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UniOhm 0603WAF2802T5E Resistor 0603WAF2802T5E
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Uni Ohm 0603WAF2802T5E
- Type
- UNIOHM
- Minimum package
- 5000 圆盘
Technical parameters
- Power
- 100mW
- Electronic Component
- Electronic Component
- Electronic Component
- UNIOHM
- Electronic Component
- 0603WAF2802T5E
- Electronic Component
- 1
- Package
- 0603
- Electronic Component
- SMD Resistor
- Electronic Component
- ±1%
- Electronic Component
- 0.023g
- Electronic Component
- 28kΩ
- Electronic Component
- 10
- Electronic Component
- BM0257266750
- 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.
0603WAF2802T5E 产品概述
一、简介
0603WAF2802T5E 是 UniOhm（台湾厚声）出品的一款高稳定性厚膜片式电阻，标准封装为 0603（1608 公制），阻值 28 kΩ，公差 ±1%，额定功率 100 mW，适用于对体积、成本和批量贴装都有要求的消费电子与工业类电路。该器件具有良好的温度特性和宽温工作范围，适合在多种常见环境下长期使用。
二、主要性能参数
- 阻值：28 kΩ（2802）
- 精度：±1%（满足 E24/E96 等精度需求）
- 额定功率：0.10 W（100 mW）
- 最大工作电压（厂商标称）：75 V
- 温度系数（TCR）：±100 ppm/℃
- 工作温度范围：-55 ℃ ~ +155 ℃
- 封装：0603（1.6 mm × 0.8 mm），适合自动贴片工艺
- 品牌：UniOhm（台湾 厚声）
三、电气与热学说明
- 热功耗与电压关系：在阻值 R 和额定功率 P 下，理论上连续不超过额定功率时的最大安全电压约为 V = sqrt(P × R)。对于本型号，V ≈ sqrt(0.1 W × 28 000 Ω) ≈ 53 V。也就是说，如果电阻持续承受功率接近 100 mW，则施加电压应控制在约 53 V 以下。厂商标称最大工作电压 75 V 时，通常指在特定短时或环境条件下允许的最高值，实际应用请以不超过理论功率限值为准并参照厂方数据手册。
- 温度漂移：TCR ±100 ppm/℃ 表明随温度变化阻值变化较小，适用于对温漂有一定要求但不是超高精度场合的电路设计。
四、封装与工艺适配
- 封装为标准 0603，尺寸小、适合高密度布板，兼容常规回流焊与自动贴片机工艺。
- 在回流焊过程中建议遵循 PCB 与元件制造商的常规温度曲线，避免过度热冲击与长时间高温暴露，以保证长期可靠性。
五、典型应用场景
- 分压、上拉/下拉电阻、偏置电阻及一般信号链路中阻值需求较高的场合；
- 消费电子（移动设备、便携仪表）、工业控制、通信设备以及其他对封装尺寸和批量生产有要求的应用；
- 不建议用于需承受长期大功率耗散或高脉冲能量的环境（除非在电路中采取限流、降额等保护措施）。
六、选型与使用建议
- 若电路中电阻将长期承受较高电压或接近额定功率，应按热降额原则选择更高功率等级或更低阻值分担能量，避免长期在额定功率附近工作。
- 关注环境温度对功耗的影响，高环境温度会降低可允许的散热能力，应适当降额使用。
- 对温漂或精度有更高要求的场合，可考虑金属膜或更低 TCR 的电阻类型。
- 存储与贴装时避免潮湿和强机械应力，按照 SMT 元件常规良好实践处理。
如果需要，我可以帮您生成该型号的典型最大允许电压与功耗计算示例、回流焊参考曲线建议（基于通用 SMT 标准）或与其他封装/阻值选型对比建议。
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