瑞萨用于Wireless LAN/PHS/Cordless/FRS等的高频分立晶体管
瑞萨用于家电及消费电子领域的可控硅管Renesas

简介：瑞萨的新型SiGe及Si双极晶体管具有高频、低噪音、高增益、宽动态范围以及小体积等突出优点,是用在LNA、混合器、缓冲器、VCO以及低至中功率放大器的极佳解决方案。而用于家电及消费电子领域的可控硅管,瑞萨公司有完整的系列,包括150度C和125度C类型的元器件,能满足市场的需求。这次在线座谈将介绍用于Wireless LAN/PHS/Cordless/FRS等的高频分立晶体管和用于家电及消费电子领域的可控硅管的性能和特性以及应用.

问：用在240V AC开关,如和选择TRIAC的耐压?要留多少富余量合适?通过的电流如何选择呢?
答： We recommned the choose voltage class as follw.
(supply voltage)×2～3≦permissible voltage for Triacs.

问：有用于广播发射机的高频晶体管吗？最大功率能做到多少？
答： Unfortunately, we don"t have PA transistor for broadcasting application.

问：可控硅移相触发在感性负载时，怎样削除电压、电流不同，若用阻容吸收，那电阻跟电容该怎么取。谢谢！
答： [current class]
1)When no rush current flows
  (Load current)×1.5≦permissible current.

2)When the rush current flows
  (Load current)×3.0≦permissible current.

[voltage class]
Supply votage AC200V-22

问：为什么双极的工艺精细程度不如MOS?
答： I think Bipolar transistor is mainly analoge functuon. It depand on application request.
To fine pattern ,it dose not mean good characteristics. Application of COMS is degital function(0/1 function). To fine pattern ,device will get high performance.

问：请介绍可控硅励磁整流装置
答： Sorry, we don"t have such products.

问：从那里可以下载到SiGe高频功率管的参考设计和S参数?
答： Please contact sales office in Hongkong.

问：Renesas公司有没有可控制3相380V马达的TRIAC?
答： Please tell our sales the conditions of motor as follws.
1)load current
   (constant cuurent and rush current)
2)Input supply voltage
3)maximum ambient temperature
4)heat sink fin"s spec for TRIAC

问：请问高频功率晶体管在负载失配甚至开路状态下所能持续的不损坏时间有多长?是否需要在设计上额外考虑保护电路?
答： Understanding mis match condition ,it depend on
circuits condition. I recomended using Isolator.

问：瑞萨的新型SiGe及Si双极晶体管的主要参数及突出特性?
答： Our high ferquency transistor,gain and Noise figure is key parameter. New product our SiGe transistor HSG1002 is |S21| 11dB @2v,10mA,5.8GH
and NF 1.2dB @2v,10mA,5.8GHz.

问：请您谈谈Triac & Thyristor在变频控制领域的应用情况和renesas在这方面的优势.
谢谢!
答： We offer high voltage TRAIC and SCR with up to 150 deg.c device which is good in the Inverter design at low frequency application, for high PWM you need IGBTs.