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TWGMC SMF14CA Bidirectional TVS Diode SMF14CA
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- TWGMC SMF14CA
- Type
- TWGMC
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- TWGMC
- Electronic Component
- SMF14CA
- Electronic Component
- 1
- Package
- SOD-123FL
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.048g
- Electronic Component
- 1
- Channel Count
- Electronic Component
- Electronic Component
- BM0226538425
- Operating Temperature
- 55℃~+150℃
- Voltage
- 23.2V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 17.2V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMF14CA 产品概述
一、产品简介
SMF14CA 为单路双向瞬态电压抑制（TVS）二极管，采用 SOD-123FL 小尺寸封装，由 TWGMC（台湾迪嘉）生产。器件专为抑制雷击、浪涌和静电放电等瞬态过电压事件设计，适用于空间受限的电源与信号线保护场合，尤其适合 12V 类工作电压系统的过压防护。
二、主要电气参数
- 钳位电压（Vc）：23.2 V（典型，10/1000 µs 波形下）
- 工作反向电压 Vrwm：14 V
- 击穿电压 Vbr（或 Vz）：17.2 V
- 峰值脉冲功率 Ppp：200 W（10/1000 µs）
- 峰值脉冲电流 Ipp：8.6 A（10/1000 µs）
- 反向漏电流 Ir：1 µA（在 Vrwm 条件下）
- 通道数：单路，极性：双向
- 工作温度范围：-55 ℃ ～ +150 ℃
三、主要特性
- 双向结构，可直接连接于交流或双向信号线，用于正反向瞬态抑制。
- 高能量吸收能力（200 W @10/1000 µs），对大幅度浪涌有良好保护效果。
- 低反向漏电（1 µA），不影响正常工作电流和精密电路的静态特性。
- SOD-123FL 小型低高度封装，便于高密度混合信号与电源板设计。
四、典型应用场景
- 车载与工业 12V/24V 辅助电路的瞬态保护（注意系统要求是否需汽车级认证）。
- 通信设备、基站电源输入口、接口防护（如 RS-485、CAN、模拟线路）以及外围电源和适配器。
- 消费性电子、监控设备和仪器仪表的输入浪涌与静电放电保护。
五、设计与布局建议
- 器件应尽量靠近待保护的连接器或电源入口安装，减小导线与走线寄生电感。
- 在高能量事件场合，建议与熔断器、限流电阻或气体放电管等配合使用，形成多级保护方案。
- 对于高频或敏感信号线，考虑串联阻抗或共模滤波器以降低瞬态的耦合到其他回路。
- 焊接建议按照 SOD-123FL 标准回流工艺进行，注意焊盘散热设计以利于热量释放与可靠性提升。
六、可靠性与使用注意
- 工作温度范围宽（-55～+150 ℃），适合多种严苛环境，但在极端高温或长期高能量冲击下需评估寿命衰减。
- 在选型时确保 Vrwm 高于系统正常工作电压，并留合适裕量以避免误触发。
- 若用于安全或汽车关键应用，应确认器件是否满足相应行业认证要求（如 AEC-Q101、ISO 等）。
七、封装与订购信息
- 封装：SOD-123FL（小型表面贴装）
- 品牌：TWGMC（台湾迪嘉）
- 建议关注供货包装形式（卷盘/散装）与最小订购数量，便于装配与产线管理。
总结：SMF14CA 在小体积封装下提供可靠的双向瞬态抑制能力，适合 14V 左右系统的防护需求。合理的电路布局与多级保护配合，可显著提升系统对雷击、浪涌和 ESD 的抗扰能力。若需更详细的电气特性曲线（如 V-I 曲线、能量耗散测试条件）或封装尺寸图，请提供要求以便补充技术资料。
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