WMSIC Electronic Components

KOA RK73H1JTTD4991F

ModelRK73H1JTTD4991F
Package0603
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 26+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
KOA RK73H1JTTD4991F
Type
KOA
Unit
Electronic Component
Minimum package
5000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
KOA
Electronic Component
RK73H1JTTD4991F
Electronic Component
1
Package
0603
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.023g
Electronic Component
4.99kΩ
Electronic Component
1
Electronic Component
BM0265802622
Operating Temperature
55℃~+155℃
Operating Voltage
75V
Electronic Component
±100ppm/℃

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

RK73H1JTTD4991F厚膜电阻产品概述

一、产品基本属性与标识解读

RK73H1JTTD4991F是日本KOA公司推出的表面贴装厚膜电阻,核心属性如下:

  • 品牌:KOA(全球知名电子元器件制造商,专注电阻领域超60年)
  • 系列:RK73H(KOA厚膜电阻主力系列,主打小型化、高可靠性)
  • 型号标识解析:
    • “4991”为阻值代码(499×10¹Ω=4.99kΩ);
    • “1%”对应精度等级;
    • “0603”为封装尺寸(英制,公制等效为1608)。
  • 基础类型:厚膜电阻(陶瓷基板+印刷电阻浆料烧结而成)。

二、核心电气性能参数

该电阻的关键电气指标精准匹配中小功率精密电路需求:

  1. 阻值与精度:4.99kΩ±1%,满足大多数信号调理、反馈网络的阻值一致性要求(如分压电路、运放偏置);
  2. 功率额定值:100mW(1/10W),适配低功耗电路(如可穿戴设备、传感器接口),避免功率过载风险;
  3. 工作电压限制:75V(直流/交流峰值),需注意电路中电压不超过此值,防止绝缘击穿;
  4. 温度系数:±100ppm/℃,表示温度每变化1℃,阻值变化±0.01%,宽温下阻值稳定性良好。

三、物理封装与工艺特性

  1. 封装尺寸:0603(英制)/1608(公制),实际尺寸约1.6mm(长)×0.8mm(宽)×0.4mm(厚),体积小巧,适合高密度PCB布局(如智能手机、智能手表的小型电路);
  2. 工艺优势:采用厚膜印刷烧结工艺,在氧化铝陶瓷基板上沉积电阻浆料,经高温烧结形成稳定电阻层——兼具成本可控性与性能可靠性,表面贴装设计支持自动化SMT生产,适配量产需求。

四、工作环境适应性

该电阻覆盖工业级宽温需求:

  • 工作温度范围:-55℃至+155℃,可适配户外通信设备、汽车发动机舱周边电路等极端温度场景;
  • 环境耐受性:厚膜结构抗机械应力能力优于部分薄膜电阻,能承受一定湿度、振动环境,适合 harsh 环境应用。

五、典型应用场景

结合参数特性,该电阻适用于以下场景:

  1. 工业控制模块:PLC输入输出接口的分压电路(宽温下阻值稳定,适配工业现场温度波动);
  2. 消费电子小型电路:蓝牙耳机、智能手环的信号调理电路(0603封装节省空间,100mW功率匹配低功耗设计);
  3. 通信设备信号链路:基站射频前端的偏置电路(±1%精度保证信号质量,75V电压满足小信号偏置需求);
  4. 汽车电子辅助系统:倒车雷达传感器接口电路(-55~155℃宽温范围适配汽车极端温度);
  5. 医疗设备组件:便携式血糖仪的电压检测电路(KOA品牌可靠性保障医疗设备稳定性)。

六、品牌与可靠性保障

KOA作为全球电阻领域头部厂商,该产品具备:

  • 标准合规性:符合IEC 60115、JIS C 5201等国际/国内标准,量产一致性好;
  • 可靠性测试:经过高温老化、温度循环、湿度测试等,长期使用阻值漂移小(典型值<0.1%/1000小时),适合长寿命应用。

总结

RK73H1JTTD4991F是一款性能均衡的小型厚膜电阻,兼顾精度、宽温适应性、成本三大核心需求,是多领域电子电路设计的可靠选择。

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.