Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
DOWO SMAJ5.0A
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SMAJ5.0A
- Type
- DOWO
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SMAJ5.0A
- Electronic Component
- 1
- Package
- DO-214AC
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.097g
- Electronic Component
- 1
- Electronic Component
- BM0264548678
- Voltage
- 9.6V
- Current(Ir)
- 800uA
- Voltage(VBR)
- 6.4V
- 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.
SMAJ5.0A（DOWO 东沃）产品概述
一、产品概述
SMAJ5.0A 为 DOWO（东沃）系列玻璃钝化芯片 TVS（二极管瞬态抑制器），单向结构，封装为 DO-214AC（SMA），用于保护 5V 工作电压系统免受瞬态过压冲击。器件在 10/1000μs 波形下提供高达 400W 的峰值脉冲功率能力（重复率/占空比 0.01%），响应极快、钳位能力强，适用于各类电源线、信号线及接口的浪涌保护。
二、主要电气参数
- 极性：单向（也有双向型号可选，但 SMAJ5.0A 为单向）
- 反向工作电压 Vrwm：5V
- 击穿电压 VBR（测试电流下）：6.4V
- 钳位电压 Vc（Ipp）：9.6V
- 峰值脉冲电流 Ipp：41.67A（对应 400W@10/1000μs）
- 峰值脉冲功率 Ppp：400W（10/1000μs，占空比 0.01%）
- 反向泄漏电流 Ir：≤ 800 μA
- 类型：TVS（瞬态电压抑制）
- 封装：DO-214AC（SMA）
- 标准：符合 RoHS 要求
三、关键特性与优势
- 玻璃钝化芯片：提高器件稳定性和长期可靠性，耐湿热、漏电低。
- 极快响应时间：对瞬态过压能在纳秒级别作出限制，保护下游电路元件免受冲击。
- 优秀钳位能力：在规定的 Ipp 下钳位电压 9.6V，能有效限制过电压幅度。
- 低泄漏：反向漏电小（≤800μA），对低功耗系统影响小。
- 高脉冲能量承受力：400W@10/1000μs 适合电源瞬态与雷击浪涌模拟测试场景。
- RoHS 合规：满足无铅环保要求，适合大多数商业与工业产品。
四、典型应用场景
- 5V 电源总线保护（如 USB、嵌入式板卡电源）
- 接口和通信端口防护（USB、串口、CAN 总线等 5V 级信号线）
- 电源适配器、开关电源的输入侧过压缓冲
- 工业控制设备、消费电子、网络设备和仪器仪表的抗浪涌设计
五、PCB 布置与使用建议
- 保护器件应尽可能靠近受保护端口或电源入口放置，以缩短寄生感抗和寄生电容路径。
- 保持导线/走线粗且短，减少串联阻抗，提升钳位效果。
- 对于高能量浪涌场合，建议在 TVS 前后搭配适当的串联阻抗（阻容网络或熔断器）以分摊能量。
- 注意焊接工艺与热回流参数，避免过高温度对玻璃钝化层造成影响。
六、可靠性与合规性
该系列采用玻璃钝化技术，具有良好的长期稳定性与抗环境能力。符合 RoHS 标准，适用于商业与工业级产品。对于关键安全应用，建议基于实际浪涌工况进行样机验证和定期寿命评估。
七、选型与订购提示
如需双向保护，可选择对应的双向型号；若系统对漏电流或钳位电压有更严格要求，可参考同系列其它工作电压等级或联系供应商获取完整数据手册与测试曲线（如 I–V、钳位特性与能量衰减曲线）。包装为 DO-214AC（SMA），便于常规贴片或手工焊接安装。若需批量采购或技术支持，请指定品牌 DOWO（东沃）及型号 SMAJ5.0A。
Request for quote
Send RFQ
Use the form for single models, category sourcing, and multi-line BOM requirements.
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.
BOM matching & alternatives
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
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.
A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.
The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.
Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.
Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.
When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.
Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.
The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
Related products
Packaged components ready for RFQ.
