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Littelfuse P4SMA16CA
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Littelfuse P4SMA16CA
- Type
- LITTELFUSE
- Minimum package
- 5000
Technical parameters
- Electronic Component
- LITTELFUSE
- Electronic Component
- P4SMA16CA
- Electronic Component
- 1
- Package
- DO-214AC
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.12g
- Electronic Component
- 1
- Electronic Component
- BM0226971655
- Operating Temperature
- 65℃~+150℃
- Voltage
- 22.5V
- Electronic Component
- IEC 61000-4-4；IEC 61000-4-2
- Current(Ir)
- 1uA
- Voltage(VBR)
- 15.2V
- Electronic Component
- 5000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
P4SMA16CA（Littelfuse）产品概述
一、产品简介
P4SMA16CA 是 Littelfuse（美国力特）推出的一款双向瞬态电压抑制二极管（TVS），封装为 DO-214AC（SMA），两脚设计，专为抑制电磁干扰、静电放电和电源瞬态浪涌而设计。该器件在13.6V反向工作电压下提供可靠的浪涌保护，适用于工业、通信和汽车级电子系统。
二、关键电气参数
- 钳位电压（Vc）：22.5 V（在指定冲击条件下）
- 反向工作电压（Vrwm）：13.6 V
- 击穿电压（Vbr）：15.2 V
- 峰值脉冲功率（Ppp）：400 W
- 峰值脉冲电流（Ipp）：18.2 A
- 反向静态漏电流（Ir）：1 µA（常温下）
- 极性：双向（Bi-directional）
- 工作温度范围：-65 ℃ 至 +150 ℃
- 防护等级/标准：满足 IEC 61000-4-4（EFT）与 IEC 61000-4-2（ESD）相关测试要求
三、主要特性与优势
- 双向保护：对正负极性瞬态脉冲均可钳位，适合交流信号线或可能出现反向瞬态的应用。
- 高脉冲能量吸收能力：400W 峰值脉冲功率配合 18.2A 峰值电流，可应对典型的雷击诱发及电源浪涌事件。
- 宽温度范围与低漏电流：-65~+150 ℃ 的耐温能力与 1 µA 的低泄漏，有利于高可靠性与低功耗系统使用。
- 标准化封装（SMA）：DO-214AC 方便表贴安装，便于量产与自动化焊接。
四、典型应用场景
- 通信接口保护（例如以太网/串口接口）
- 工业控制与电源输入防护（继电器驱动、传感器接口等）
- 汽车电子及车载低压系统的瞬态抑制（需根据车规认证进一步确认）
- 消费类设备的外部端口（USB、HDMI 等）与电源线路防护
五、选型与应用建议
- 确认系统工作电压：Vrwm（13.6V）应高于系统正常工作电压以避免频繁触发。
- 余量设计：根据可能出现的最大浪涌能量选择合适的 TVS 数量或并联/串联方案以提高可靠性。
- 热管理与PCB 布局：提供足够的焊盘铜面积与热散路径，避免长时间多次冲击导致发热积累。
- 双向器件无需考虑极性方向，但在电路中仍需注意与其他保护元件（熔断器、慢熔电阻等）的配合。
六、封装与可靠性提示
- DO-214AC（SMA）封装适合波峰/回流焊工艺，但应遵循厂商推荐的焊接曲线以防封装热损伤。
- 长期重复高能冲击会降低器件寿命，关键应用建议进行实地试验验证并留有安全裕度。
七、结论
P4SMA16CA（Littelfuse）以其 13.6V 反向工作电压、22.5V 钳位能力与 400W 峰值脉冲功率，提供了针对工业与通信接口的高效瞬态保护解决方案。其双向特性与宽温工作范围使之在多种严苛环境下表现稳定，是需要抗ESD、EFT及浪涌防护应用的可靠选择。若需进一步与系统匹配，请参考完整 Datasheet 并结合实际浪涌波形与能量评估。
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