WMSIC Electronic Components

ROHM ESR03EZPJ470

ModelESR03EZPJ470
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ROHM ESR03EZPJ470
Type
ROHM
Minimum package
5000 圆盘

Technical parameters

Power
250mW
Electronic Component
Electronic Component
Electronic Component
ROHM
Electronic Component
ESR03EZPJ470
Electronic Component
1
Package
0603
Electronic Component
SMD Resistor
Electronic Component
±5%
Electronic Component
0.025g
Electronic Component
47Ω
Electronic Component
1
Electronic Component
BM0265210893
Operating Temperature
55℃~+155℃
Electronic Component
±200ppm/℃
Resistor Type
Resistor
Electronic Component
Electronic Component

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

ROHM ESR03EZPJ470 贴片厚膜电阻产品概述

一、产品核心身份与型号解析

ROHM ESR03EZPJ470是罗姆(ROHM)推出的通用型0603封装厚膜贴片电阻,属于其厚膜电阻系列的基础款。型号命名逻辑清晰:

  • “ESR03”对应封装尺寸(英制0603,公制1608,即1.6mm×0.8mm);
  • “EZPJ”为罗姆厚膜电阻的系列标识,代表常规精度、标准功率的厚膜工艺产品;
  • “470”是阻值编码(前两位“47”为有效数字,第三位“0”为倍率10⁰,即固定阻值47Ω)。

该产品以“性能均衡+成本可控”为核心,覆盖多数中低端电子设备的通用电阻需求。

二、关键电气与物理参数详解

作为一款基础型厚膜电阻,其核心参数适配主流应用场景:

  1. 阻值与精度:47Ω±5%——满足90%以上通用电路的分压、限流需求(如信号偏置、小功率LED驱动),无需高精度校准即可稳定工作;
  2. 功率额定值:250mW(0.25W)——0603封装的典型功率等级,适合低功耗电路(单只最大允许电流约73mA,I=√(P/R)=√(0.25/47)≈73mA);
  3. 温度系数(TCR):±200ppm/℃——温度每变化1℃,阻值变化±200×10⁻⁶,以47Ω为例,100℃温差下阻值变化仅±0.0094Ω,对普通电路影响可忽略;
  4. 工作温度范围:-55℃~+155℃——覆盖工业级宽温要求,可在高温车间、低温户外等极端环境稳定运行;
  5. 封装与焊接:0603表面贴装,兼容主流SMT回流焊工艺,峰值焊接温度≤245℃(符合IPC标准)。

三、厚膜电阻技术的核心优势

相比薄膜电阻(如金属膜、合金膜),厚膜工艺赋予该产品独特价值:

  • 耐温稳定性:采用氧化铝陶瓷基底,厚膜电阻层(玻璃釉+金属氧化物)与基底结合牢固,高温下阻值漂移远小于碳膜电阻;
  • 成本效益:工艺简化(丝网印刷+烧结),批量成本比薄膜电阻低30%以上,适合大规模量产;
  • 抗浪涌能力:厚膜层的“颗粒状结构”对瞬时脉冲(如电源启动浪涌)的耐受能力优于薄膜电阻,降低电路损坏风险;
  • 阻值覆盖广:同系列可覆盖1Ω~10MΩ阻值,便于电路设计中的参数匹配。

四、典型应用场景

ESR03EZPJ470因性能均衡,广泛应用于以下领域:

  1. 消费电子:智能手机/平板的电源管理(电池充放电限流)、音频模块信号分压、LED指示灯限流;
  2. 工业控制:PLC输入输出接口电阻、传感器信号调理(如温度传感器分压)、小型电机驱动限流;
  3. 通信设备:路由器/交换机偏置电路、无线模块信号匹配、光纤收发器电源滤波辅助;
  4. 汽车电子(辅助电路):车载USB接口过流保护、仪表盘指示灯限流(需确认符合汽车级认证,部分场景可替代)。

五、可靠性与环境适应性

该产品通过多项行业标准测试,可靠性有保障:

  • 抗湿性:符合IEC 60068-2-67湿热测试(85℃/85%RH,1000小时),阻值漂移≤1%;
  • 机械强度:抗振动(10~2000Hz,1.5g加速度)、抗冲击(1000g,0.1ms),适合移动设备或工业振动环境;
  • 长期稳定性:额定条件下工作1000小时,阻值变化≤0.5%,保证设备长期可靠运行。

六、选型与使用注意事项

  1. 功率降额:实际使用建议降额至70%以下(≤175mW),因155℃高温下功率容量仅为额定值的50%,避免过热损坏;
  2. 焊接工艺:禁止手工焊接(易导致封装开裂),需采用回流焊并遵循罗姆推荐曲线(峰值温度240~245℃,时间≤10s);
  3. 存储条件:未开封产品存于15~35℃、湿度≤60%环境,开封后12个月内使用完毕,避免受潮影响焊接性能;
  4. 并联/串联:如需更高功率,可采用相同阻值电阻并联(需保证阻值匹配);如需更高阻值,可串联使用(总功率不超单只额定值)。

该产品凭借“稳定性能+紧凑尺寸+成本优势”,成为电子设计中“基础电阻选型”的经典选项,适用于多数不需要高精度、高功率的通用电路场景。

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.