WMSIC Electronic Components

JDTfuse ASMD2920-400 ASMD2920

ModelASMD2920-400
Package2920
BrandJDTfuse
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+

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Technical data

Product details

19 specifications

Core information

Product name
JDTfuse ASMD2920-400
Type
JDTFUSE
Minimum package
1500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
JDTFUSE
Electronic Component
ASMD2920-400
Electronic Component
1
Package
2920
Electronic Component
Resettable Fuse
Electronic Component
0.137g
Electronic Component
1
Electronic Component
4s
Electronic Component
BM0264547810
Operating Temperature
40℃~+85℃
Voltage Rating(Vmax)
16V
Power(Pd)
1.5W
Current(Imax)
40A
Electronic Component
Electronic Component
Electronic Component
1500

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

JDTfuse ASMD2920-400自恢复保险丝产品概述

JDTfuse(集电通)推出的ASMD2920-400是一款专为低压电路设计的表面贴装自恢复保险丝,核心用于过流/过温故障保护,兼具“故障后自动恢复”与“低功耗导通”特性,适配电子设备小型化、高可靠性的应用需求。

一、产品定位与核心类别

ASMD2920-400属于聚合物正温度系数(PPTC)自恢复保险丝,区别于传统一次性保险丝:当电路出现过流(如短路、过载)或过温时,器件阻值快速骤增切断电流;故障排除后(如短路解除、温度回落),阻值自动恢复至低阻状态,无需人工更换,可重复使用,显著降低系统维护成本与停机时间。

二、关键电气参数解析

ASMD2920-400的核心参数精准匹配低压设备保护需求,关键指标如下:

  • 电流特性:保持电流(电路正常工作不动作的最大电流)为4A,跳闸电流(触发动作的最小电流)为8A,最大耐受电流达40A(可承受瞬间浪涌冲击);
  • 阻值特性:初始态最小阻值仅8mΩ,导通损耗极低;跳断后最大阻值为40mΩ,恢复后仍保持低阻抗,不影响电路效率;
  • 时间特性:最大动作时间4s,既保证过流时快速切断保护负载,又避免开机浪涌、瞬间脉冲等误触发;
  • 电压与功率:最大工作电压16V,适配低压直流电路;最大消耗功率1.5W,满足小功率设备的热管理要求;
  • 温度范围:工作温度覆盖-40℃~+85℃,符合工业级环境标准,可在极端温差场景稳定工作。

三、封装形式与物理特性

ASMD2920-400采用2920表面贴装封装(尺寸约2.9mm×2.0mm),属于小型化贴片规格,适配自动化贴装工艺,可有效节省PCB空间,符合当前电子设备“轻薄化”的设计趋势。封装设计兼顾散热与可靠性,能快速传递过温信号触发保护,同时避免机械应力对器件性能的影响。

四、核心性能优势

  1. 自恢复免维护:故障排除后自动恢复导通,无需更换器件,适合无人值守或维护不便的场景(如车载、工业传感器);
  2. 低功耗导通:初始8mΩ低阻值,导通时压降极小,不影响电路正常工作效率,尤其适合对功耗敏感的便携设备;
  3. 宽温稳定工作:-40℃~+85℃的温度范围,可覆盖户外、车载等温差较大的应用环境,性能不衰减;
  4. 快速响应与抗误触发:4s内完成动作,既快速切断过流,又能过滤瞬间脉冲(如静电、开机浪涌),避免误保护导致的设备停机;
  5. 高耐流能力:40A最大耐受电流,可承受突发浪涌冲击,降低器件损坏风险。

五、典型应用场景

ASMD2920-400的参数特性使其适配多类低压设备的保护需求,典型应用包括:

  • 消费电子:手机、平板、智能穿戴设备的电池保护模块(过充/过放/过流保护);
  • 智能家居:智能灯泡、传感器节点、小型家电的电源回路保护;
  • 工业控制:小型PLC、远程IO模块、传感器的过流保护;
  • 车载电子:车载充电器、行车记录仪、胎压监测系统的低压保护电路;
  • 通信设备:小型基站、路由器、光模块的电源模块保护。

综上,JDTfuse ASMD2920-400自恢复保险丝以“自恢复特性+低功耗+宽温适应”为核心优势,是低压电路过流/过温保护的高性价比选择,可满足消费电子、工业、车载等多领域的可靠性需求。

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