WMSIC Electronic Components

BOURNS CRA2512-FZ-R030ELF

ModelCRA2512-FZ-R030ELF
Package2512
BrandBOURNS
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 25+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
BOURNS CRA2512-FZ-R030ELF
Type
BOURNS
Unit
Electronic Component
Minimum package
4000 圆盘

Technical parameters

Power
3W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
BOURNS
Electronic Component
CRA2512-FZ-R030ELF
Electronic Component
1
Package
2512
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.137g
Electronic Component
30mΩ
Electronic Component
1
Electronic Component
BM0264866350
Operating Temperature
55℃~+170℃
Electronic Component
±50ppm/℃
Electronic Component
Electronic Component

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

BOURNS CRA2512-FZ-R030ELF 功率贴片电阻产品概述

BOURNS作为全球被动元件领域的老牌厂商,其CRA2512-FZ-R030ELF是一款专为宽温环境、高可靠性电流检测设计的低阻值功率贴片电阻,广泛覆盖工业自动化、汽车电子、电源设备等核心场景。以下从核心参数、封装特性、性能优势、典型应用及可靠性等维度展开详细概述。

一、核心电气参数详解

该电阻的参数精准匹配中功率电流传感与功率耗散需求,关键参数的实际意义如下:

  • 阻值与精度:30mΩ(毫欧级)±1%
    低阻值设计可大幅降低分流电阻的功耗(如10A电流下仅0.3V压降),避免对原电路的干扰;±1%精度满足工业级电流测量要求(100A电流下误差仅±1A),无需额外校准即可实现可靠检测。
  • 额定功率:3W(70℃环境温度下)
    支持中等功率场景的持续工作,短时间内可承受10倍额定功率(30W)的浪涌(适配电源启动、负载突变等场景)。
  • 温度系数:±50ppm/℃
    远优于普通碳膜电阻(通常±200ppm/℃),温度每变化1℃,阻值漂移仅±50×10⁻⁶Ω,在宽温环境下保持测量稳定性。
  • 工作温度范围:-55℃~+170℃
    覆盖极端环境(如汽车发动机舱、工业高温车间),满足汽车级及工业级的温度适应性要求。

二、封装与物理尺寸

采用2512贴片封装(英制:250mil×120mil;公制:6.4mm×3.2mm),具备三大核心优势:

  1. 自动化生产适配:表面贴装结构支持高速贴片机作业,提高生产效率,降低人工成本;
  2. 空间高效利用:相比同功率插件电阻体积减少约30%,适合高密度PCB设计(如汽车BMS、小型电源模块);
  3. 散热优化:贴片直接与PCB铜箔贴合,热传导路径短,可快速将工作热量传递至PCB,避免局部过热导致的阻值漂移。

三、关键性能特点

  1. 低阻高精度,适配电流传感
    30mΩ毫欧级阻值+±1%精度是电流分流器的理想选择——在变频器IGBT模块、汽车BMS等场景中,低阻值可减少对原电路的干扰,高精度则保证电流测量的准确性,避免过流保护误触发。
  2. 宽温稳定,抗漂移能力强
    ±50ppm/℃温度系数结合-55~+170℃工作范围,可在温度剧烈变化的场景(如汽车冬季低温启动、夏季发动机舱高温)保持阻值稳定,无需额外温度补偿电路。
  3. 高功率密度,小体积大功率
    3W功率集成于2512封装,功率密度达约150mW/mm²,满足紧凑型设备对功率电阻的需求(如LED驱动电源、小型服务器电源)。
  4. 品牌工艺,长期可靠性
    BOURNS采用合金箔电阻技术(非普通金属膜),电阻体一致性好,抗老化能力强——1000小时高温老化后阻值漂移≤0.5%,远优于行业平均水平。

四、典型应用场景

  1. 汽车电子系统
    • 电池管理系统(BMS):单体电池/模组的电流检测(10A~100A范围),宽温范围适配汽车环境;
    • 电机控制器:EPS电动助力转向、混动/纯电驱动电机的电流反馈,抗振动封装满足汽车行驶振动要求(通过AEC-Q200振动测试)。
  2. 工业自动化
    • 变频器/伺服驱动器:IGBT模块的电流检测,防止过流损坏;
    • 机器人关节伺服:电机电流监控,保证运动精度。
  3. 电源设备
    • 开关电源:输出电流检测及过流保护;
    • LED驱动电源:大功率LED的电流限流与检测(3W功率匹配100W LED驱动的电流需求)。
  4. 通信设备
    • 基站电源:整流模块的电流监控,保证供电稳定;
    • 服务器电源:机架式电源的过流保护(高密度PCB适配2512封装)。

五、可靠性与环境适应性

  1. 认证适配:符合AEC-Q200汽车级可靠性标准,通过振动(10G2000Hz)、温度循环(-55+170℃,1000次循环)、湿度(85℃/85%RH,1000小时)等严苛测试;
  2. 抗浪涌能力:可承受10倍额定功率(30W)的短时间浪涌(1ms),适配电源启动、负载突变等场景;
  3. 焊接可靠性:采用耐高温焊端设计,支持无铅回流焊工艺,焊接后焊点强度符合IPC-A-610标准,抗振动脱落能力强(汽车行驶振动环境下无焊点开裂风险)。

总结:BOURNS CRA2512-FZ-R030ELF以低阻值、高精度、宽温稳定、高功率密度为核心优势,结合成熟的品牌工艺与汽车级可靠性,是工业自动化、汽车电子等领域电流检测及功率耗散场景的优选功率贴片电阻。

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