WMSIC Electronic Components

ERJ2RKF3571X

ModelERJ2RKF3571X
Package0402
BrandPANASONIC
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
PANASONIC ERJ2RKF3571X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF3571X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
3.57kΩ
Electronic Component
1
Electronic Component
BM0264850089
Operating Temperature
55℃~+155℃
Operating Voltage
50V
Electronic Component
±100ppm/℃
Resistor Type
Resistor

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

ERJ2RKF3571X 产品概述

一、产品简介

ERJ2RKF3571X 为松下(PANASONIC)系列的贴片厚膜电阻,0402(1.0 mm × 0.5 mm)封装,标称阻值 3.57 kΩ,精度 ±1%,额定功率 100 mW,额定工作电压 50 V,温度系数 (TCR) ±100 ppm/℃,工作温度范围 -55℃ 至 +155℃。该器件以小封装、高密度装配能力和较好的阻值稳定性为特点,适合空间受限且要求中高精度的电子产品设计。

二、主要电气参数(重点说明)

  • 阻值:3.57 kΩ(3570 Ω)
  • 精度:±1%(适用于一般精密模拟与分压电路)
  • 额定功率:0.10 W(100 mW),为 0402 封装在常温下的典型功率等级
  • 额定工作电压:50 V(器件最大允许电压),但需同时考虑功率限制
  • 温度系数:±100 ppm/℃(表示每摄氏度阻值变化约为 0.01%)
  • 工作温度:-55℃ ~ +155℃(适合宽温环境应用)

说明:基于功率限制的最大安全工作电压可由 Vmax = sqrt(P·R) 估算。对于 3.57 kΩ 与 0.1 W,Vmax ≈ √(0.1×3570) ≈ 18.9 V。因此在实际设计中,若全功率条件下使用,电压应控制在约 19 V 以下;器件标称的 50 V 是绝对电压限制,但不代表在该电压下不会超过功率耗散。

三、热与机械特性

  • 封装尺寸:0402(1.0 mm × 0.5 mm),适用于高密度表面贴装
  • 小体积导致散热能力有限,实际可用功率受 PCB 及焊盘铜厚和散热面积影响明显
  • 建议在 PCB 布局时为该电阻提供合适的铜箔散热路径(扩大焊盘、加热沉铜或短路径过孔)以提升功率承载能力
  • 厚膜工艺具有良好的机械强度及耐焊性,适用于常见 SMT 焊接流程

四、典型应用场景

  • 高频便携设备中的偏置与限流电路(在电压/功耗允许范围内)
  • 精密分压网络、模拟信号链路中的定值电阻(结合 ±1% 精度)
  • 通信设备、仪器仪表、消费电子与工业控制板上空间受限处的通用电阻元件
  • 电流检测以外或非低阻测量场合(0402 功率与热限制使其不适合高功率电流取样)

五、装配与使用建议

  • 焊接:兼容常见的表面贴装焊接工艺;建议遵循制造商焊接指南以避免过热或热冲击
  • 布局:在需要更高功率承载时,增大焊盘金属面积并采用散热过孔以降低结温
  • 温度影响:TCR ±100 ppm/℃ 在大温差下会引起显著阻值漂移(例如从 25℃ 上升到 125℃ 会产生约 1.0% 的阻值变化),在高精度电路中应同时考虑初始公差与温漂叠加效应
  • 电压与功率:严格按电力热限(约 19 V)与实际 PCB 散热条件评估使用电压,避免长期在极限功率下工作以延长可靠性

六、选型与可靠性注意事项

  • 若电路对温漂或噪声敏感,考虑使用金属膜或低 TCR 的薄膜电阻;厚膜电阻在成本、可用性与一般稳定性之间取得平衡
  • 对于较大温度变化或长时间稳定性要求高的场合,应在样机与环境测试中验证阻值漂移与老化特性
  • 在高湿、腐蚀性环境或冲击振动较大的应用中,参考生产商可靠性测试数据或选用有相关认证的产品

总结:ERJ2RKF3571X 为一款适合高密度布局的 0402 厚膜贴片电阻,提供 ±1% 精度与宽温范围,适用于一般精密分压、偏置及空间受限的应用场景。设计时需重点关注功率与温漂对实际阻值的影响,并通过合理的 PCB 散热设计与工艺控制来保证长期可靠性。若需最终设计验证,建议参照松下官方数据表并在目标应用环境下进行样机测试。

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