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UNI-ROYAL 0603WAF2493T5E
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- UNI-ROYAL 0603WAF2493T5E
- Type
- UNI-ROYAL
- Minimum package
- 5000 圆盘
Technical parameters
- Power
- 100mW
- Electronic Component
- Electronic Component
- Electronic Component
- UNI-ROYAL
- Electronic Component
- 0603WAF2493T5E
- Electronic Component
- 1
- Package
- 0603
- Electronic Component
- SMD Resistor
- Electronic Component
- ±1%
- Electronic Component
- 0.023g
- Electronic Component
- 249kΩ
- Electronic Component
- 1
- Electronic Component
- BM0257341776
- 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.
0603WAF2493T5E 产品概述
一、产品简介
0603WAF2493T5E 是 UNI-ROYAL（厚声）系列的厚膜贴片电阻，封装为 0603（约 1.6 mm × 0.8 mm），阻值 249 kΩ，精度 ±1%，额定功率 100 mW，最大工作电压 75 V，温度系数（TCR）±100 ppm/℃，工作温度范围 -55℃ 至 +155℃。该器件属于通用厚膜电阻，适用于高密度表贴电路中的分压、偏置与滤波场合。
二、主要参数（要点）
- 阻值：249 kΩ ±1%
- 功率额定：100 mW（室温额定值）
- 最大工作电压：75 V
- TCR：±100 ppm/℃（约 0.01%/℃）
- 工作温度：-55℃ ~ +155℃
- 封装：0603（表面贴装）
- 工艺：厚膜（满足一般通用稳定性与成本要求）
三、电气特性与计算说明
- 根据功率与阻值计算的理论电压上限 V = sqrt(P·R) ≈ sqrt(0.1·249000) ≈ 158 V，但器件标称最大工作电压受限为 75 V，因此在实际应用中不得超过 75 V。
- 在 75 V 下的实际消耗功率约为 P = V^2/R ≈ 22.6 mW，低于额定 100 mW，符合安全使用。
- TCR 为 ±100 ppm/℃，即温度每变化 1℃，阻值变化约 0.01%；举例：温差 100℃ 时阻值变化约 1%。
四、温度与稳定性注意事项
- 宽温范围（-55℃ ~ +155℃）适合工业级应用，但在高温环境下应考虑功率降额与寿命影响。
- 初始阻值公差 ±1% 加上温漂在极端温度跨度下可能引起累计偏差（例如 210℃ 全跨度下温漂贡献约 2.1%），设计时应留有余量或采取温度补偿措施。
五、封装与机械特性
- 0603 小尺寸适合高密度 PCB 布局，节省空间。
- 厚膜结构对焊接与机械应力较敏感，焊接时避免过大拉伸或弯折，应保证焊盘与器件之间的良好支撑。
六、贴装与回流焊建议
- 兼容常规无铅回流工艺；推荐遵循 PCB 制造与 SMT 工艺规范进行回流温度曲线控制（避免剧烈温度梯度与过长的高温持时）。
- 建议使用标准 0603 的 land pattern，回流后检查焊点润湿与端点完整性。避免在焊接前后进行强烈超声清洗或机械冲击。
七、典型应用场景
- 各类消费电子与工业控制板的分压、偏置电路；
- 高频信号路径中的阻抗匹配（视具体电路要求）；
- 需要小体积、高密度贴片的测量与传感前端（在满足电压与温漂限制下）。
八、包装与质量保障
- 一般以卷带（Tape & Reel）形式供货，适配自动贴片机；具体包装数量与代码可咨询供应商。
- 建议在采购前索取完整数据表（datasheet）以确认环境降额曲线、可靠性试验与认证信息，并按实际应用进行必要的老化与检验。
如果需要，我可根据您的具体电路环境（工作电压、环境温度、布局空间）帮您做更精确的功率/电压校核与布局建议。
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