WMSIC Electronic Components

SEMTECH UCLAMP3311Z.TFT UCLAMP3311Z

ModelUCLAMP3311Z.TFT
Package0201
BrandSEMTECH
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 Electronic Component

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
SEMTECH UCLAMP3311Z.TFT
Type
SEMTECH
Unit
Electronic Component
Minimum package
15000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
SEMTECH
Electronic Component
UCLAMP3311Z.TFT
Electronic Component
1
Package
0201
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.011g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
6pF
Electronic Component
BM0227764833
Operating Temperature
40℃~+85℃
Voltage
7.5V
Electronic Component
IEC 61000-4-2

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

UCLAMP3311Z.TFT 产品概述

UCLAMP3311Z.TFT 是 SEMTECH 推出的一款超小封装单路 TVS(瞬态电压抑制)二极管,专为 3.3V 工作电压的接口与信号线提供高效的静电放电(ESD)和脉冲浪涌保护。器件采用 0201 超小外形,集低结电容、高钳位能力与 IEC 标准防护于一体,适用于空间受限且对信号完整性有要求的现代电子设备。

一、核心参数概览

  • 反向截止电压 (Vrwm):3.3 V
  • 击穿电压 (Vbr):3.65 V
  • 钳位电压 (Vclamp):7.5 V(典型)
  • 峰值脉冲电流 (Ipp):4 A @ 8/20 μs
  • 峰值脉冲功率 (Ppp):30 W
  • 反向漏电流 (Ir):50 nA(在 Vrwm 条件下典型值)
  • 结电容 (Cj):6 pF(典型)
  • 通道数:单路(单向)
  • 工作温度范围:-40 ℃ ~ +85 ℃(@ Tj,按器件规格)
  • 防护等级:符合 IEC 61000-4-2 静电放电防护要求
  • 封装:0201(超小封装)
  • 类型:ESD TVS 二极管

二、产品特性与优势

  • 超小封装(0201):适合手机、可穿戴设备、无线耳机、IoT 芯片及任何对 PCB 面积敏感的应用。体积微小,但依然提供可靠的脉冲保护能力。
  • 低结电容(≈6 pF):对高速数据线(如 SPI、I²C、UART 等)影响较小,有利于保持信号完整性。
  • 高效钳位性能:在 8/20 μs 测试条件下可承受 4 A 峰值脉冲电流,典型钳位电压 7.5 V,能在瞬态事件中有效限制电压尖峰,保护后端电路。
  • 低漏电流:在正常工作电压下漏电小(约 50 nA),有助于低功耗系统设计。
  • 单向保护:器件工作于反向偏置状态(反向截止 Vrwm = 3.3V),对于单向信号或电源线提供更精确的钳位控制。

三、典型应用场景

  • 手机与可穿戴终端的外部接口(耳机插孔、充电/数据口等)
  • IoT 设备与传感器模块的数字/模拟信号线保护
  • 高速通信接口的 ESD 保护(UART、SPI、I²C 等)
  • PCB 空间受限但需满足 IEC 61000-4-2 要求的场合
  • 低功耗微控制器 I/O、外设接口和抗静电设计需求场景

四、设计与布局建议

  • 器件类型为单向 TVS,正常工作时建议阴极(K)接被保护信号线,阳极(A)接地,以实现反向偏置状态下的保护动作。
  • 将 TVS 靠近受保护的输入/连接器放置,并使用最短、低阻抗的接地路径(尽量多用短而多的地vias),以降低环路电感,提升瞬态吸收效果。
  • 对于高能量或重复脉冲场合,建议与串联限流元件(如小阻值电阻或共模滤波器)结合使用,以分散能量并降低器件应力。
  • 0201 封装热量有限,注意在 PCB 走铜和焊盘设计上保证足够的热散能力和焊接可靠性,避免长期承受连续大功率脉冲(本器件为瞬态抑制器,非连续功率吸收器)。
  • 在高速差分或对称信号线上使用前,请评估 6 pF 结电容对带宽和上升沿的影响,必要时在 PCB 上预留测试点进行信号完整性验证。

五、使用限制与可靠性提示

  • TVS 为瞬态保护器件,主要用于吸收短时脉冲(如 8/20 μs 峰值)。不应作为持续电源电压稳压器或承受长期过压。
  • 请参考 SEMTECH 的焊接与回流工艺指南来确定可靠的焊接条件;0201 封装对焊接工艺较敏感,需控制洗板与焊接品质。
  • 器件虽符合 IEC 61000-4-2 静电放电要求,但最终系统级防护仍依赖于总体设计(接地、布线、滤波及屏蔽等)。建议在样机阶段进行系统级电磁兼容(EMC/ESD)验证。

总结:UCLAMP3311Z.TFT 将 SEMTECH 的 TVS 技术凝缩到 0201 超小封装中,适合对空间和信号完整性有双重要求的 3.3V 应用场景。凭借 4A 的瞬态承受能力、约 7.5V 的钳位表现与低结电容特性,能够在对抗静电放电和短时浪涌冲击时,为关键 I/O 与信号链路提供有效保护。若需进一步的电气特性曲线、封装尺寸图或布局参考,请查阅 SEMTECH 官方数据手册或联系采购/技术支持。

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