以降低串联电感与提高热散;焊盘应符合制造商推荐尺寸并保证良好接地回流路径以利于热量与冲击电流分散。

六、热与可靠性提示

在高能量脉冲条件下器件会产生热量,长时间反复承受接近额定 Ppp 的脉冲会影响寿命。设计时应留有安全裕度,必要时可并联或选用更高功率等级的 TVS。环境温度、焊接工艺和散热条件均会影响器件性能与可靠性。

七、选型与采购建议

选型时确认系统最大工作电压与可能出现的瞬态幅度,SMF18CA 适用于以 18V 左右工况的保护需求。订购时请按完整型号及封装(SOD-123FL)下单,并向华轩阳电子核实最新规格书与批次一致性,以保证钳位电压、击穿范围与脉冲能力满足系统要求。

如需更详细的典型波形、脉冲测试条件或封装尺寸图,请提供联系方式或直接索取器件规格书(datasheet)。

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