WMSIC Electronic Components

Prisemi PTVSLC3D24VB

ModelPTVSLC3D24VB
PackageSOD-323
BrandPRISEMI
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
Prisemi PTVSLC3D24VB
Type
PRISEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
PRISEMI
Electronic Component
PTVSLC3D24VB
Electronic Component
1
Package
SOD-323
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.03g
Electronic Component
1
Cj- Capacitor
1.5pF
Electronic Component
BM0256938792
Operating Temperature
55℃~+150℃
Voltage
48V;36V
Electronic Component
IEC 61000-4-4;IEC 61000-4-2
Current(Ir)
1uA

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

PTVSLC3D24VB 产品概述

一、产品简介

PTVSLC3D24VB 是由 Prisemi(芯导)推出的一款双向瞬态电压抑制器(TVS),采用 SOD-323 小型封装,面向需要抗浪涌、抗静电以及抗电快速瞬变(EFT/ESD)保护的低功耗、空间受限电路。该器件具有低结电容、低漏电和高脉冲能量吸收能力,适合保护数据线、通讯接口及 24V 级别的电源和信号线路。

二、主要规格与电气参数

  • 极性:双向(Bi-directional)
  • 反向截止电压 Vrwm:24 V(稳态工作电压)
  • 击穿电压(Vbr):29 V(典型)
  • 钳位电压:约 36 V ~ 48 V(随脉冲电流不同,8/20 µs 测试条件下)
  • 峰值脉冲电流 Ipp:6 A @ 8/20 µs
  • 峰值脉冲功率 Ppp:450 W @ 8/20 µs
  • 反向电流 Ir:1 µA(在 Vrwm 条件下)
  • 结电容 Cj:约 1.5 pF(适合高速信号应用)
  • 工作温度范围:-55 ℃ ~ +150 ℃
  • 防护等级 / 通过标准:符合 IEC 61000-4-2(ESD)与 IEC 61000-4-4(EFT)
  • 封装:SOD-323(表面贴装)

三、性能特点

  • 双向保护:对正负极性瞬态抑制能力对称,适合双向信号或可反向电压环境,如通信线路、差分信号及交流脉冲场景。
  • 低结电容(1.5 pF):对高速信号线(如 CAN、UART、一些低速以太网或串行接口)影响小,能在保证信号完整性的同时提供保护。
  • 高脉冲能量吸收(450 W @ 8/20 µs):能承受工业场景常见的浪涌与脉冲干扰,峰值电流 6 A 可应对短时高能脉冲。
  • 低漏电流(1 µA):适合电池供电或低功耗系统,减少静态能耗与误触发风险。
  • 宽温度范围与小体积封装:适用于工业级温度及空间受限的终端设备、模块化板卡和嵌入式产品。

四、典型应用

  • 工业控制总线与 I/O 端口(24 V 控制电源线保护)
  • 通信接口与串行信号保护(如 CAN 总线、RS-485、调制解调器端口)
  • 电源输入保护与反接/浪涌防护(短时浪涌或脉冲抑制)
  • 消费类与便携终端中对接口的 ESD 抗扰度加强
  • 汽车电子的低压辅助电路(需评估汽车专项认证要求)

五、设计与布局建议

  • 贴近保护目标布局:将 PTVSLC3D24VB 放置于受保护引脚或连线的入口处,尽量靠近外部连线与接插件,缩短输入到 TVS 的走线长度以降低耦合感应。
  • 地线处理:对于敏感电路,确保 TVS 到地的回流路径短且粗,必要时在 PCB 地层加固接地回流区域,避免干扰扩散。
  • 与滤波器配合:对高速/高频线路可配合串联阻抗(如微小电感、阻容滤波)改善系统对瞬态的整体抑制,但要注意滤波器与 TVS 的交互不会影响信号完整性。
  • 温升与散热:尽管器件能承受高峰值能量,但为保证长期可靠性应避免频繁大能量冲击;在高脉冲环境下考虑散热管理与器件间隔布置。
  • 选型匹配:确认系统稳态最高电压不超过 24 V(Vrwm),并且钳位电压(36–48 V 范围)不会对下游器件造成不可接受的应力。

六、可靠性与标准认证

PTVSLC3D24VB 针对工业与商用电磁兼容场景进行了设计,满足 IEC 61000-4-2(静电放电)和 IEC 61000-4-4(电快速瞬变)测试要求。器件在 -55 ℃ 至 +150 ℃ 的工作温度范围内保持稳健性能,适合严苛环境使用。仍建议在最终产品认证中结合整机测试验证 TVS 对系统的实际保护效果。

七、选型注意事项与替代建议

  • 确认极性需求:若保护对象为单向供电(且反向不会出现),单向 TVS 可能具有更低钳位与更高效率;对可反极性或差分信号场景首选双向。
  • 钳位电压评估:系统中下游元件能承受的最大瞬态电压应高于 Vrwm 且低于器件钳位电压;若 36–48 V 钳位范围对后级敏感,应选择钳位更低或并联更大能量的保护方案。
  • 高速接口:凭借 1.5 pF 的低结电容,适配多数低速与中速通信线;对于极高速信号(如 USB3、PCIe)需选择专用低容 TVS 或其他保护方式。

总结:PTVSLC3D24VB 在体积、低电容与抗瞬态能量之间取得平衡,适合用于对空间与信号完整性要求较高的 24 V 级别及双向信号保护场景。根据具体应用的最大稳态电压与可接受的钳位电压范围进行选型,并结合合理的 PCB 布局与散热设计,可获得稳定可靠的过压、ESD 与 EFT 抑制效果。

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