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TDK AVRM1608C390KT271N
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- TDK AVRM1608C390KT271N
- Type
- TDK
- Unit
- Electronic Component
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- TDK
- Electronic Component
- AVRM1608C390KT271N
- Electronic Component
- 1
- Package
- 0603
- Electronic Component
- Varistor Resistor
- Electronic Component
- 100mJ
- Electronic Component
- 0.033g
- Electronic Component
- 1
- Varistor Voltage
- 39V
- Electronic Component
- BM0258885418
- Voltage
- 69V
- Static Capacitor
- 270pF@1kHz
- Operating Voltage(DC)
- 28V
- Surge Current
- 78A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
AVRM1608C390KT271N 产品概述
一、产品简介
AVRM1608C390KT271N 为 TDK 推出的贴片压敏电阻（Varistor），封装为 0603（公制 1608），专为中低电压直流线路的浪涌与过压保护设计。其基础电气参数如下：
- 压敏电压（标称）：39 V
- 钳位电压（峰值）：69 V
- 工作电压（DC）：28 V
- 峰值浪涌电流（Ipp）：78 A
- 吸收能量：100 mJ
- 静态电容：270 pF @ 1 kHz
该器件在体积极小（0603）同时具备较高瞬态抑制能力，适用于空间受限且需具备可靠过压保护的应用场景。
二、电气特性与设计意图
该型号以 39 V 压敏点为基准，在超过此阈值时迅速导通，实现对后端电路的钳位保护；69 V 的钳位电压表明在受冲击时能将电压限制于可控范围内。78 A 的峰值浪涌电流与 100 mJ 的吸收能量体现了其在短时脉冲（如开关冲击、电感回弹、线路雷击诱发尖峰）下的防护能力。270 pF 的静态电容比较大，说明该器件在高频信号线上会引入一定的负载，需在高速信号路径使用时充分评估对信号完整性的影响。
三、封装与典型应用
0603 超小封装便于在高密度 PCB 上布局，适配主流 SMT 回流焊工艺。典型应用包括但不限于：
- 28 V 级直流供电总线和分支护线的浪涌保护
- 工业与通信设备的输入电源防护
- 小型电源模组、接口电源口与配电板的瞬态抑制
由于静态电容较高，不推荐用于对信号完整性敏感的高速数据线（如差分高速信号）的直接保护，除非经过专项信号仿真验证。
四、选型与使用建议
- 布局：靠近需保护的接入端或器件放置，最短引线与清晰接地回流路径可提升保护效果。
- 焊接：兼容常规 SMT 回流焊工艺，建议遵循制造商回流曲线以避免热应力损伤。
- 考虑电容影响：在高速信号或精密模拟通道中，应权衡 270 pF 对带宽与阻抗的影响，必要时改用低电容类浪涌保护器件。
- 可靠性：若应用中存在多次大能量浪涌场景，应评估器件累积损耗与热稳定性，按需留足安全裕度或采用并联/级联方案。
综上，AVRM1608C390KT271N 在体积受限且需对 28 V 级电源或接口进行瞬态过压保护的场合表现均衡，是追求小尺寸与中等浪涌能力设计的合适选择。
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