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JSMSEMI SMF54A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- JSMSEMI SMF54A
- Type
- JSMSEMI
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- JSMSEMI
- Electronic Component
- SMF54A
- Electronic Component
- 1
- Package
- SOD-123W
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.031g
- Electronic Component
- 1
- Electronic Component
- BM0264819489
- Operating Temperature
- 55℃~+150℃
- Voltage
- 87.1V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 60V
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMF54A 产品概述
一、产品简介
SMF54A 是 JSMSEMI（杰盛微）推出的一款单向瞬态抑制二极管（TVS），专为表面贴装（SMD）应用设计，封装为 SOD-123W。该器件体积小、易于 PCB 布局，适合用于保护电源线、通信接口及其他易受瞬态过电压冲击的线路。
二、主要电气参数
- 极性：单向
- 反向工作电压 Vrwm：54 V（正常工作电压）
- 击穿电压 VBR：60 V（典型）
- 钳位电压（Ipp 条件下）：87.1 V
- 峰值脉冲电流 Ipp：2.3 A（10/1000 µs 波形）
- 峰值脉冲功率 Ppp：200 W @ 10/1000 µs
- 反向漏电流 Ir：1 µA（典型）
- 工作温度范围：-55 ℃ ～ +150 ℃
这些参数表明 SMF54A 在 48 V 级别电源及类似中/高压总线上，能提供较好的过压吸收和能量承受能力。
三、典型应用场景
- 48 V 供电系统（如通信、POE 等）及工业电源总线的瞬态保护
- 通信接口、数据线和控制线的雷击/开关瞬态抑制
- 电源输入端、DC-DC 转换器输出端的浪涌保护
- 对体积与板面空间有严格要求的消费类或工业类电子设备
四、封装与安装建议
SMF54A 采用 SOD-123W 封装，适合自动贴装与回流焊工艺。建议：
- 参考 SOD-123W 标准焊盘尺寸并保证良好的接地或电源线宽度以利散热。
- 按照锡膏供应商及回流炉曲线选择合适温度曲线，避免过热影响可靠性。
- 对于高能量脉冲场景，可在 PCB 上增加散热铜箔并优化走线以降低温升。
五、使用注意事项与可靠性提示
- SMF54A 为单向 TVS，适用于系统参考地明确定义的场合；若需要在无极性或交流线上使用，应选双向 TVS。
- 峰值参数（Ipp、Ppp）通常基于单次 10/1000 µs 冲击，连续或重复冲击会累积损伤器件，应按系统实际冲击频率进行能量评估与整合保护方案（如串联金属氧化物压敏电阻或熔断器）。
- 工作温度范围广，但长期靠近上限温度会降低寿命，应考虑散热与保护电路的环境条件。
- 在设计时预留测试点以便现场验证钳位电压与漏电等关键指标。
六、选型建议
当系统工作电压接近或高于 48 V，且需单向浪涌保护（参考地已定义）时，SMF54A 是一种体积小、能量处理能力适中的选择。若系统可能遭受更高能量的浪涌或需双向保护，请考虑更高功率等级或双向型号。
总结：SMF54A 提供 54 V 等级的单向瞬态保护，SOD-123W 小封装适合空间受限的表面贴装应用，具有良好的钳位性能与 200 W/10/1000 µs 的能量承受能力，是许多工业与通信电源防护场合的可靠选型。
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