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KUU KPTVS28VS1UR
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- KUU KPTVS28VS1UR
- Type
- KUU
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- KUU
- Electronic Component
- KPTVS28VS1UR
- Electronic Component
- 1
- Package
- SOD-123FL
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.041g
- Electronic Component
- 1
- Channel Count
- Electronic Component
- Electronic Component
- BM0264356202
- Operating Temperature
- 55℃~+150℃
- Voltage
- 45.4V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 31.1V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
KPTVS28VS1UR 产品概述
一、主要参数与特性
KPTVS28VS1UR 为单路、单向瞬态电压抑制（TVS）二极管，适用于对直流母线或数据/信号线的浪涌保护。主要电气参数如下：
- 反向截止电压 Vrwm：28 V（反向待机电压，建议用于 ≤24 V 系统或接近28 V的工况）
- 击穿电压 VBR：31.1 V（典型值，在规定测试电流下测得）
- 钳位电压 Vc：45.4 V（在峰值脉冲电流 Ipp 下测得的瞬态钳位）
- 峰值脉冲电流 Ipp：4.4 A
- 峰值脉冲功率 Ppp：200 W（器件瞬态能量吸收能力，注意波形与脉冲宽度对能量计算的影响）
- 反向电流 Ir：1 μA（在 Vrwm 条件下的漏流，温度升高时会增加）
- 极性：单向（定向对地钳位）
- 通道数：单路
- 工作温度：-55 ℃ ~ +150 ℃
- 封装：SOD-123FL，品牌 KUU
二、典型应用场景
- 24 V/28 V 工业电源母线瞬态保护
- 通信端口、工业控制接口和传感器线的浪涌抑制
- 汽车电子辅助电路（作为附加防护层）
- 电源线、直流供电模块、继电器驱动电路的防雷与电磁兼容保护
三、器件优势与工作原理
单向 TVS 在正常情况下表现为高阻态，反向电压低于 Vrwm 时漏电小（Ir≈1 μA），一旦出现过压或浪涌导致电压上升至 VBR 附近，器件快速由高阻转为低阻，钳制电压至约 45.4 V，将能量导入地线，从而保护后端敏感元件。SOD-123FL 封装体积小、易于贴片自动化生产，适合高密度 PCB 布局。
四、设计与布局建议
- 将 TVS 靠近需保护的接口或器件放置，缩短信号/电源线与地之间的走线长度以降低感抗。
- 地线应采用宽铜箔或多层过孔连通，以利散热与能量快速返回。
- 对长期或重复性脉冲，需依据实际波形（10/1000 μs、8/20 μs 等）评估 Ppp 与器件寿命，考虑使用多只并联或更高能量等级的 TVS 作为方案扩展。
- SOD-123FL 支持常规回流焊，建议遵循器件制造商的回流曲线与焊接工艺限制。
五、可靠性与注意事项
- 反向漏流 Ir 随温度上升显著增加，设计需考虑最高工作温度下的功耗与发热。
- 钳位电压为瞬态参数，与脉冲电流大小、上升时间和器件散热条件相关；在选择时按最恶劣脉冲工况验证。
- 不建议用于连续承受高能脉冲或作为限流元件；若预期有多次高能冲击，应评估器件是否需要更换或并联冗余。
- 贮存与使用应防潮、防静电，遵循 SMT 元件常规防护要求。
六、总结
KPTVS28VS1UR 以其 Vrwm=28 V、低漏流、45.4 V 钳位电压和 200 W 瞬态吸收能力，适合为工业和通信领域的 24 V/28 V 级电源与信号线提供快速有效的浪涌保护。在 PCB 布局和热管理上给予合理设计，可发挥其稳定可靠的保护性能。若需在特定脉冲波形和重复冲击条件下使用，请结合实际浪涌规范进一步验证器件长期可靠性。
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