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TWGMC SMF24A TVS Diode SMF24A
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- TWGMC SMF24A
- Type
- TWGMC
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- TWGMC
- Electronic Component
- SMF24A
- 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
- BM0227688417
- Operating Temperature
- 55℃~+150℃
- Voltage
- 38.9V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 29.5V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMF24A 瞬态抑制二极管产品概述
一、产品简介
SMF24A 为单路、单向型瞬态抑制二极管（TVS），由 TWGMC（台湾迪嘉）生产，封装为 SOD-123FL，适用于表面贴装（SMT）工艺。该器件专为抑制脉冲过电压和浪涌能量设计，能在瞬态事件发生时快速钳位，保护下游电路免受损坏。
二、主要电气参数
- 反向工作电压（Vrwm）：24 V
- 击穿电压（Vbr）：29.5 V
- 钳位电压（Vc，Ipp 测试条件 10/1000 μs）：38.9 V
- 峰值脉冲功率（Ppp）：200 W @ 10/1000 μs
- 峰值脉冲电流（Ipp）：5.1 A
- 反向漏电流（Ir）：1 μA（常温、Vrwm 条件）
- 通道数：单路；极性：单向
- 工作温度范围：-55 ℃ ～ +150 ℃
三、工作特性与性能说明
SMF24A 在系统遭受雷击、电源浪涌或开关瞬变时能迅速由高阻态转为低阻态，将瞬时过电压钳制在约 38.9 V（在标准 10/1000 μs 测试脉冲下）。其击穿电压约 29.5 V，确保在超过反向工作电压时迅速导通。200 W 的脉冲功率能力和 5.1 A 的峰值电流能力，适合吸收中等能量的瞬态脉冲。低至 1 μA 的反向漏电流有利于精密电源与信号线的长期稳定性。
四、典型应用
- 电源输入口和稳压电路的过压保护
- 通信接口与信号线路（如 RS-232/RS-485、CAN 总线）防浪涌保护
- 汽车电子、车载模块的瞬态防护（需遵循车规级设计准则）
- 工业控制、楼宇自动化设备的浪涌抑制
- 消费类电子（充电器、适配器、外接接口）保护
五、封装与使用建议
SOD-123FL 小巧的封装便于高密度 PCB 布局；建议将器件尽量靠近受保护的接口或连接器放置，以减小寄生电感与回路面积。贴装时遵循无铅回流曲线，避免长时间过高温度影响可靠性。对于高能量或重复脉冲场景，可考虑并联使用或选用更高功率等级器件，并在布局中加入串联电阻或滤波元件分担能量。
六、选型与可靠性注意事项
- 确认系统最大正常工作电压不得超过 Vrwm（24 V），以免常态下出现不必要的导通。
- 在连续、多次脉冲环境下，应根据能量预算选择合适的安全系数，避免单次器件承受超出其 Ppp 的累积能量。
- 注意器件钳位电压（38.9 V）对下游元件的耐压能力要求，必要时增加串联阻抗或吸收网络。
- 工作环境温度、焊接应力及长期老化均会影响性能，建议按厂方数据手册进行可靠性核算。
SMF24A 以其高能量吸收能力、低漏电与宽温度范围，适合各类需要中等能量瞬态抑制的保护方案，是接口与电源防护的可靠选择。若需更详细的波形参数与封装机械图，请参考 TWGMC 官方规格书。
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