WMSIC Electronic Components

ROHM KTR18EZPF49R9

ModelKTR18EZPF49R9
Package1206
BrandROHM
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
ROHM KTR18EZPF49R9
Type
ROHM
Minimum package
5000 圆盘

Technical parameters

Power
250mW
Electronic Component
Electronic Component
Electronic Component
ROHM
Electronic Component
KTR18EZPF49R9
Electronic Component
1
Package
1206
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.028g
Electronic Component
49.9Ω
Electronic Component
1
Electronic Component
BM0263448080
Operating Temperature
55℃~+155℃
Operating Voltage
500V
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.

ROHM KTR18EZPF49R9 厚膜贴片电阻产品概述

ROHM(罗姆)推出的KTR18EZPF49R9是一款针对通用电路设计的厚膜贴片电阻,凭借平衡的精度、功率与环境适应性,成为工业控制、消费电子等领域的常用选型。以下从核心参数、工艺特性、性能表现等维度展开概述:

一、产品核心定位与基础参数

KTR18EZPF49R9定位于中等功率高精度厚膜贴片电阻,核心参数明确覆盖常规电路需求:

  • 阻值:49.9Ω(非标准整数值,适配分压、阻抗匹配等细分场景);
  • 精度:±1%(满足多数工业设备、消费电子对阻值一致性的要求);
  • 功率:250mW(可稳定承载小功率负载,避免过载风险);
  • 工作电压:500V(高于普通贴片电阻的典型值,支持高压小电流电路);
  • 温度系数:±100ppm/℃(温度变化对阻值的影响可控,适合温变环境);
  • 工作温度:-55℃~+155℃(覆盖工业级温度范围,适配户外、高温设备)。

二、封装工艺与物理特性

该电阻采用1206封装(英制尺寸,对应公制3216),是贴片电阻的主流封装之一:

  • 尺寸紧凑(约3.2mm×1.6mm),适配高密度PCB布局,节省板级空间;
  • 厚膜工艺制造:通过丝网印刷、烧结等工艺形成电阻层,兼具成本优势与性能稳定性——比薄膜电阻更耐过流冲击,比线绕电阻更易小型化;
  • 贴片式设计:支持自动化贴装(SMT),提升生产效率,降低人工成本。

三、电气性能关键优势

  1. 精度一致性:±1%的精度在厚膜电阻中属于较高水平,可满足信号调理、分压电路等对阻值偏差敏感的场景,避免因阻值误差导致的信号失真;
  2. 功率与电压平衡:250mW功率可稳定承载小功率负载(如LED驱动、传感器供电),500V工作电压则支持高压小电流电路(如电源滤波、高压分压),覆盖更多应用场景;
  3. 温阻稳定性:±100ppm/℃的温度系数,意味着在-55℃~+155℃范围内,阻值变化最大不超过(155-(-55))×100ppm×49.9Ω≈1.05Ω,远低于精度范围,温变环境下性能稳定。

四、环境适应性表现

KTR18EZPF49R9的宽温区与耐温特性,使其适配复杂环境:

  • 低温耐受:-55℃下仍能保持电气性能稳定,适合北方户外设备、低温存储设备;
  • 高温耐受:+155℃下无性能衰减,可用于工业烤箱、汽车发动机舱周边等高温场景;
  • 抗环境干扰:厚膜电阻的结构相对坚固,对湿度、轻微机械振动的耐受性优于薄膜电阻,适合工业现场等复杂工况。

五、典型应用场景

结合参数特性,该电阻主要应用于以下领域:

  1. 工业控制:传感器信号调理电路(如温度传感器、压力传感器的分压匹配)、PLC输入输出模块的限流电阻;
  2. 消费电子:手机、平板的电源滤波电路、音频设备的信号分压电阻;
  3. 通信设备:路由器、交换机的射频前端小信号处理电路、电源模块的辅助电阻;
  4. 汽车电子:车载辅助系统(如倒车雷达、胎压监测)的低功率电路、车内照明的限流电阻(适配汽车级温区)。

六、品牌可靠性保障

ROHM作为全球知名半导体厂商,其厚膜电阻产品具备成熟的可靠性保障:

  • 工艺一致性:采用标准化生产流程,批量产品阻值偏差、性能一致性高,减少选型风险;
  • 环保合规:符合RoHS、REACH等环保标准,无铅无镉,适配全球市场需求;
  • 长期可靠性:经过老化测试、环境测试等多重验证,可稳定工作数万小时以上,降低设备售后维护成本。

总结:ROHM KTR18EZPF49R9是一款平衡精度、功率与环境适应性的厚膜贴片电阻,1206封装适配主流PCB设计,适合工业、消费电子等多领域的通用电路需求,是替代传统插件电阻、提升电路小型化的优质选型。

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