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DIOTEC BY254
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DIOTEC BY254
- Type
- DIOTEC
- Minimum package
- 1700 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DIOTEC
- Electronic Component
- BY254
- Electronic Component
- 1
- Package
- DO-201
- Electronic Component
- General Purpose Diode
- Electronic Component
- 0.99g
- Electronic Component
- 1
- Electronic Component
- BM0227743803
- Current
- 3A
- Diode
- 1
- Current(Ir)
- 5uA@800V
- (Vf)
- 1.1V@3A
- Electronic Component
- 50℃~+150℃
- Electronic Component
- Electronic Component
- Electronic Component
- 1700
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BY254 产品概述
一、产品简介
BY254 是一款高压开关整流二极管，由品牌 DIOTEC(德欧泰克) 生产，采用 DO-201 轴向封装。器件额定直流正向电流为 3A，直流反向耐压 Vr 达 800V，设计用于高压整流与开关电源中的快速开关和高压整流场合。器件耐受非重复峰值浪涌电流 Ifsm 可达 110A，工作结温范围宽 (-50℃ ~ +150℃)，适应严苛工作环境。
二、主要电气参数
- 正向压降 (Vf)：1.1V @ 3A（典型值）
- 直流反向耐压 (Vr)：800V
- 连续整流电流：3A
- 非重复峰值浪涌电流 (Ifsm)：110A
- 工作结温：-50℃ ～ +150℃
- 封装：DO-201，2 引脚轴向封装
三、特性与优势
- 高耐压：800V 的反向耐压使其适合高压整流、HV 开关电源及线性保护电路。
- 耐冲击能力强：110A 的峰值浪涌电流允许器件在启动或故障时承受瞬态冲击。
- 宽温度范围：-50℃ 到 +150℃，适用于工业级和宽温应用。
- 封装可靠：DO-201 轴向封装便于穿孔安装和更换，机械强度高，焊接可靠。
四、典型应用场景
- 开关电源（SMPS）高压整流与续流回路
- 电机驱动与电源保护电路
- 电池充电器、高压整流桥
- 工业电源、照明电源与电视/显示器的高压部分
- 防护和抑制瞬态过电压的钳位电路
五、热管理与封装注意
- 在 3A 连续工作下，按 Vf=1.1V 估算整流损耗约为 3.3W，需关注散热路径与周围环境温度。
- DO-201 为轴向封装，通常通过线路板固定或夹具散热，必要时配合散热器或改善通风以降低结温。
- 焊接时遵循制造商的温度-时间曲线，避免长时间高温使封装和密封材质老化。
六、选型与使用建议
- 若电路有频繁大幅度电流冲击，应根据 Ifsm 余量选择或增加浪涌抑制元件。
- 若工作于高频开关环境，注意反向恢复特性对 EMI 的影响，如需更低噪声可选超快恢复或肖特基替代器件（按电压等级匹配）。
- 留出足够的安全余量进行电压、温度和电流的考量，建议在设计中对 Vr 与 Ifsm 进行适当的降额使用以提高可靠性。
七、替代与配套元件
- 在需要更低正向压降或更快恢复的场合，可比较高压肖特基或超快恢复二极管；在电流需求更高时考虑并联或选用额定电流更大的封装。
- 配套使用的抑制元件包括 TVS、RC 缓冲电路、熔断器与限流器件，以提高系统抗冲击能力。
BY254 以其高压耐受、良好浪涌能力和宽温适应性，适合工业级高压整流和开关电源应用。在使用时注意热设计与电气降额，可以获得长期稳定的工作性能。
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