WMSIC Electronic Components

Jingdao Microelectronics SS1040B

ModelSS1040B
PackageSMB
BrandElectronic
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
Electronic SS1040B
Type
Jingdao Microelectronics
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
SS1040B
Electronic Component
1
Package
SMB
Electronic Component
Schottky Diode
Electronic Component
0.197g
Electronic Component
1
Electronic Component
BM0264231448
Current
10A
Diode
1
Current(Ir)
500uA@40V
(Vf)
550mV@10A
Electronic Component
55℃~+125℃
Electronic Component
Electronic Component
Electronic Component
3000

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

SS1040B 产品概述

一、产品简介

SS1040B 是晶导微电子推出的一款高电流表面贴装二极管,采用金属-硅结结构(Metal-Silicon junction),属于多数载流子传导器件。器件以 SMB 封装提供,专为低压、高频开关场合设计,兼顾低功耗与高浪涌承受能力,适用于功率整流、续流以及极性保护等场景。

二、主要电气与热特性

  • 二极管配置:单只独立二极管(1 个独立式)
  • 正向压降(Vf):典型 0.55 V @ IF = 10 A
  • 直流反向耐压(Vr):40 V
  • 整流电流(Io):10 A(额定整流电流)
  • 反向电流(Ir):最大 500 μA @ VR = 40 V
  • 工作结温范围:-55 ℃ ~ +125 ℃
  • 封装:SMB(表面贴装)

注:正向压降随电流和结温变化,给出的 0.55 V 为在 10 A 条件下的参考值;使用时应参考完整数据手册中的 Vf–If 曲线与热阻数据进行热设计和裕量计算。

三、关键特性与优势

  • 金属硅结、属于多数载流子器件,开关响应快,适合高频切换环境。
  • 低正向压降,降低导通损耗,有利于提高系统效率,尤其在大电流整流时优势明显。
  • 高正向浪涌电流能力,能承受瞬态过载及启动浪涌,增强系统抗冲击能力。
  • SMB 封装适配常见表面贴装工艺,利于自动化装配与高密度 PCB 布局。
  • 宽工作结温范围,适应严苛工业环境和温度变化场景。

四、典型应用场景

  • 开关电源(SMPS)中的低压整流与续流(freewheeling)环节;
  • 逆变器与电机驱动的低压高频整流;
  • 电源输入的极性保护与反向电流阻断;
  • 汽车电子(低压子系统)、LED 驱动及消费类电源模块;
  • 需要高整流电流且受限于体积的表面贴装功率应用。

五、封装与安装建议

  • SMB 封装适合常见 SMT 工艺,建议采用与厂商推荐一致的焊盘尺寸与焊膏印刷模板,以保证焊点可靠性与热耗散。
  • 对于 10 A 等级的整流应用,应在 PCB 上使用足够宽厚的铜箔并考虑多层铜层过孔以增强散热路径;在散热要求较高的场合,建议在器件附近保留热铜面并做热过孔(via)连接至内层或背面散热层。
  • 推荐遵循芯片制造商给出的回流焊工艺曲线及 ESD 管理流程,避免超出制造商规定的温度与时间参数。若需更详细的回流工艺参数,应参考完整数据手册和行业标准(如 J-STD-020)。

六、可靠性与使用注意事项

  • 反向电流在高温和接近 Vr 条件下会增加,长期在高反向电压或高温下工作会影响漏电与可靠性,设计时应留有裕度。
  • 在高脉冲能量或重复浪涌场合,应评估瞬态能量吸收能力与热循环寿命;必要时在电路中加入限流或软启动措施以减小器件应力。
  • 器件的最大结温为 +125 ℃,布板与散热设计应保证在最大工作条件下结温不超过规格限值。
  • 储存与装配需防潮、防静电,遵循制造商的储存与回流前干燥要求以避免焊接缺陷。

七、选型建议与替代考量

  • 若系统对正向压降有更严苛要求(进一步降低导通损耗),可在满足耐压与漏电要求下比较同类低 Vf 型或大电流肖特基器件的 Vf-If 曲线;
  • 若对高压耐受或低漏电有更高需求,可考虑不同耐压等级或快恢复类型的功率二极管,按具体应用(如高压侧整流或需要低反向恢复损耗)进行权衡。
  • 在最终选型前,建议参考晶导微电子完整数据手册中的电流-压降曲线、热阻与浪涌能力等详细参数,并在目标产品环境中做样机验证。

如需器件封装尺寸、焊盘推荐图、Vf–If 曲线或更详细的耐浪涌、热阻数据,我可以根据晶导微电子的完整版技术资料为您整理出具体的设计指导和 PCB 布局建议。

Request for quote

Send RFQ

Use the form for single models, category sourcing, and multi-line BOM requirements.

Send your target model and quantity.

Product sourcing intelligence

Model, package, availability, and BOM fit reviewed before quotation.

WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.

Electronic component model and package intelligence review on an ESD-safe inspection bench

Model & package intelligence

Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.

BOM matching and alternative component comparison workstation with protected IC samples

BOM matching & alternatives

BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.

Electronic component sourcing availability dashboard with ESD-protected samples

Sourcing availability signal

Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.

Buyer sourcing scenarios

Examples of how common component sourcing requests are organized.

Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.

The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.

Package confirmation Typical RFQ workflow

A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.

Mixed BOM triage Typical RFQ workflow

The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.

Obsolete-part review Typical RFQ workflow

Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.

Small-batch request Typical RFQ workflow

Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.

Repair batch evidence Typical RFQ workflow

When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.

Model suffix clarification Typical RFQ workflow

Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.

Export handoff Typical RFQ workflow

The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.

Replenishment inquiry Typical RFQ workflow

Related products

Packaged components ready for RFQ.