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SHIKUES BAV21W
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- SHIKUES BAV21W
- Type
- SHIKUES
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SHIKUES
- Electronic Component
- BAV21W
- Electronic Component
- 1
- Package
- SOD-123
- Electronic Component
- Switch Diode
- Electronic Component
- 0.039g
- Electronic Component
- 1
- Electronic Component
- BM0265569956
- Current
- 200mA
- Diode
- Electronic Component
- Current(Ir)
- 100nA@200V
- (Vf)
- 1.25V@200mA
- Power Dissipation(Pd)
- 250mW
- Electronic Component
- 65℃~+150℃@(Tj)
- 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.
BAV21W 产品概述
一、产品简介
BAV21W 是 SHIKUES（时科）出品的一款独立式开关二极管，封装为 SOD-123，面向空间受限的表贴电路。器件为高速开关/整流用途设计，兼具高耐压与低漏电特性，适合通信、开关电源、保护与信号切换等场合。
二、主要电气参数
- 正向压降 Vf：1.25 V @ IF=200 mA
- 直流反向耐压 Vr：200 V
- 直流整流电流 IF：200 mA（连续）
- 非重复峰值浪涌电流 Ifsm：2.5 A（脉冲）
- 反向电流 Ir：100 nA @ 200 V
- 反向恢复时间 Trr：50 ns（高速切换）
- 耗散功率 Pd：250 mW
- 工作结温范围 Tj：-65 ℃ 至 +150 ℃
这些参数表明 BAV21W 在高压、低漏电与快速切换上具有良好平衡，适合对开关速度和耐压有要求的应用。
三、热特性与功率管理
器件额定耗散功率为 250 mW。按照最大工况计算：200 mA × 1.25 V = 250 mW，已接近器件 Pd 上限，因此在实际设计中应采用降额使用策略——避免长期在 200 mA/高 Vf 条件下连续工作；若必须大电流工作，应在电路板布局上优化散热或使用并联、改选更高功耗器件。保持结温低于额定上限（150 ℃）是确保可靠性的关键。
四、典型应用场景
- 高压信号切换与快速整流
- 开关电源的中低功率整流或钳位电路
- 通信设备的保护与限幅电路
- 测试与测量设备中的高速开关元件
- 便携电子产品的空间受限电路中替代传统整流二极管
五、选型与使用注意事项
- 对连续电流或功率损耗有严格限制的场合，应留有充分的安全裕度或选择更大功率封装。
- 反向耐压为 200 V，适合中高压场合；若存在更高瞬态电压，应加入抑制或限压措施。
- Trr≈50 ns，适合多数高速开关应用；对超高频或严格恢复能量要求的场合需验证开关损耗。
- 焊接与回流工艺应遵循制造商推荐曲线，避免过热导致封装或焊点受损。
- ESD 与浪涌保护仍需在系统层面考虑，尽管 Ifsm 可承受短脉冲浪涌。
六、封装与可靠性
SOD-123 紧凑封装便于表贴组装与自动化生产，适合空间受限电路板。SHIKUES（时科）提供的 BAV21W 在高低温循环、长期反向应力与常见浪涌下表现稳定。设计时建议参考供应商的封装资料与可靠性测试报告，以满足具体的环境与寿命要求。
总结：BAV21W 以其 200 V 耐压、低漏电与 50 ns 的快速恢复特性，在中高压快速开关和保护场合表现出色。但由于 Pd 与额定 IF 在极限条件下接近上限，选型时需注意热管理与降额策略。
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