Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
ROHM RB058LAM-40TR RB058LAM
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- ROHM RB058LAM-40TR
- Type
- ROHM
- Unit
- Electronic Component
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- ROHM
- Electronic Component
- RB058LAM-40TR
- Electronic Component
- 1
- Package
- SOD-128
- Electronic Component
- Schottky Diode
- Electronic Component
- 0.054g
- Electronic Component
- 1
- Electronic Component
- BM0228685931
- Current
- 3A
- Diode
- 1
- Current(Ir)
- 2.5uA@40V
- (Vf)
- 690mV@3A
- 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.
RB058LAM-40TR 产品概述
一、主要特点
RB058LAM-40TR 为 ROHM（罗姆）出品的独立式肖特基二极管，适用于中等电流的开关与整流场合。其核心特点包括：在3A工作电流下典型正向压降为0.69V，直流反向耐压40V，直流整流电流3A，反向漏电流仅2.5μA（@40V），并具备90A的非重复峰值浪涌能力（Ifsm）。小型SOD-128封装，适合自动贴装与空间受限的电路板布局。
二、关键电气参数
- 正向压降 (Vf)：0.69V @ 3A（典型），用于估算导通损耗与热耗散。
- 直流反向耐压 (Vr)：40V，适合常见低压电源与DC-DC场景。
- 直流整流电流：3A（连续），需配合合理的PCB热管理。
- 反向电流 (Ir)：2.5μA @ 40V（典型），低漏电利于高效率设计。
- 非重复峰值浪涌电流 (Ifsm)：90A，具备一定的抗浪涌能力（一次性 / 瞬态场合）。
三、典型应用
- 开关电源与整流：输入整流、二次侧整流或同步整流辅助件。
- 反向极性保护：用于防止电池或外接电源接反导致损坏。
- 自由轮回路（flyback/freewheeling）：与感性负载配合以吸收反向电动势。
- 便携式器件与消费电子：充电器、适配器与点对点电源管理。
四、封装与可靠性
RB058LAM-40TR 采用 SOD-128 小型表贴封装，适配自动生产线与高密度布局。标识 -TR 表示卷带包装（tape and reel），便于贴片机取料。作为肖特基器件，需关注焊接曲线与回流温度限制，遵循厂商提供的封装与焊接指南以保证可靠性。
五、设计注意事项与建议
- 热管理：在3A工作点时，器件功耗约为P = Vf × I ≈ 2.07W，需通过加大铜箔散热或旁路散热器降低结温。
- 漏电随温度上升：反向漏电流会随温度增加，若工作在高温环境应考虑其对待机损耗与热稳定性的影响。
- 浪涌使用：90A Ifsm 说明器件能承受短时浪涌，但不宜作为长期反复冲击的保护方案；若存在频繁高浪涌，需选用更高额定或并联设计。
- 布局建议：缩短引线长度，增大焊盘铜层，确保良好散热与低阻连接；在高频开关场合注意并联适当的寄生电感。
六、订购信息与结语
型号：RB058LAM-40TR，品牌：ROHM（罗姆），封装：SOD-128，-TR 表示卷带包装。该器件适合对成本、体积与效率有平衡要求的低压电源设计。选型时请参考ROHM完整数据手册，结合实际工作温度、浪涌特性与PCB热设计做最终验证。
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.
