WMSIC Electronic Components

Leiditech SMAJ15CA

ModelSMAJ15CA
PackageDO-214AC(SMA)
BrandLeiditech
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
Leiditech SMAJ15CA
Type
LEIDITECH
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LEIDITECH
Electronic Component
SMAJ15CA
Electronic Component
1
Package
DO-214AC(SMA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.081g
Electronic Component
1
Electronic Component
BM0264463882
Voltage
24.4V
Current(Ir)
1uA
Voltage(VBR)
16.7V
Electronic Component
Electronic Component
Electronic Component
5000

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

Leiditech SMAJ15CA 双向瞬态抑制二极管(TVS)产品概述

一、产品定位与核心类别

SMAJ15CA是雷卯电子(Leiditech)推出的双向瞬态抑制二极管(TVS),专为低压电路的过压浪涌保护设计。TVS作为主流过压防护器件,通过ns级快速导通将瞬态过电压钳位在安全范围,避免后端敏感元件(如IC、传感器)被浪涌击穿。该器件核心定位是15V工作电压等级的小体积双向保护,适配多种低压电子系统的浪涌防护需求。

二、核心电气参数及应用意义

关键参数直接决定防护能力与适用场景,各参数解读如下:

  1. 极性:双向
    正反方向均可导通保护,无需区分正负极,简化电路设计(尤其适合差分信号接口,如RS485、USB)。
  2. 反向截止电压(Vrwm):15V
    电路正常工作时,TVS反向偏置且漏电流极小,不影响系统功耗与信号传输。建议电路工作电压低于15V(如12V、15V电源),避免误触发。
  3. 击穿电压(Vbrmin):16.7V
    当电压超过16.7V(最低击穿阈值)时,TVS快速导通启动防护,响应时间达ns级(TVS典型特性)。
  4. 钳位电压(Vc):24.4V
    导通后将电压限制在24.4V以内,匹配多数低压IC的安全耐压(多数低压IC最大耐压≤25V),确保敏感元件不受损。
  5. 峰值脉冲电流(Ipp):16.4A & 峰值脉冲功率(Ppp):400W
    以10/1000μs(前沿10μs、半值1000μs)标准浪涌波形测试,可承受16.4A脉冲电流,覆盖电源插拔、雷击感应等常见浪涌场景。
  6. 反向漏电流(Ir):1μA
    15V偏置下漏电流仅1μA,远低于系统待机功耗要求,无额外耗电。

三、封装与物理特性

SMAJ15CA采用SMA封装(DO-214AC),尺寸约2.7mm×1.8mm×1.1mm,具备以下优势:

  • 表面贴装工艺,适配自动化生产线,降低生产难度;
  • 体积紧凑,适合便携设备(如蓝牙耳机、智能手环)、小型通信模块(路由器、交换机)等空间受限场景;
  • 封装散热满足400W脉冲功率需求,可应对短时间浪涌冲击。

四、典型应用场景

结合参数与封装特点,该器件广泛应用于:

  1. 低压电源防护:12V/15V电源系统(机顶盒、智能家居控制器、工业传感器电源),防止电源浪涌损坏后端电路;
  2. 通信接口防护:RS485、RS232、USB2.0/3.0、以太网接口,双向保护差分信号免受浪涌干扰;
  3. 消费电子防护:手机充电口、平板电脑接口、智能穿戴设备,应对静电放电(ESD)与浪涌;
  4. 工业控制防护:PLC输入输出端口、现场总线接口,抵御工业现场电磁干扰与浪涌。

五、品牌与可靠性保障

雷卯电子作为国内过压保护领域厂商,SMAJ15CA具备:

  • 符合IEC 61000-4-5浪涌标准,可通过1kV/2kV浪涌等级测试;
  • 无铅环保封装,满足RoHS指令,适配出口产品;
  • 经过高温老化、湿度循环测试,确保长期稳定性;
  • 批量一致性好,适合规模化生产。

总结

SMAJ15CA是一款兼顾防护性能与应用灵活性的TVS器件,双向极性简化设计、低漏电流无功耗影响、SMA封装适配空间受限场景,是低压电子系统浪涌防护的成熟选择。

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