WMSIC Electronic Components

LUTE 2920L400/30GR 2920L400

Model2920L400/30GR
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LUTE 2920L400 / 30GR
Type
LUTE
Minimum package
1500 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LUTE
Electronic Component
2920L400/30GR
Electronic Component
1
Electronic Component
5.44mm
Package
2920
Electronic Component
Resettable Fuse
Electronic Component
0.192g
Electronic Component
7.98mm
Electronic Component
1.6mm
Electronic Component
1
Electronic Component
4s
Electronic Component
BM0264548603
Operating Temperature
40℃~+85℃
Voltage Rating(Vmax)
30V
Power(Pd)
2.5W

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

2920L400/30GR 自恢复保险丝产品概述

一、产品核心定位

2920L400/30GR是LUTE(陆特) 品牌推出的一款小型化贴片自恢复保险丝(PPTC),专为中低电压、中等电流场景的过流/过载防护设计。该产品平衡了低导通阻抗、精准动作特性与宽环境适应性,可替代传统一次性保险丝,实现故障排除后的自动恢复,广泛适用于消费电子、小型家电、汽车电子等紧凑化设备的防护需求。

二、关键电气性能参数

作为过流保护器件,其核心电气参数直接决定防护可靠性,2920L400/30GR的关键指标如下:

  • 电压等级:最大耐压(Vmax)30V(直流/交流通用),满足多数低中压设备的电压需求;
  • 电流特性:
    • 保持电流(Ihold):4A(设备正常工作时,电流≤4A可稳定导通,不触发保护);
    • 跳闸电流(Itrip):8A(电流≥8A时,器件在规定时间内动作跳断);
    • 最大电流(Imax):40A(短时间内可承受的峰值电流,避免浪涌损坏);
  • 阻抗与功率:
    • 初始态最小阻值(Rmin):8mΩ(低导通阻抗,导通损耗仅约I²R,对设备正常工作影响极小);
    • 跳断后最大阻值(R1max):40mΩ(故障时有效阻断大电流,降低后级电路损坏风险);
    • 消耗功率(Pd):2.5W(热容量合理,既保证动作响应,又避免误触发);
  • 动作时间:4s(在跳闸电流下,4秒内完成跳断,兼顾浪涌耐受与过载保护的时间差)。

三、机械与环境适应性

  1. 封装与尺寸:采用2920贴片封装,具体尺寸为7.98mm(长)×5.44mm(宽)×1.6mm(高),体积小巧,可节省PCB布局空间,适配紧凑型设备设计;
  2. 温度范围:工作温度覆盖**-40℃~+85℃**,属于工业级宽温范围,可适应低温环境(如北方户外设备)、高温环境(如充电设备内部散热)等复杂场景;
  3. 安装兼容性:贴片封装支持回流焊工艺,与常规SMT生产线兼容,生产效率高,且焊接后稳定性好,不易受振动影响。

四、典型应用场景

2920L400/30GR的参数特性使其适配以下常见场景:

  • 消费电子:移动电源(输出过流保护)、蓝牙耳机充电仓(电池过充/过放防护)、智能手环充电模块;
  • 小型家电:智能插座(过载保护)、微型加湿器(电路短路防护)、桌面USB集线器;
  • 汽车电子:车载USB充电器(12V系统过流保护)、小功率车载设备(如行车记录仪供电防护);
  • 工业控制:小型PLC模块(输入输出端口防护)、传感器节点(信号线路过流防护)。

五、产品核心优势

  1. 低损耗设计:初始8mΩ的低阻抗,使导通时的功率损耗极低(以3A工作电流为例,损耗仅约72mW),不影响设备性能;
  2. 精准动作特性:Ihold与Itrip的比例(1:2)合理,既避免小电流波动导致的误动作,又能在过载时快速响应(4s动作时间);
  3. 可恢复特性:故障排除(如短路移除)后,器件自动恢复低阻状态,无需更换,降低维护成本与设备返修率;
  4. 宽温可靠性:-40℃~+85℃的温区覆盖,满足不同地域、不同工作环境的设备需求;
  5. 小型化适配:2920封装适合现代设备的紧凑化设计趋势,尤其适用于空间受限的便携设备。

六、选型与应用注意事项

  1. 电压匹配:确保设备工作电压不超过30V,避免器件耐压不足;
  2. 电流余量:实际工作电流建议控制在Ihold(4A)的80%以内(即≤3.2A),预留余量以应对电流波动;
  3. 浪涌耐受:4s动作时间适合有短暂浪涌(如电机启动)的场景,若需更快速动作,需结合实际需求选型;
  4. 焊接要求:回流焊温度需符合LUTE官方推荐参数,避免高温损坏器件;
  5. 存储条件:存储温度建议在-10℃~+40℃,湿度≤60%,防止器件受潮影响性能。

总结:2920L400/30GR是一款性能均衡的小型化自恢复保险丝,凭借低阻抗、精准动作、宽温适应性等优势,成为中低电压中等电流场景的可靠过流防护选择。

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