WMSIC Electronic Components

LRC S-SM340A

ModelS-SM340A
PackageDO-214AC(SMA)
BrandLRC
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
LRC S-SM340A
Type
LRC
Minimum package
7500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LRC
Electronic Component
S-SM340A
Electronic Component
1
Package
DO-214AC(SMA)
Electronic Component
Schottky Diode
Electronic Component
0.11g
Electronic Component
1
Electronic Component
BM0264340430
Current
3A
Diode
1
Current(Ir)
500uA@40V
(Vf)
550mV@3A
Electronic Component
40℃~+150℃
Electronic Component
Electronic Component
Electronic Component
7500

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

S-SM340A 肖特基二极管产品概述

S-SM340A是乐山无线电(LRC)推出的汽车级肖特基整流二极管,采用DO-214AC(SMA)贴片封装,以40V反向耐压、3A持续整流电流为核心参数,兼具低正向压降、宽温适应性及强浪涌耐受能力,适用于汽车电子、低压电源等对可靠性要求较高的场景。

一、产品定位与核心属性

该器件属于中低压小功率肖特基二极管,聚焦汽车电子及通用低压整流需求:

  • 品牌:乐山无线电(LRC),国内半导体行业老牌厂商,具备汽车级器件研发生产能力;
  • 封装:DO-214AC(SMA),贴片式封装体积紧凑(尺寸约2.7×1.6×1.1mm),适配高密度PCB布局;
  • 核心规格:40V直流反向耐压、3A持续整流电流,满足多数12V/24V系统的整流需求。

二、关键电气参数详解

S-SM340A的电气参数针对汽车及低压场景优化,核心参数如下:

  1. 正向压降(Vf):550mV@3A(典型值)—— 低VF设计可降低导通损耗,提升电路效率,尤其适合长期工作的电源电路;
  2. 直流反向耐压(Vr):40V —— 满足汽车12V/24V系统的电压裕量(汽车系统最高工作电压约36V),避免反向击穿;
  3. 持续整流电流(If):3A —— 可稳定承载3A持续负载电流,适配车载传感器、小型电机驱动等小功率负载;
  4. 反向漏电流(Ir):500μA@40V(典型值)—— 反向漏电流小,减少待机功耗,提升电路可靠性;
  5. 工作结温范围:-40℃~+150℃ —— 覆盖汽车环境的极端温度(冬季低温、夏季发动机舱高温),确保宽温下性能稳定;
  6. 非重复峰值浪涌电流(Ifsm):80A —— 可耐受瞬态浪涌冲击(如汽车启动瞬间的大电流),避免器件损坏。

三、封装与可靠性设计

S-SM340A的封装及可靠性设计贴合汽车级要求:

  • 贴片封装优势:DO-214AC(SMA)为表面贴装,无引线设计减少寄生电感,适合高频应用;同时体积小,可节省PCB空间;
  • 汽车级可靠性:器件经过严格的温度循环、湿度测试,结温范围宽,浪涌耐受能力强,符合汽车电子对可靠性的严苛要求;
  • 热性能优化:封装散热路径合理,可有效导出工作时的热量,避免结温过高导致性能下降。

四、典型应用场景

该器件的参数特性使其在多领域具备实用性:

  1. 汽车电子:车载电源系统(如点烟器电源、电池管理)、传感器电路(如温度/压力传感器信号处理)、LED照明驱动(如车内氛围灯)、DC-DC转换模块;
  2. 消费电子:小型开关电源(如手机充电器、充电宝)、电池保护电路;
  3. 工业控制:低压直流电源、小型电机驱动、PLC输入输出模块。

五、品牌与质量背书

乐山无线电(LRC)作为国内半导体行业的资深厂商,拥有超过50年的器件研发生产经验,其汽车级器件通过IATF16949质量管理体系认证,S-SM340A的参数一致性好、批量稳定性高,适合量产应用,可降低客户的选型及验证成本。

总结而言,S-SM340A以汽车级可靠性、低损耗、宽温适应为核心优势,是汽车电子及低压整流场景的高性价比选择。

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