WMSIC Electronic Components

JDTfuse A72-050

ModelA72-050
PackageThrough-hole
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+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
JDTfuse A72-050
Type
JDTFUSE
Minimum package
1000 袋装

Technical parameters

Electronic Component
Electronic Component
Electronic Component
JDTFUSE
Electronic Component
A72-050
Electronic Component
1
Package
Through-hole
Electronic Component
Resettable Fuse
Electronic Component
0.187g
Electronic Component
1
Electronic Component
4s
Electronic Component
BM0265001232
Operating Temperature
40℃~+85℃
Voltage Rating(Vmax)
72V
Power(Pd)
800mW
Current(Imax)
40A
Electronic Component
Electronic Component
Electronic Component
1000

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

A72-050 产品概述

A72-050 是集电通(JDTfuse)推出的一款插件式保护元件,针对中高压(最高72V)系统的过流/短路保护设计。产品通过 UL 认证,具有稳定的品质和良好的性价比,适合通信、电源、电动交通工具周边保护及工业控制等多种应用场景。

一、主要技术参数

  • 耐压(Vmax):72 V
  • 最大电流(Imax):40 A(器件允许的极限或短时冲击电流,请在具体应用中参考脉冲/热容条件)
  • 保持电流(Ihold):0.5 A(500 mA)
  • 跳闸电流(Itrip):1 A
  • 消耗功率(Pd):800 mW(额定工作条件下的最大功耗)
  • 初始态阻值(Rmin):0.4 Ω(400 mΩ)
  • 跳断后阻值(R1max):1.2 Ω
  • 动作时间:4 s(达到规定过流条件时的典型动作时间)
  • 工作温度范围:-40 ℃ 至 +85 ℃
  • 认证:UL 认证
  • 品牌:JDTfuse(集电通)
  • 封装:插件(便于现场替换与维护)

二、产品特点与优势

  • 高电压适配:72V 耐压等级适合大多数48V、60V及更高电压系统,能满足电动工具、电动自行车及储能设备等的保护需求。
  • 明确的动作特性:0.5A 保持、1A 跳闸配合 4s 动作时间,便于工程师针对稳态工作电流与短时过流进行精确匹配与设置。
  • 低导通阻抗与可控跳断后阻抗:初始态 0.4Ω 的低电阻减少正常工作时能量损耗,跳断后阻值上升至最大 1.2Ω,显著限制故障电流。
  • 良好短时耐受能力:标示最大电流 40A,体现了器件对短时冲击电流的承受能力(具体脉冲能量需结合应用情形评估)。
  • 宽温区可靠工作:-40℃ 至 +85℃ 的工作范围适合绝大多数室内外和工业环境。
  • UL 认证:满足国际安全标准,便于系统通过整机认证。

三、典型应用场景

  • 通信基站与配电设备的线路保护与防误接保护
  • 48V/60V/72V 等小型电动车、电动自行车及电动工具的过流保护
  • 储能与逆变器周边的前端保护与模块化电源保护
  • 工业控制柜、自动化设备的模块级保护、测试平台保护

四、使用与选型建议

  • 选型依据:将保持电流(Ihold)设定在正常工作电流略高的位置,避免误动作;选择跳闸电流(Itrip)使其高于正常峰值但低于器件或线路允许的安全阈值。
  • 电压裕量:系统电压不得超过器件耐压 72V,建议预留一定裕量以应对瞬态过电压。
  • 热管理:尽量减小持续功耗和局部热聚集,Pd=800mW 为参考最大耗散,实际应用中需注意散热路径及附近元件耐温。
  • 冲击电流评估:若系统存在大电流短脉冲(如电机启动、电容充电),请结合具体脉冲宽度与频率评估 Imax=40A 的适用性或做必要的保护配合。
  • 插件安装:插件形式利于现场更换,建议在设计 PCB 与机械安装时留足更换空间及牢固固定点。

五、可靠性与合规性

A72-050 经 UL 认证,符合相关安全与可靠性规范;-40°C~+85°C 的工作温度域及较低初始阻抗保证了长期稳定运行。集电通在元件制造与出厂测试上有严格控制,产品一致性与批间变异率小,适合对可靠性要求较高的工程项目。

六、总结

A72-050 是一款面向中高电压系统的插件式过流保护器件,结合 72V 耐压、0.5A 保持电流、1A 跳闸电流及 4s 动作时间的特性,提供了明确的保护行为与便捷的维护方式。UL 认证与宽温区工作能力使其在通信、电源、储能及交通等领域具有较高的适用性与成本效益。工程选型时应依据系统实际电流、脉冲特性与热条件做进一步验证,以确保最佳保护效果。若需获取详细的 I-V 曲线、动作时间曲线及样品测试报告,请联系集电通(JDTfuse)或其授权代理。

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