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ST 1SS355 diode 1SS355
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ST 1SS355
- Type
- ST
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ST
- Electronic Component
- 1SS355
- Electronic Component
- 1
- Package
- SOD-323
- Electronic Component
- Switch Diode
- Electronic Component
- 0.223g
- Electronic Component
- 1
- Electronic Component
- BM0230898843
- Current
- 100mA
- Diode
- Electronic Component
- Current(Ir)
- 100nA@80V
- (Vf)
- 1.2V@100mA
- Power Dissipation(Pd)
- 200mW
- Electronic Component
- 55℃~+150℃
- 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.
1SS355 开关二极管（SOD-323）产品概述
一、主要参数概览
- 型号：1SS355（开关二极管）
- 品牌：ST（先科）
- 封装：SOD-323（独立式）
- 正向压降：Vf = 1.2 V @ If = 100 mA
- 直流反向耐压：Vr = 80 V
- 最大整流电流：If = 100 mA（连续）
- 非重复峰值浪涌电流：Ifsm = 500 mA
- 功率耗散：Pd = 200 mW
- 反向电流：Ir = 100 nA @ 80 V
- 反向恢复时间：Trr = 4 ns
- 工作结温范围：Tj = -55 ℃ ~ +150 ℃
二、核心特性与性能亮点
1SS355 属于高频开关二极管，结合低反向漏电和快速恢复（Trr ≈ 4 ns），适合用于开关、混合信号和高频脉冲场合。SOD-323 小封装体积小、引脚间距短，便于高密度 PCB 布局。80 V 的反向耐压与极低的反向电流（100 nA@80 V）使其在中低电压域具有良好抗漏电性能；正向压降在 100 mA 下约 1.2 V，适合小功率信号处理与保护用途。
三、典型应用场景
- 高频开关与脉冲电路（脉冲整形、开关管驱动）
- 信号整流与波形夹位、限幅器与钳位电路
- 输入保护与反相保护（低功耗电子设备）
- 电信与射频前端的开关/切换阵列（非高功率输出）
- 便携式消费电子、传感器接口与混合信号板级保护
四、设计与使用注意事项
- 连续工作电流建议不超过 100 mA，且考虑温度升高时按 Pd 进行降额；Pd = 200 mW 通常在参考环境温度下给定，实际系统需留足热裕量。
- 反向电压使用时应留安全裕量，建议工作反向电压远低于 80 V（例如 ≤ 60 V）以降低漏电与击穿风险。
- 峰值浪涌（Ifsm = 500 mA）为短时能力，不能作为长期连续载流值。浪涌脉冲宽度和封装热容影响允许值，实际电路应通过仿真或测量验证。
- 对于高频切换，Trr = 4 ns 指示良好快速恢复性能，适用于数 MHz 至数十 MHz 的信号处理；高频下关注寄生电容与布局走线以减少损耗与反射。
五、封装与焊接建议
SOD-323 属于小外形封装，建议采用标准回流焊工艺（遵循元件制造商的回流温度曲线）。焊盘设计应保证足够的焊盘面积与热量均衡，焊接后避免长时间高温回流。装配时注意静电防护与潮湿敏感等级（若批次有标注），在潮湿敏感器件上按规范回流前进行烘烤处理。
六、测试与选型参考
在验收与设计验证中，应测量正向压降（Vf@100 mA）、反向漏电（Ir@Vr）、反向恢复时间（Trr）与最大功耗下的结温上升。若需要更高电流或更低 Vf，可考虑替代型号；若需要更高重复峰值或更低 Trr，则选择专用快速恢复或肖特基二极管。总体上，1SS355 在小功率、高速开关与信号处理领域提供了体积小、速度快、漏电低的平衡方案。
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