WMSIC Electronic Components

LUTE 2920L200/48GR 2920L200

Model2920L200/48GR
Package2920
BrandLUTE
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
LUTE 2920L200 / 48GR
Type
LUTE
Minimum package
1500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LUTE
Electronic Component
2920L200/48GR
Electronic Component
1
Electronic Component
5.44mm
Package
2920
Electronic Component
Resettable Fuse
Electronic Component
0.215g
Electronic Component
7.98mm
Electronic Component
1.4mm
Electronic Component
1
Electronic Component
4.5s
Electronic Component
BM0263555829
Operating Temperature
40℃~+85℃
Voltage Rating(Vmax)
48V
Power(Pd)
2W

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

LUTE 2920L200/48GR 自恢复保险丝产品概述

LUTE(陆特)2920L200/48GR是一款针对低压直流系统设计的贴片式自恢复过流保护器件(PPTC),凭借小型化封装、宽电压耐受、低功耗特性,适配多场景下的持续过流防护需求,替代传统一次性保险丝的重复更换成本。

一、产品核心定位与封装特性

该产品采用2920贴片封装,尺寸为7.98mm(长)×5.44mm(宽),属于小型化表面贴装器件,支持自动化贴装工艺,可直接集成于高密度PCB布局中,满足消费电子、工业控制等领域对空间紧凑的要求。作为陆特品牌的主流过流保护产品,其核心定位是为48V以下低压直流系统提供“自恢复、免维护”的过流防护,核心优势在于“抗瞬态浪涌+重复使用”。

二、关键电气参数深度解析

2920L200/48GR的参数设计精准匹配中等功率低压场景,核心参数及实际意义如下:

  1. 耐压(Vmax=48V):最高工作电压覆盖12V、24V、48V等常见低压直流平台(如汽车辅助电源、通信基站电源),避免过压击穿风险;
  2. 保持电流(Ihold=2A):常温(25℃)下,持续通过2A电流时器件保持低阻状态(不动作),适配中等功率负载(如小型电机、2A充放电电池);
  3. 跳闸电流(Itrip=4A):常温下,当电流超过4A时器件必触发动作(阻值急剧上升),形成明确的“过流阈值”,避免临界电流下的误判;
  4. 动作时间(4.5s):在Itrip=4A条件下,4.5秒内完成阻值切换,可有效过滤瞬态浪涌(如电机启动的100ms级浪涌),防止误保护;
  5. 初始阻值(Rmin=20mΩ):常态下极低阻值,大幅降低正常工作时的功耗(Pd=2W为最大功耗),减少系统发热;
  6. 跳断后阻值(R1max=120mΩ):动作后阻值提升6倍,限制故障电流至安全范围,同时故障排除后可自动恢复低阻,无需人工更换。

三、工作原理与动作特性

该器件基于聚合物正温度系数(PPTC)材料工作,动作逻辑清晰:

  • 常态:温度低于居里点时,材料分子排列紧密,阻值低(20mΩ),电流可顺利通过;
  • 过流触发:电流产生的热量使材料温度升高,超过居里点后分子排列紊乱,阻值急剧上升至120mΩ以上,限制故障电流;
  • 恢复:故障排除后,温度下降至居里点以下,阻值自动恢复低阻,无需外部干预。

其4.5s的动作时间属于“慢响应”范畴,核心优势是抗瞬态浪涌能力强——针对电机启动、电容充电等短时间大电流场景,不会因瞬态浪涌误触发,仅对持续过流(如负载短路、过载)进行有效保护。

四、典型应用场景适配

结合参数特性,2920L200/48GR主要适配以下场景:

  1. 汽车电子:12V/24V辅助电源系统(如车载音响、胎压传感器)、电池管理系统(BMS)的过流保护;
  2. 通信设备:基站电源模块、路由器/交换机的直流输入防护;
  3. 消费电子:笔记本电脑、平板电脑的电池充放电回路、电源适配器输出端;
  4. 工业控制:小型PLC、传感器节点的低压直流供电防护。

五、环境适应性与可靠性

  • 宽温范围:工作温度覆盖-40℃~+85℃,满足户外、工业环境的极端温度需求(如汽车冬季低温启动、夏季高温运行);
  • 可靠性:自恢复特性可重复使用数千次,无需更换保险丝,降低维护成本;
  • 封装可靠性:贴片封装符合IPC标准,抗振动、抗冲击能力适配车载、工业场景的机械应力要求。

六、品牌与规格标识说明

  • 品牌:LUTE(陆特)是国内专注过流保护器件的厂商,产品覆盖PPTC、陶瓷保险丝等,在汽车、工业领域具有成熟应用案例;
  • 型号解析:2920(封装尺寸)+ L(PPTC自恢复类型)+ 200(保持电流2A,标识简化)+ 48(耐压48V)+ GR(封装/材料后缀)。

综上,LUTE 2920L200/48GR以“小型化、低功耗、宽温自恢复”为核心优势,是低压直流系统过流防护的高性价比选择。

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