WMSIC Electronic Components

TECH PUBLIC SMBJ15CA

ModelSMBJ15CA
PackageDO-214AA(SMB)
BrandTECH PUBLIC
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
TECH PUBLIC SMBJ15CA
Type
TECH PUBLIC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TECH PUBLIC
Electronic Component
SMBJ15CA
Electronic Component
1
Package
DO-214AA(SMB)
Electronic Component
Electronic Component
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.186g
Electronic Component
1
Electronic Component
BM0264777499
Operating Temperature
55℃~+150℃
Voltage
24.4V
Current(Ir)
1uA
Voltage(VBR)
18.5V
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.

SMBJ15CA — 双向瞬态电压抑制二极管(TVS)产品概述

SMBJ15CA 是 TECH PUBLIC(台舟电子)推出的一款高功率、双向瞬态电压抑制二极管,采用 DO-214AA(SMB)封装,专为移动终端与便携式电子设备的浪涌与瞬态过压保护设计。该器件在 10/1000 μs 脉冲下可承受高达 600 W 的峰值功率,并具有出色的钳位能力与快速响应特性,适合保护数据线、电源线与敏感芯片免受尖峰电压损害。

一、主要技术参数(概要)

  • 极性:双向(Bidirectional)
  • 额定反向持续工作电压 Vrwm:15 V
  • 击穿电压 VBR(测试电流条件下):18.5 V
  • 峰值钳位电压(Ipp):24.4 V(在 24.6 A,10/1000 μs 脉冲下)
  • 峰值脉冲电流 Ipp:24.6 A(10/1000 μs)
  • 峰值脉冲功率 Ppp:600 W(10/1000 μs)
  • 反向漏电流 Ir:1 μA(常温下典型)
  • 工作温度范围:-55 ℃ ~ +150 ℃
  • 环保特性:无卤,符合 RoHS 标准
  • 封装:DO-214AA(SMB)
  • 品牌:TECH PUBLIC(台舟电子)

二、关键特性与优势

  • 高峰值功率承受能力:在标准 10/1000 μs 浪涌条件下可达到 600 W,能够有效吸收电源和信号线上的大能量瞬态脉冲,保护下游电路元件。
  • 出色钳位性能:典型钳位电压 24.4 V(对应 24.6 A 脉冲),低钳位电压可减少受保护器件所承受的过压应力。
  • 低增量浪涌电阻:在浪涌事件中保持较低的动态电阻,有助于降低钳位电压上升,提升保护效果。
  • 快速响应:TVS 器件响应时间极短,能够在纳秒级对瞬态抑制,实现对 ESD、浪涌和其它过压瞬变的即时保护。
  • 低泄漏电流:典型反向漏电流仅 1 μA,有利于在待机及低功耗应用中维持较低的静态功耗。
  • 环保与可制造性:无卤材料,符合 RoHS,适合消费电子量产装配工艺。

三、典型应用场景

  • 移动设备与配件:智能手机、平板、移动电源、无线耳机充电接口等的电源线与数据线保护。
  • 便携式数码设备:个人数字助理(PDA)、便携式媒体播放器等对体积、成本和可靠性均有严格要求的产品。
  • 通信接口保护:USB/串口/音频线缆等双向信号路径的瞬态抑制。
  • 工控与汽车电子(非安全关键路径):在符合工作温度与环境要求情况下,用于抑制瞬态过压。

四、典型应用与设计建议

  • 配置方式:双向 TVS 可直接并联在需保护的线路两端,适用于交流或双向信号线;对单向电源线,请优先选择单向型 TVS。
  • 与熔断器/抑制电阻配合:为提高系统在极端浪涌下的可靠性,建议与适当额定值的熔断器或限流电阻联合使用,以分担和限制通过 TVS 的峰值能量。
  • PCB 布局要点:尽量缩短 TVS 到被保护器件之间的走线;使用粗短的轨迹和尽可能大的焊盘以降低寄生电阻和热阻。
  • 热管理与能量散布:连续或重复高能量浪涌可能导致封装温升,应确保周围的 PCB 有足够的铜箔散热并满足流片或系统级的热极限。
  • 测试条件匹配:给出的钳位与功率参数基于 10/1000 μs 波形测试,系统级保护评估建议采用相同或更苛刻的浪涌规范进行验证。

五、封装、可靠性与焊接

  • 封装形式:DO-214AA(SMB),适合自动贴装(SMT)与回流焊工艺。
  • 焊接注意:遵循 IC 封装的回流温度曲线,避免超温和多次重复回流以降低热应力导致的性能退化。存储与操作避免潮湿环境,必要时采用防潮包装。
  • 温度适应性:器件支持宽工作温度范围(-55 ℃ ~ +150 ℃),可满足一般消费电子和部分工业应用的环境要求。

六、选型与替代建议

  • 若系统为单向电源保护(例如 +V 线),请考虑单向型 TVS 获得更低钳位与更高效率的保护方案。
  • 在需要更高能量吸收能力或更低钳位电压的场合,可衡量并选择更大封装或额定功率更高的型号;在空间受限的场合,比较 SMB 与 SOD-123/SMB 等封装的尺寸与额定功率。

SMBJ15CA 提供了在便携、移动应用中兼顾能量吸收能力与封装尺寸的平衡,适用于保护对体积和成本敏感但对瞬态抑制要求较高的电源与信号线。采购或设计导入时,请参考 TECH PUBLIC 的完整数据手册以获取详细的电气测试条件、曲线图和封装尺寸,以便在系统级完成可靠性与电磁兼容性验证。

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