WMSIC Electronic Components

DIOTEC US1M

ModelUS1M
PackageSMA
BrandDIOTEC
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
DIOTEC US1M
Type
DIOTEC
Minimum package
7500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DIOTEC
Electronic Component
US1M
Electronic Component
1
Package
SMA
Electronic Component
Fast Recovery / High-Efficiency Diode
Electronic Component
0.098g
Electronic Component
1
Electronic Component
BM0228562172
Current
1A
Current(Ir)
5uA@1000V
(Vf)
1.7V@1A
Electronic Component
50℃~+150℃
Electronic Component
Electronic Component
Electronic Component
7500
Voltage Rating(Vr)
1kV

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

US1M(DIOTEC 德欧泰克)产品概述

US1M 为 DIOTEC(德欧泰克)系列 Ultrafast 整流器,采用 SMA(DO‑214AC)封装,面向高电压、高频开关应用,兼顾体积与性能。该器件在直流反向耐压、浪涌能力与宽工作结温范围方面具有良好表现,适用于各种工业电源与保护电路。

一、主要特点

  • Ultrafast 快速恢复整流器,开关损耗与反向恢复相关干扰明显低于普通恢复二极管,适合高频开关情形。
  • 封装:SMA(即 DO‑214AC 紧凑型功率封装),便于自动贴装与回流工艺。
  • 品牌:DIOTEC(德欧泰克),供应链稳定,适用于量产与工程样机。
  • 小体积、高电压、可承受瞬态浪涌,适合高压直流整流与防反接场合。

二、关键参数

  • 直流反向耐压 Vr (VRRM):1000 V(1 kV)
  • 连续整流电流 IF(AV):1 A(在规定散热条件及额定温度下)
  • 非重复峰值浪涌电流 Ifsm:30 A(半正弦波,通常 8.3 ms),用于短时启动或故障场合的浪涌承受能力说明
  • 工作结温范围:-50 ℃ ~ +150 ℃(适应宽温区工业环境)
  • 封装:SMA(DO‑214AC),适合波峰/回流焊接与手工焊接
    注:正向压降(Vf)、反向恢复时间(trr)等详细动态特性请参见厂方数据手册,以便进行精确热设计与损耗计算。

三、典型应用场景

  • 高压开关电源(HV SMPS)中的整流与续流二极管
  • 二极管桥(高压整流)或半波整流电路
  • 逆变器和电机驱动的续流/钳位二极管
  • 电池充电器、太阳能逆变器与工业电源的浪涌保护
  • 需要在较高电压下兼顾开关损耗和反向恢复性能的场合

四、热管理与封装注意

  • SMA 为塑料功率封装,散热依赖 PCB 铜箔面积与焊点散热能力。连续 1 A 工作时,器件的结‑到‑环境温升受 PCB 铜面积和周围空气流动影响明显。
  • 在高环境温度或密集布板环境下,应对器件进行适当降额或增大散热铜箔面积(在焊盘周围添加热沉铜),必要时在焊盘下方并联导热过孔以提高散热效率。
  • 设计时按照 Pd = IF × Vf 估算器件功耗,再结合热阻(θJA)进行结温预测;若需要精确值,请参考原厂热阻与 Vf 曲线。

五、设计与布局建议

  • 对于开关型应用,尽量将整流二极管靠近功率器件放置,缩短回流环路以降低寄生电感与 EMI。
  • 对于高 dv/dt 或高 di/dt 场合,考虑在二极管两端并联 RC 抑制网络或采用合适的缓冲元件,减少峰值应力。
  • 若电路中存在反复短路或大幅浪涌,应评估器件的热冲击与寿命,并在 PCB 上留有熔断或保护元件位置(保险丝、NTC、TVS)以防止灾难性失效。
  • 使用自动贴片与回流焊时,遵守封装的温度曲线与峰值温度要求,避免超温造成封装损伤。

六、可靠性与焊接

  • 器件工作结温可达 +150 ℃,适合工业级温区。长期可靠性与漂移需参照器件寿命加速试验数据。
  • SMA 支持常见的回流焊工艺,但建议按照厂方推荐的回流曲线进行,以保障焊接可靠性与长期性能。
  • 存储与搬运时注意防潮包装与静电防护,必要时按厂方说明进行回潮处理。

七、选型对比与替代方案

  • 与普通恢复二极管比较:US1M 的反向恢复性能更佳,开关损耗与 EMI 较低,适合高频场合。
  • 与肖特基二极管比较:肖特基具有更低正向压降和更快响应,但高压(1 kV)肖特基器件稀少且成本高;在 1 kV 等级下,Ultrafast 整流器往往是更平衡的选择。
  • 若需要更大连续电流或更低热阻,可考虑同类封装下额定更高的型号或转用 DO‑214AA/DO‑41 等更大封装。

八、采购与资料建议

  • 推荐在设计与量产前获取 DIOTEC 的最新数据手册(Datasheet)与封装图纸(Package Drawing),以确认 Vf‑If 曲线、trr、θJA、回流温度和焊盘建议。
  • 取样与小批测试时,关注器件在实际 PCB 布局与工作温度下的结温与性能表现,必要时进行温升测试与寿命验证。
  • 订货时确认是否需要符合 RoHS / REACH 要求的版本,以及具体的包装方式(带卷、托盘等)。

总结:US1M(DIOTEC)是一款适用于高电压与高频开关场合的 Ultrafast 整流器,1 kV 耐压与 30 A 浪涌能力使其在工业电源与保护电路中具备良好适用性。设计时应重视热管理、PCB 布局与回路寄生参数,以发挥其性能优势。若需进一步详细参数或应用示意,请提供具体电路工况或索取厂方 datasheet。

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