Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
DOWO SMAJ54CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SMAJ54CA
- Type
- DOWO
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SMAJ54CA
- Electronic Component
- 1
- Package
- DO-214AC
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.14g
- Electronic Component
- 1
- Electronic Component
- BM0264866302
- Operating Temperature
- 55℃~+150℃
- Voltage
- 87.1V
- Current(Ir)
- 4.59uA
- Voltage(VBR)
- 60V
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMAJ54CA 产品概述
一、参数概览
SMAJ54CA 是 DOWO（东沃）出品的双向 TVS 晶体管，封装为 DO-214AC（SMA）。主要电气参数：反向截止电压 Vrwm = 54 V，击穿电压 VBR ≈ 60 V，钳位电压 Vc ≈ 87.1 V（在 400 W、10/1000μs 脉冲条件下），峰值脉冲电流 Ipp ≈ 4.59 A，峰值脉冲功率 Ppp = 400 W（10/1000μs，重复率 0.01%），反向漏电流 Ir ≈ 4.59 μA，工作温度范围 -55 ℃ 至 +150 ℃。器件为玻璃钝化芯片，符合 RoHS 要求。
二、主要特性
- 双向抑制：适用于交流或双极性浪涌场合，支持双向和单向单元选择。
- 高脉冲能量吸收：400 W（10/1000μs）峰值功率，适合一次性较大能量冲击吸收。
- 低漏电流：典型 Ir ≈ 4.59 μA，有利于对待机功耗敏感的电路。
- 快速响应：TVS 本质上响应时间极短，可在浪涌瞬间限制电压，保护后端元件。
- 可靠封装与工艺：玻璃钝化芯片提高长期稳定性和抗湿性能，SMA 封装便于波峰/回流焊和手工焊接。
三、典型应用场景
- 48 V 通信/基站电源线路、PoE 供电保护；
- 直流电源总线、电池保护、逆变/UPS 辅助保护；
- 工业控制设备、测控接口和输入输出端口保护；
- 汽车电子（需按系统认证和热设计验证）；
- 通用电子设备的端口过压/浪涌防护。
四、使用与设计建议
- 将 TVS 直接并联于被保护元件两端，尽量靠近被保护器件或接口布局；
- 为防止持续能量损耗，避免在超过器件额定脉冲条件下重复工作；重复脉冲时注意平均功率和 PCB 散热能力；
- 在高能量冲击应用中配合熔断器或限流元件使用，以防器件因连续能量注入而损坏；
- PCB 上提供充足铜箔散热面积和多层热通道，可提升峰值冲击后的可靠性。
五、可靠性与合规
SMAJ54CA 使用玻璃钝化工艺提升湿热与长期漂移性能，工作温度覆盖工业级范围（-55 ～ +150 ℃），并满足 RoHS 环保要求。建议在最终产品中进行温升、热循环和浪涌耐受测试以验证系统级可靠性。
如需器件封装图、引脚资料、典型钳位曲线或样品与订购信息，可提供进一步的 datasheet 说明或技术支持。
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.
1 Piece Integrated Circuit for IRS20124S IRS21956S SOP-20 IRS2453DS SOP-14
- Model
- IRS20124S
- Package
