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Jingdao Microelectronics SMF51CA
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Electronic SMF51CA
- Type
- Jingdao Microelectronics
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic
- Electronic Component
- SMF51CA
- Electronic Component
- 1
- Package
- SOD-123FL
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.03g
- Electronic Component
- 1
- Electronic Component
- BM0230630733
- Operating Temperature
- 55℃~+150℃
- Voltage
- 82.4V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 62.7V
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMF51CA TVS 二极管（SOD-123FL）产品概述
一、产品简介
SMF51CA 是晶导微电子推出的一款瞬态电压抑制（TVS）二极管，封装为 SOD-123FL。该器件设计用于吸收浪涌和瞬态脉冲，保护敏感电子电路免受过压损害。主要参数：反向截止电压 Vrwm = 51V，击穿电压 Vbr ≈ 62.7V，钳位电压 Vc ≈ 82.4V（典型值），峰值脉冲电流 Ipp = 2.4A（10/1000μs），峰值脉冲功率 Ppp = 200W（10/1000μs），反向电流 Ir ≈ 1μA，工作温度范围 -55℃ 至 +150℃。
二、主要特性
- 典型工作电压 51V，适合 36V/48V 等中高压直流系统的浪涌保护。
- 钳位电压 82.4V（在规定脉冲条件下），对下游器件提供可靠限压保护。
- 10/1000μs 波形下能量吸收能力高达 200W，适用于工业电源与通信端口的浪涌防护。
- 低漏电流（1μA），对静态功耗影响小。
- 宽工作温度范围，适合恶劣环境使用。
- SOD-123FL 小型低电感封装，利于表面贴装与快速回流焊工艺。
三、典型应用
- 通信设备电源防护（PoE、交换机、电源输入）
- 工业控制、PLC 与传感器接口的浪涌保护
- 电源线路、直流母线保护（36V/48V 系统）
- 充电桩、逆变器中对高能脉冲的缓解
- 其它需抑制雷击或开关瞬变的电子模块
四、封装与热管理建议
SOD-123FL 提供紧凑封装和良好热阻特性，但在大能量吸收场合仍需注意 PCB 散热。建议：
- 在焊盘周围留足铜箔面积以增强散热；
- 对频繁或高能量冲击场合，考虑外部限流电阻或更高能量等级的 TVS 器件；
- 严禁长期在接近 Ppp 的条件下连续工作，应保留能量裕量以延长寿命。
五、选型与使用注意
- 确认系统最大工作电压 ≤ Vrwm；反向截止电压应略高于正常母线电压以避免误触发。
- 钳位电压应低于被保护器件的最高耐压（包括容差和温升）。
- 对于可能出现更大冲击电流的场合，优先选用额定 Ipp/Ppp 更高的型号或并联布置（并联时需考虑电流分配和热均衡）。
- 请根据具体型号确认单向/双向属性与极性标识，正确示意钳位极性并遵循供应商的回流焊曲线。
六、可靠性与测试
SMF51CA 适用工业级温度范围并通过常规瞬态和环境测试（雷击、浪涌、热循环等）。在设计验证阶段建议进行实际系统级浪涌注入测试以验证钳位行为和热稳定性。
总结：SMF51CA 在 51V 工作点附近提供高能量浪涌吸收和可靠的限压保护，封装小巧、便于 SMT 生产，适合中高压直流与工业通信接口的过压防护。欲获取更详细的电气特性曲线、封装尺寸及回流工艺参数，请参考晶导微电子的详细 datasheet。
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