Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
JSMSEMI MJE3055T
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
15
specifications
Core information
- Product name
- JSMSEMI MJE3055T
- Type
- JSMSEMI
- Minimum package
- 1000 管
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- JSMSEMI
- Electronic Component
- MJE3055T
- Electronic Component
- 1
- Package
- TO-220
- Electronic Component
- Transistor(BJT)
- Electronic Component
- 2.718g
- Electronic Component
- 1
- Electronic Component
- Transistor(BJT)
- Electronic Component
- BM0264536505
- Electronic Component
- Electronic Component
- Electronic Component
- 1000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MJE3055T 产品概述
一、产品简介
MJE3055T 是 JSMSEMI（杰盛微）出品的一款互补功率晶体管，封装为常见的 TO-220 形式，适用于中等功率的线性与开关场合。该器件属于双极型晶体管（BJT）族，通常与 PNP 互补型号（如 MJE2955T）配对使用，便于构建推挽输出级与功率放大电路。
二、主要特性
- TO-220 标准引脚与散热面设计，便于外接散热片与 PCB 固定，具备良好的热管理能力。
- 作为功率晶体管，具有较高的电流承载与集电极-发射极电压耐受能力，适合做输出级或开关器件。
- 与互补型号配合，可实现对称的正负电源输出，降低交越失真，便于设计 AB 类放大器。
- 兼顾线性失真与开关速度，可在音频放大、稳压、马达驱动等多种应用中使用。
三、典型应用场景
- 音频功率放大器（推挽/互补输出级）
- 线性稳压器的功率管与旁路保护元件
- 直流电机与步进电机的小功率驱动器
- 电源管理、逆变与开关电路（在允许的开关损耗范围内）
- 工业控制与测试设备的功率放大单元
四、封装与热性能注意
TO-220 封装便于通过螺栓或夹具安装大面积散热片。设计时应注意：
- 必须根据实际功耗选择合适散热片并进行热阻计算，按最高结温进行热余量计算与降额使用。
- 裸片金属背板通常与集电极相连，安装时注意绝缘垫片或绝缘套管的选择，以防短路。
- 在脉冲或开关应用中，应考量瞬态热阻与热循环导致的可靠性问题。
五、选型与使用建议
- 设计前比对器件的最大集电极电流、集电极-基极/集电极-发射极电压与功耗限值，结合 SOA（安全工作区）判定能否满足负载条件。
- 线性应用中注意基极偏置与温度补偿，避免热失控；推挽电路应配合适当的偏流与互补管匹配以减少失真。
- 开关应用需关注开关损耗、驱动电路和抗击穿能力，必要时采用保护电路（限流、缓冲、瞬态抑制）。
- 若需与其他型号互换，应核对封装引脚、极限参数与放大系数（hFE）曲线，优先参考厂商数据手册。
六、互补与替代
常见互补型号为 MJE2955T（PNP），两者配合可构成对称输出级。更换或替代时建议以相近封装和相同性能档次的功率晶体管为准，并进行实测验证。
总结：MJE3055T 以其 TO-220 封装和中功率能力，适合用于音频、稳压与一般功率放大或开关场景。实际设计时应严格参考 JSMSEMI 官方数据手册进行热设计与电气降额，以确保长期稳定与可靠。
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.
