WMSIC Electronic Components

JUXING SF58G

ModelSF58G
PackageDO-27
BrandJUXING
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
JUXING SF58G
Type
JUXING
Minimum package
1250 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
JUXING
Electronic Component
SF58G
Electronic Component
1
Package
DO-27
Electronic Component
Fast Recovery / High-Efficiency Diode
Electronic Component
1.14g
Electronic Component
1
Electronic Component
BM0265601770
Current
5A
Current(Ir)
5uA@650V
(Vf)
1.65V@5A
Electronic Component
55℃~+150℃
Electronic Component
Electronic Component
Electronic Component
1250
Voltage Rating(Vr)
650V

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

SF58G快恢复/高效率二极管产品概述

SF58G是钜兴(JUXING) 推出的一款中功率快恢复/高效率二极管,针对高频开关电源、逆变器等需要高效整流、低损耗的应用场景优化设计,兼具高速开关特性与可靠的电气性能,适合工业控制、新能源等领域的中等功率电路需求。

一、产品核心定位与应用场景

SF58G定位于中等功率高频整流/续流应用,核心解决“高频下低损耗”与“可靠耐压”的平衡问题:

  • 快恢复特性(反向恢复时间35ns)适配100kHz以内的高频电路;
  • 5A平均整流电流覆盖多数220V/380V电源的中等功率段;
  • 650V反向耐压满足电网侧及二次侧的电压裕量需求。

典型应用聚焦于:开关电源二次侧整流、光伏逆变器续流、电机驱动回路、UPS电源模块等。

二、关键电气参数解析

SF58G的电气参数围绕“高效、可靠、高速”三大核心设计,关键指标如下:

1. 正向导通特性

在额定平均电流5A下,正向压降仅1.65V——这一数值在快恢复二极管中属于低损耗水平,相比同类产品可降低约10%~15%的导通功率损耗(导通损耗=I×Vf),直接提升整机效率。

2. 反向耐压与漏电流

  • 直流反向耐压650V:满足220V市电(峰值311V)及380V工业电(峰值537V)的反向电压需求,留足30%以上的电压裕量,避免过压击穿;
  • 反向漏电流5μA@650V:反向截止状态下漏电流极小,长期工作时发热少、稳定性高,尤其适合持续高电压工况。

3. 高速开关特性

反向恢复时间Trr=35ns:快恢复二极管的核心指标,直接影响高频电路的开关损耗——35ns的恢复时间可将高频下的开关损耗降低30%以上,适配100kHz以内的开关频率(如LLC谐振电源)。

4. 浪涌与过流能力

非重复峰值浪涌电流Ifsm=150A:可承受开机瞬间、负载突变等场景的大电流冲击(持续时间≤10ms),有效避免浪涌导致的器件损坏,提升电路可靠性。

三、物理特性与封装优势

SF58G采用DO-27插件封装,具备以下优势:

  • 散热性能优异:DO-27封装的陶瓷/塑料外壳+金属引脚设计,可快速将结热带出,适配工作结温**-55℃~+150℃**的宽温范围;
  • 安装便捷:插件式设计适合手工焊接、波峰焊或回流焊(需适配工艺),引脚间距符合行业标准,便于电路布局;
  • 机械强度高:封装外壳耐冲击、抗振动,适合工业环境下的长期使用。

四、可靠性与环境适应性

SF58G的可靠性设计覆盖全工况:

  • 宽温范围:工作结温从-55℃(低温启动)到+150℃(高温满载),可在车载、户外光伏等极端温度场景稳定工作;
  • 低损耗稳定:正向压降与反向漏电流随温度变化小,避免高温下损耗剧增导致的器件失效;
  • 抗浪涌能力:150A的峰值浪涌电流满足IEC/EN等标准的浪涌测试要求,降低电路防护成本。

五、典型应用示例

  1. 开关电源二次侧整流:适配100W~500W的LLC谐振电源,低损耗特性提升电源效率至90%以上;
  2. 光伏逆变器续流:在MPPT控制器或逆变桥的续流回路中,快恢复特性减少反向恢复损耗,提升发电效率;
  3. 电机驱动续流:用于BLDC电机驱动的续流二极管,35ns恢复时间可降低开关噪声与损耗;
  4. UPS电源模块:在UPS的整流/逆变回路中,650V耐压与5A电流满足中等功率UPS的需求。

总结

SF58G作为一款性能均衡的快恢复二极管,以低导通损耗、高速开关、宽温可靠为核心优势,覆盖中等功率高频电路的主流应用场景。JUXING的工业级品质保障,使其成为开关电源、新能源、工业控制等领域的高性价比选择。

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