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VISHAY CRCW12064R70FKEAHP
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- VISHAY CRCW12064R70FKEAHP
- Type
- VISHAY
- Minimum package
- 5000 圆盘
Technical parameters
- Power
- 750mW
- Electronic Component
- Electronic Component
- Electronic Component
- VISHAY
- Electronic Component
- CRCW12064R70FKEAHP
- Electronic Component
- 1
- Package
- 1206
- Electronic Component
- SMD Resistor
- Electronic Component
- ±1%
- Electronic Component
- 0.033g
- Electronic Component
- 4.7Ω
- Electronic Component
- 1
- Electronic Component
- BM0227373803
- Operating Temperature
- 55℃~+155℃
- Operating Voltage
- 200V
- 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.
CRCW12064R70FKEAHP 产品概述
一、基本参数
CRCW12064R70FKEAHP 为 VISHAY（威世）出品的厚膜贴片电阻，关键规格如下：阻值 4.7 Ω，标称精度 ±1%，功率 0.75 W（3/4W），工作温度范围 -55 ℃ 至 +155 ℃，温度系数（TCR）±100 ppm/℃，最大工作电压 200 V，封装为 1206（常见贴片封装）。产品描述常见为 “RES SMD 4.7 OHM 1% 3/4W”。
二、主要特性
- 精度与稳定性：±1% 精度适合需要较好阻值一致性的模拟与数字电路。
- 热特性：±100 ppm/℃ 的温度系数在多数商业及工业应用中能保证温度变化时阻值漂移受控。
- 功率与电压能力：0.75 W 的功耗能力配合 200 V 的工作电压，适用于中等功率的分流、限流与负载场合。
- 制程与可靠性：厚膜工艺提供良好的机械强度及温度循环可靠性，适合表面贴装自动化生产。
三、典型应用场景
- 电源与功率管理：作为电源分流、限流或旁路电阻，用于线性或开关电源、功率放大模块。
- 测量与保护：在电流感测、过流检测电路中作为低阻值分流元件（注意精度与热耗）。
- 工业级电子设备：温度与振动要求较高的控制器、驱动器与传感器接口模块。
- LED 驱动与电机控制的辅助电路。
四、热管理与使用建议
- 在高温环境下需注意功率降额（derating）；建议参考 VISHAY 数据手册获得准确降额曲线。
- 布局时应保证良好散热路径，例如避免将电阻完全包围在热源中或紧邻高功耗器件；如必要可通过铜箔加厚或隔热设计降低结温。
- 在高电压应用中确保焊接质量和爬电距离满足系统安全要求。
五、安装与可靠性注意
- 推荐采用标准回流焊工艺，遵循元件和 PCB 的焊接温度规范以避免热应力。
- 存储与操作时避免潮湿与机械冲击；贴片封装便于自动化贴装，但应防止过高的吸湿回流造成阻值漂移或裂纹。
- 在关键应用建议做热循环与湿热测试以验证长期可靠性。
六、选型提示与替代
- 若需更低温漂或更高精度，可考虑低 TCR（例如 ±25 ppm/℃）或 0.1% 精度的产品。
- 对于更高功率需求，可选尺寸更大的封装或专用功率电阻。
- 购买与设计前请以 VISHAY 官方数据手册为准，确认包装、材料代码及具体性能。
七、结语
CRCW12064R70FKEAHP 以其稳定的厚膜工艺、适中的功率和良好的温度特性，适合多种工业与消费类电子的中等功率应用。在实际设计中，应结合热设计与 PCB 布局进行功率降额评估，并参照厂方资料完成最终选型与可靠性验证。
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