WMSIC Electronic Components

KOA RK73H1ETTP3901F

ModelRK73H1ETTP3901F
Package0402
BrandKOA
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
KOA RK73H1ETTP3901F
Type
KOA
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
KOA
Electronic Component
RK73H1ETTP3901F
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
3.9kΩ
Electronic Component
1
Electronic Component
BM0265802649
Operating Temperature
55℃~+155℃
Operating Voltage
75V
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.

RK73H1ETTP3901F 厚膜贴片电阻产品概述

RK73H1ETTP3901F是日本KOA公司推出的0402封装厚膜贴片电阻,针对高密度、高可靠性电子电路设计,兼顾成本与性能,广泛应用于消费电子、工业控制、通信设备等领域。以下从核心参数、应用场景、可靠性等维度展开详细概述。

一、产品定位与核心应用场景

RK73H1ETTP3901F属于KOA RK73系列通用厚膜电阻,定位中端市场,主打小尺寸、稳定精度、宽温适应性三大核心优势,适合需要紧凑布局且对阻值稳定性有一定要求的电路设计:

  • 消费电子:智能手机、平板电脑、可穿戴设备的电源管理、信号滤波电路(如音频滤波、传感器接口);
  • 工业控制:PLC模块、传感器信号调理电路、电机驱动辅助电路(耐高低温满足工业现场环境);
  • 通信设备:基站射频前端的偏置电路、光纤收发器的电平匹配电路;
  • 汽车电子:低功耗辅助电路(如仪表盘背光控制、传感器信号转换,工作温度覆盖-55℃~155℃满足车载环境需求)。

二、关键技术参数详解

该电阻的核心参数均经过KOA严格校准与测试,具体如下:

2.1 阻值与精度

  • 标称阻值:3.9kΩ(电阻代码3901,前三位390为有效数字,第四位1为倍率10¹);
  • 精度等级:±1%(F级精度),满足大多数中端电路的阻值匹配需求,避免因电阻误差导致的信号偏移、电源电压波动等问题。

2.2 功率与电压特性

  • 额定功率:100mW(0.1W),为0402封装厚膜电阻的典型功率等级;
  • 工作电压:需注意两个关键值——① 功率对应电压:√(P×R)=√(0.1×3900)≈19.7V(实际工作电压应不超过此值,避免过功率);② 最大耐压:75V(无功率时的绝缘耐压,需结合电路实际工况综合判断)。

2.3 温度稳定性

  • 温度系数(TCR):±100ppm/℃,即温度每变化1℃,阻值变化±0.01%;
  • 温度范围变化量:从-55℃到155℃(温差210℃),总阻值变化为±210×100ppm=±2.1%,结合±1%精度,整体误差范围≤±3.1%,满足宽温环境下的性能稳定。

2.4 工作温度范围

  • 额定工作温度:-55℃~+155℃,覆盖工业级(通常-40℃125℃)及部分汽车级(-55℃150℃)的温度需求,适合极端环境应用。

三、封装与物理特性

RK73H1ETTP3901F采用0402封装(英制:0.04″×0.02″,公制:1.0mm×0.5mm),是当前小型化电子设备的主流封装之一:

  • 典型物理尺寸:长1.0±0.1mm,宽0.5±0.1mm,厚0.3±0.1mm;
  • 端电极设计:采用KOA专利的镍锡合金端电极,兼具焊接可靠性(与PCB焊盘兼容性好)和耐老化性(避免长期使用后端电极腐蚀);
  • 封装材料:厚膜电阻基体采用高稳定性氧化铝陶瓷,确保电阻膜层的附着性与温度稳定性。

四、可靠性与环境适应性

作为KOA的成熟产品,RK73H1ETTP3901F通过多项可靠性测试,满足全球标准:

  • 耐老化测试:125℃下连续工作1000小时,阻值变化≤0.5%,端电极无脱落;
  • 机械可靠性:符合JIS C 5063标准,能承受1000m/s²(1ms)冲击、10~2000Hz(1g)振动,适合移动设备或工业振动环境;
  • 湿度适应性:85℃/85%RH环境下工作1000小时,阻值变化≤1%,端电极无氧化腐蚀;
  • 静电防护:ESD等级≥2kV(人体模型),生产过程中无需额外复杂的静电防护措施。

五、品牌与品质保障

KOA作为全球知名无源器件制造商,拥有60余年电阻研发生产经验,RK73系列产品具备以下品质优势:

  • 认证合规:通过ISO 9001质量管理体系、ISO/TS 16949汽车级认证、RoHS(无铅环保)及REACH标准,符合全球市场准入要求;
  • 供应链稳定:全球布局生产基地(日本、中国、东南亚),批量供货周期≤4周,适合大规模量产;
  • 技术支持:提供详细的选型手册、焊接规范、应用案例,助力客户快速完成电路设计与验证。

六、选型与应用注意事项

为确保电路性能与产品寿命,需注意以下几点:

  1. 功率降额:实际工作功率建议不超过额定功率的80%(即80mW),避免长期过热导致阻值漂移;
  2. 电压匹配:实际工作电压需低于功率对应电压(≤19.7V),若电路电压较高,需串联分压或选用更高功率电阻;
  3. 温度补偿:在高低温环境下,需预留阻值变化的余量(如设计反馈电路时,可通过并联微调电阻补偿温度漂移);
  4. 焊接工艺:采用回流焊(峰值温度230~245℃,焊接时间≤30s),避免手工焊导致的热损伤;
  5. 静电防护:生产过程中需佩戴防静电手环,避免直接接触电阻端电极。

综上,RK73H1ETTP3901F是一款高性价比、高可靠性的0402厚膜贴片电阻,适合多种中端电子设备的电路设计,是替代传统碳膜电阻、满足小型化需求的理想选择。

Request for quote

Send RFQ

Use the form for single models, category sourcing, and multi-line BOM requirements.

Send your target model and quantity.

Product sourcing intelligence

Model, package, availability, and BOM fit reviewed before quotation.

WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.

Electronic component model and package intelligence review on an ESD-safe inspection bench

Model & package intelligence

Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.

BOM matching and alternative component comparison workstation with protected IC samples

BOM matching & alternatives

BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.

Electronic component sourcing availability dashboard with ESD-protected samples

Sourcing availability signal

Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.

Buyer sourcing scenarios

Examples of how common component sourcing requests are organized.

Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.

The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.

Package confirmation Typical RFQ workflow

A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.

Mixed BOM triage Typical RFQ workflow

The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.

Obsolete-part review Typical RFQ workflow

Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.

Small-batch request Typical RFQ workflow

Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.

Repair batch evidence Typical RFQ workflow

When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.

Model suffix clarification Typical RFQ workflow

Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.

Export handoff Typical RFQ workflow

The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.

Replenishment inquiry Typical RFQ workflow

Related products

Packaged components ready for RFQ.