WMSIC Electronic Components

ROHM KTR03EZPF1003

ModelKTR03EZPF1003
Package0603
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 Date code within 2 years

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
ROHM KTR03EZPF1003
Type
ROHM
Unit
Electronic Component
Minimum package
5000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
ROHM
Electronic Component
KTR03EZPF1003
Electronic Component
1
Package
0603
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.021g
Electronic Component
100kΩ
Electronic Component
1
Electronic Component
BM0230029970
Operating Temperature
55℃~+155℃
Operating Voltage
350V
Electronic Component
±100ppm/℃

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

KTR03EZPF1003 产品概述

一、产品简介

KTR03EZPF1003 是 ROHM(罗姆)推出的一款贴片厚膜电阻,封装为 0603(约 1.6 mm × 0.8 mm),标称阻值 100 kΩ,精度 ±1%,额定功率 100 mW。该型号适用于体积受限的表面贴装电路,兼顾成本与通用性,常用于拉/下拉、电压分压与信号偏置等场合。

二、关键参数详解

  • 阻值:100 kΩ,适合高阻值应用,如偏置电路与高阻抗测量通路。
  • 精度:±1%,属于中高精度厚膜等级,可满足多数精密但非超高精度的场合。
  • 额定功率:100 mW(0.1 W),需注意功耗限制与散热环境。基于功率的最大允许直流电压可由公式 Vmax = sqrt(P·R) 计算,带入数值:Vmax = sqrt(0.1 × 100000) ≈ 100 V。因此在实际电路设计中,即便器件标注“工作电压 350 V”,当跨接在 100 kΩ 时,功耗限制会将连续最大电压限制在约 100 V。
  • 工作电压:标称 350 V(器件耐压/绝缘相关指标),但实际应用时应以功耗限值及环境散热为准。
  • 温度系数(TCR):±100 ppm/°C,表明随温度变化阻值有一定漂移,适用于对温漂有中等要求的设计。
  • 工作温度范围:-55 ℃ ~ +155 ℃,满足工业级温度环境需求。
  • 封装:0603,适合高密度贴装与自动化贴装工艺。

三、性能特点与工艺说明

  • 厚膜工艺:制造成本低、制造良率高,适合大批量通用电阻需求。厚膜电阻的噪声与长期漂移通常高于金属膜电阻,但在多数消费与工业应用中表现足够稳定。
  • 温度与可靠性:宽温度范围与工业级温度系数,使其可在严苛环境下长期工作,但在精密测量或低温漂场合应考虑更低 TCR 的器件。
  • 封装与热管理:0603 小体积限制了热耗散能力,建议在布局时为高阻值或高功率条件留出散热通道,或采用串并联、功率更高的封装以分散热量。

四、典型应用场景

  • 电源与信号偏置:拉/下拉电阻、偏置网络、分压器。
  • 测量与传感前端:作为高阻输入或参考限流元件(在允许的电压/功率范围内)。
  • 消费电子与工业控制:体积受限的 PCB 布局中作为成本敏感部件使用。
  • 低频模拟电路:若对温漂和噪声要求不极端,厚膜 1% 阻值足够使用。

五、选型与使用建议

  • 电压与功耗校验:当用于高阻值时,请首先用 P = V^2 / R 校验实际功耗并确保小于额定 100 mW。若需要长期承受高电压,优先考虑分压、增大阻值或使用额定功率更高的封装。
  • 温度影响评估:若电路对阻值稳定性要求高(尤其随温度变化),建议选用 TCR 更低的产品或进行温度补偿设计。
  • 焊接与可靠性:遵循 ROHM 推荐的回流焊工艺曲线,避免过度热应力;高湿或腐蚀环境下考虑表面保护或选用更高可靠性封装。
  • 备件管理:0603 为常见封装,便于自动化贴装与库存管理,但高阻值器件在静电与污染下更易受影响,应注意储存与搬运环境。

总结:KTR03EZPF1003 以 ROHM 的厚膜制造工艺提供了体积小、精度 1% 的 100 kΩ 贴片电阻,适合多数体积受限且对温漂要求中等的通用电路。在高电压或高功耗应用中需结合功率计算与散热设计,确保长期可靠运行。

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