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BOURNS TC33X-2-302E
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- BOURNS TC33X-2-302E
- Type
- BOURNS
- Unit
- Electronic Component
- Minimum package
- 2500 圆盘
Technical parameters
- Power
- 100mW
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- BOURNS
- Electronic Component
- 1
- Electronic Component
- TC33X-2-302E
- Electronic Component
- 1
- Package
- SMD
- Electronic Component
- Resistor / positions
- Electronic Component
- ±25%
- Electronic Component
- 1g
- Electronic Component
- 3kΩ
- Electronic Component
- 1
- Electronic Component
- BM0257254040
- Electronic Component
- ±250ppm/℃
- 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.
TC33X-2-302E 产品概述
一、产品简介
TC33X-2-302E 为 BOURNS 出品的一款 SMD 可调电阻（trimmer potentiometer），标称阻值 3kΩ（302），公差 ±25%，额定功率 0.1W（100mW），温度系数 ±250 ppm/℃，单圈（1 turn），采用 J‑lead 表面贴装引脚形式。该器件适用于需要板上微调的场合，体积小、便于自动贴装与回流焊接。
二、主要电气参数
- 阻值：3 kΩ（302）
- 精度（初始公差）：±25%
- 额定功率：0.1 W（100 mW）
- 温度系数（TCR）：±250 ppm/℃，适合一般环境温度下的稳定性需求
- 圈数：1（单圈可调）
- 引脚形式：J‑lead，适配 SMD 工艺
三、产品特点
- 紧凑 SMD 封装，兼容自动化贴装与回流焊流程，便于批量生产与装配。
- J‑lead 引脚设计有利于焊接强度与机械支撑，提升装配可靠性。
- 单圈结构简洁，适合快速定位与粗调场合；宽容差（±25%）适用于无需高精度分压或单次粗调的应用。
- 温度系数 ±250 ppm/℃ 表现出在常温范围内的电阻稳定性，适用于多种商用电子设备。
四、典型应用场景
- 电源与信号调节：作为板上微调电阻，用于设定参考电压、偏置电流或增益初始值。
- 工业与消费类产品的校准：在产线或维修阶段进行机器参数微调。
- 通讯与测量设备：用于非关键路径的频率、偏置或灵敏度调整（需注意功耗限制）。
- 教育与开发板：小批量原型调试与功能验证。
五、封装与安装建议
- 遵照 BOURNS 官方数据手册推荐的 PCB 焊盘与丝印尺寸以保证焊接质量与机械强度。
- 推荐使用自动贴装设备配合回流焊；焊接温度与时间请参考生产厂家的回流曲线规范，避免超过材料允许的温度应力。
- 调整时使用合适的微型工具，轻柔施力，避免过大扭矩引起滑丝或内部接触损伤。
- 考虑器件额定功率仅 0.1W，布局时尽量避免长期承受高电流或靠近高温热源。
六、可靠性与环境注意事项
- 对于对温漂和长期稳定性有更高要求的场合，应评估 ±250 ppm/℃ 的温度系数是否满足系统规格；必要时考虑更高精度或更低 TCR 的替代品。
- 器件适合常规工业与消费环境，若用于极端温度、强振动或高湿度环境，请参考厂商的可靠性测试与保管说明，或选用专用高可靠等级产品。
七、选型与替代建议
- 当需要更高精度、更低噪声或更高功率承受能力时，可选择同类系列中精度更高或功率更大的型号，或咨询 BOURNS 官方替代件。
- 采购时确认完整型号 TC33X-2-302E 与包装、卷带方向等，以确保与生产工艺兼容。
总结：TC33X-2-302E 是一款适合板上微调、工艺友好的 SMD trimmer，适用于对精度要求不高但强调装配效率与可调性的应用场景。选型时请结合系统的热、功率与温漂需求，并参照厂商数据手册进行 PCB 布局与焊接工艺确认。
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