WMSIC Electronic Components

Leiditech LM1K24CA

ModelLM1K24CA
PackageSMB(DO-214AA)
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 LM1K24CA
Type
LEIDITECH
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LEIDITECH
Electronic Component
LM1K24CA
Electronic Component
1
Package
SMB(DO-214AA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.15g
Electronic Component
1
Electronic Component
BM0227780479
Operating Temperature
55℃~+150℃
Voltage
35V
Current(Ir)
1uA
Voltage(VBR)
25V
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.

LM1K24CA 瞬态抑制二极管(TVS)产品概述

一、产品简介

LM1K24CA 是 Leiditech(雷卯电子)推出的一款高能量吸收能力的双向瞬态抑制二极管(TVS),用于保护线路和电子元器件免受雷击、电源浪涌、开关瞬变等瞬态过电压冲击。该器件以 SMB(DO-214AA)封装提供,适合工业级和车规级等对抗浪涌能力与可靠性有较高要求的应用场合。

二、主要电气参数

  • 类型:TVS,双向(Bidirectional)
  • 反向截止电压(Vrwm):24 V
  • 击穿电压(Vbr):25 V
  • 钳位电压(Vc):35 V(在标准 8/20 μs 脉冲条件下)
  • 峰值脉冲功率(Ppp):30 kW @ 8/20 μs
  • 峰值脉冲电流(Ipp):780 A @ 8/20 μs
  • 反向漏电流(Ir):1 μA
  • 工作温度范围:-55 ℃ ~ +150 ℃
  • 极性:双向(适用于交流或无明显极性保护的直流场合)

以上参数表明 LM1K24CA 能在标准 IEC/EN 以及行业常用的 8/20 μs 浪涌测试波形下承受高能量冲击,钳位电压在受护电路可接受范围内,有效限制瞬态过电压峰值。

三、封装与机械特性

  • 封装形式:SMB(DO-214AA)
  • 外形适中,便于手工与自动贴装
  • 双向器件在 PCB 上无需考虑极性方向(但仍建议按器件丝印方向统一放置)
  • SMB 封装具有较好的散热能力,便于在高能量冲击时将热量传导到 PCB

四、典型应用场景

  • 24 V 直流电源总线保护:工业自动化、楼宇控制、安防设备等
  • 通讯接口与传感器线缆浪涌防护:现场设备、远程终端单元(RTU)、网关等
  • 汽车电子次级保护(非车规强制认证场景下的车载辅助电路)
  • 配电箱、供电模块、逆变器输入端口的浪涌抑制
  • 任何需要双向浪涌保护的平台,尤其是可能出现正负方向瞬态的线路

五、使用建议与 PCB 布局要点

  • 靠近被保护端口放置:将 TVS 器件尽可能靠近需要保护的输入/连接器,以缩短引线和导线环路,降低感应电压。
  • 走线尽量短且宽:输入到 TVS 的走线应短而宽,以减少串联阻抗和寄生电感,提高吸收效率。
  • 热散布与铜箔:在 TVS 周围使用适量铜箔或散热铜迹,必要时加铺散热孔或通孔以提高散热与功率承载能力。
  • 配合限流元件:对于重复浪涌或可能出现持续过压的场合,建议与保险丝、PTC 或串联电阻配合使用,以限制能量并避免器件承受超额能量。
  • 焊接与处理:遵循 SMB 封装的焊接规范,避免长时间高温暴露以保护器件稳定性;存储与回流焊接参考厂商推荐工艺。

六、可靠性与环境适应性

LM1K24CA 的工作温度范围宽(-55 ℃ ~ +150 ℃),适合严苛环境使用。低漏电流(1 μA)在常温下可保证对被保护电路的影响最小,同时在高温或应力下仍能维持对瞬态的抑制能力。SMB 封装在机械振动与热循环下具有良好的可靠性表现,适合工业与户外设备的长期部署。

七、选型与替代参考

在选型时,请确认系统的额定工作电压与最大容许钳位电压,确保 Vrwm(24 V)与钳位(35 V)满足被保护电路的安全余量。对于需要更高或更低保护电平的系统,可参考行业通用的 SMB 封装 24 V 类 TVS 器件作为替代,但务必比对 Ppp、Ipp、Vc 与温度特性以确保兼容。

总结:LM1K24CA 是一款面向 24 V 级别系统的高能量、双向瞬态抑制方案,凭借 30 kW@8/20 μs 的脉冲吸收能力、780 A 峰值脉冲电流以及宽温工作范围,适合工业、通讯与电源端口等要求可靠浪涌保护的场合。购买与进一步使用时,建议参考 Leiditech 的详细数据手册以获取完整的电气曲线与封装尺寸信息。

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