Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
Available for RFQ
Technical data
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MMBTH81 是一款由安森美(ON Semiconductor)生产的高性能表面贴装型 PNP 晶体管,专为各种电子应用设计,具有优良的电气特性和可靠性。此器件广泛应用于小信号放大、开关控制及其他需要高频特性的电路中,其紧凑的 SOT-23-3(TO-236)封装使其适合于现代电子设备的小型化趋势。
MMBTH81 的设计旨在满足多种应用需求,特别是通信和消费电子产品。其主要特性和优势包括:
高频响应: 具有高达 600 MHz 的跃迁频率,使其适用于高频信号放大的场合,如无线通信和视频信号处理。
温度稳定性: 工作温度范围广,从 -55 °C 到 150 °C,使其能够在极端环境下正常工作,确保产品在各种应用场合的可靠性。
小尺寸封装: SOT-23-3 封装提供小巧的尺寸,同时在 PCB 上节省空间,适合于对体积要求严格的现代电子设备。
高电流增益: 最小 DC 电流增益(hFE)为 60,意味着在特定工作条件下,能够提供良好的放大能力,保证电路性能。
低功耗: 最大功率为 225 mW 使其非常适合于低功耗的应用中,这对于电池供电的设备尤其重要。
由于 MMBTH81 在性能和可靠性上的优越表现,它广泛应用于以下领域:
在使用 MMBTH81 时,设计师需要注意以下几点:
热管理: 尽管其工作温度范围宽广,确保良好的散热设计依然重要,尤其在高功率应用情况下。
偏置电压和电流: 正确设置偏置电压和电流,以确保在性能范围内运行,从而获取最佳的增益特性及频率响应。
PCB 设计: 在 PCB 布局中考虑合适的走线宽度和过孔设计,以降低寄生电感和电阻的影响,保障信号完整性。
总之,MMBTH81 是一款多用途的 PNP 晶体管,以其卓越的电气特性、稳定性与小体积,在现代电子产品中占据了重要地位。其广泛的应用领域和高效的性能表现,使其成为设计师在选择小信号晶体管时的优先选择之一。无论是在消费电子还是通信设备中,MMBTH81 都能满足高效能和可靠性的要求,推动电子设备朝着更高性能、更小尺寸的方向发展。
Request for quote
Use the form for single models, category sourcing, and multi-line BOM requirements.
Product sourcing intelligence
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
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