WMSIC Electronic Components

CJ SP1045L

ModelSP1045L
PackageTO-277
BrandCJ
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
CJ SP1045L
Type
CJ
Minimum package
5000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJ
Electronic Component
SP1045L
Electronic Component
1
Package
TO-277
Electronic Component
Schottky Diode
Electronic Component
0.131g
Electronic Component
1
Electronic Component
BM0227596490
Current
10A
Diode
Electronic Component
Current(Ir)
230uA@45V
(Vf)
420mV@10A
Electronic Component
55℃~+150℃
Electronic Component
Electronic Component
Electronic Component
5000

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

SP1045L 产品概述

一、产品简介

SP1045L 是江苏长电/长晶(CJ)推出的一款独立式肖特基整流二极管,封装为 TO-277,面向高电流、低压降的整流与续流场合。该器件在 10A 工作电流条件下具有极低的正向压降(Vf = 420 mV@10A),同时具有 45V 的直流反向耐压能力和较高的浪涌承受能力,适用于对效率和热管理有一定要求的电源系统与功率模块设计。

二、主要电气参数

  • 二极管类型:肖特基二极管(独立式)
  • 品牌:CJ(江苏长电/长晶)
  • 型号:SP1045L
  • 封装:TO-277(单只独立封装)
  • 正向压降:Vf = 420 mV @ IF = 10 A
  • 额定整流电流(直流):IF(AV) = 10 A
  • 直流反向耐压:VR = 45 V
  • 反向漏电流:IR = 230 μA @ VR = 45 V
  • 非重复峰值浪涌电流:Ifsm = 280 A
  • 工作结温范围:Tj = -55 ℃ ~ +150 ℃

三、产品特点与优势

  • 低正向压降:在 10A 条件下 Vf 仅约 0.42V,有助于降低导通损耗和整体热耗,提升系统效率,尤其适用于大电流低压降应用。
  • 较高浪涌能力:280A 的非重复峰值浪涌电流,可在短时冲击条件下承受较大的瞬态电流,增强系统抗冲击能力。
  • 宽工作温度范围:工作结温可达 +150 ℃,适合要求较高环境温度耐受性的电源模块和嵌入式系统。
  • 小型独立封装(TO-277):便于单独固定在散热片或支架上,利于热设计和模块化布局,维修及更换方便。
  • 低反向漏电:在满压条件下反向漏电控制在 230 μA 水平,适合对漏电有一定限制的应用场景。

四、典型应用场景

  • 开关电源输出整流与同步整流替代件
  • DC-DC 转换器输入/输出整流
  • 电池充放电保护与续流回路
  • 太阳能逆变器与MPPT控制器的低压整流
  • 汽车电子(车载辅助电源、车充)中对低压损与高浪涌能力的场合
  • 马达驱动、继电器去抖与吸收回路(作为续流二极管)

五、热管理与可靠性建议

  • 封装为 TO-277,散热能力好,但在 10A 连续工作时仍需良好散热路径:建议将器件固定在合适的散热片或铜面 PCB 上,确保结温 Tj 始终控制在产品额定范围内。
  • 在设计 PCB 布局时,应增大器件焊盘铜箔面积并连接热孔 vias,优化热阻从结到环境的通道。
  • 对长期高温或高负载工作,应参考厂方提供的 I_F vs Tj 降额曲线进行电流降额,以保证可靠性寿命。
  • 对浪涌或启动、关断瞬态,应在系统设计中加入适当的抑制器件(如 TVS、缓冲电阻/电感),避免反复超过 Ifsm 限值。

六、使用注意事项

  • 反向电压裕量:实际应用中应保留一定裕量,避免长期工作在接近 45V 的反向电压下,以减小反向漏电和热耗。
  • 并联时注意均流:若为获得更高电流而并联多个 SP1045L,应注意温度差导致的电流不均,建议采用单独限流或热平衡设计。
  • 浪涌与重复脉冲:Ifsm 标称为非重复峰值浪涌能力,重复冲击或长时间脉冲会降低器件寿命,应按厂方浪涌曲线和使用条件评估。
  • ESD 和静电敏感:肖特基结构对静电有一定敏感性,生产与装配时应做好静电防护。

七、封装与订购说明

  • 封装:TO-277,适合通过螺栓或螺钉固定至散热片(具体机械尺寸、引脚排列和引脚功能请参照厂方机械图纸与封装数据表)。
  • 型号与品牌:SP1045L(CJ / 江苏长电/长晶)
  • 采购与技术支持:建议向授权代理或厂方索取最新版数据手册与热特性曲线,获取完整的电气曲线、封装图和可靠性试验数据以支持最终设计。

八、总结

SP1045L 是一款面向中高电流整流与续流场合的独立式肖特基二极管,凭借 420 mV(@10A)低正向压降、45V 反向耐压和 280A 的短时浪涌能力,适合对效率与热管理有较高要求的电源、车用与工业电子应用。设计时应重视散热管理、反向电压裕量和浪涌保护,参考厂方完整数据手册以获得最优可靠性与性能。若需具体电气曲线、封装尺寸或样品测试数据,可进一步联系 CJ 厂家或其授权渠道获取。

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