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UniOhm 0805W8F2490T5E
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Uni Ohm 0805W8F2490T5E
- Type
- UNIOHM
- Minimum package
- 5000 圆盘
Technical parameters
- Power
- 125mW
- Electronic Component
- Electronic Component
- Electronic Component
- UNIOHM
- Electronic Component
- 0805W8F2490T5E
- Electronic Component
- 1
- Package
- 0805
- Electronic Component
- SMD Resistor
- Electronic Component
- ±1%
- Electronic Component
- 0.027g
- Electronic Component
- 249Ω
- Electronic Component
- 10
- Electronic Component
- BM0264678785
- Operating Temperature
- 55℃~+155℃
- Operating Voltage
- 150V
- 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.
0805W8F2490T5E — 0805 片式厚膜电阻 产品概述
一、产品简介
0805W8F2490T5E 为 UniOhm（台湾厚声）出品的 0805 封装片式厚膜电阻。标称阻值 249Ω，精度 ±1%，额定功率 125mW，额定工作电压 150V，温度系数（TCR）±100ppm/℃，工作温度范围 -55℃ 至 +155℃。器件以小型化、成品率高著称，适合表面贴装流程和大批量自动化贴片组装。
二、主要技术参数
- 阻值：249Ω
- 精度：±1%
- 功率：125mW（参考环境温度，需按降额曲线考虑高温工况）
- 最大工作电压：150V
- 温度系数：±100ppm/℃
- 工作温度：-55℃ ~ +155℃
- 封装：0805（2012公制尺寸）
- 基本类型：厚膜电阻（片式）
三、主要特性与优势
- 厚膜工艺成本效益高，适用于大批量应用；
- ±1% 精度满足多数精密分压和阻抗匹配要求；
- ±100ppm/℃ 的温漂表现适合中等稳定性需求的模拟与混合信号电路；
- 宽温工作范围和良好的焊接可靠性，适配工业级环境；
- 0805 尺寸兼顾占板面积与功耗散热，便于自动贴装与回流焊工艺。
四、典型应用场景
- 模拟电路的分压器与偏置网络；
- 滤波与阻抗匹配电路；
- 电源管理与限流保护；
- 通信设备、测量仪器、消费类电子与工业控制模块（如用于汽车电子，请确认零件是否具备相应车规认证）。
五、设计与使用注意事项
- 注意功率降额：在高环境温度下需按厂商给出的降额曲线计算允许功率；
- 电压限制：避免施加超过 150V 的直流或脉冲电压以防击穿或发热异常；
- 焊接工艺：遵循回流温度曲线，避免长时间高温造成电阻偏移；
- 布局建议：若用于较高功耗场合，留意周边铜箔散热和间距，以利热量扩散；
- 清洁与可靠性：波峰/回流焊后建议使用厂家推荐的清洗流程，长期储存避免受潮。
六、采购与替代建议
此类器件常见供货形式为卷带（Tape & Reel），批量采购可向代理商或原厂索取完整数据手册与可靠性测试报告。若需替代，可选用同尺寸、同阻值与精度的 0805 片式电阻，常见替代品牌包括 Yageo、KOA、Vishay 等，但在替换前请核对温漂、额定功率与电压等级以确保性能一致。
若需该型号的详细数据手册、降额曲线或样品支持，请提供用量与交期要求，我可协助准备采购或替代方案。
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