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.
TBU-CA065-100-WH 是 BOURNS 面向线路级瞬态保护的单通道表面贴装型瞬态阻断单元(TBU,Transient Blocking Unit)。该器件在正常工作时呈低电阻通路,当线路出现超过设定触发电流的瞬态过流或冲击事件时,器件迅速进入高阻态以阻断能量传递,从而保护下游敏感电路。器件小巧(6.5 × 4.0 × 0.9 mm),适合对 PCB 面积和高度有限制的应用场合。
TBU 的典型工作机制为:在正常电流下,器件维持低阻态(示例中 RDS(on) ≈ 13.2 Ω),允许信号或电源通过;当线路电流超过预设触发电流(本器件 100–200 mA 范围)时,TBU 快速转换到高阻态,限制传输到下游的能量,从而保护后端电路。高阻态可持续阻断高能量脉冲,直到线路电压降至复位电压(Vreset ≈ 20 V)以下,器件才会自动复位回低阻态,实现非破坏性的可恢复保护。
该动作方式不同于单纯钳位型器件(如 TVS),更适合在长期或高能量脉冲下保护下游电路,避免被动器件在能量吸收时过热或损坏。
如需我帮您根据具体电路(工作电流、最大容许电压、外部保护器件配置)进行选型匹配或布板建议,可以提供电路简图与使用环境,我会给出更具体的设计建议。
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