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Need help identifying type of SMD component

 
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ok2003



Joined: 16 Dec 2007
Posts: 1

PostPosted: Sun Dec 16, 2007 2:58 pm    Post subject: Need help identifying type of SMD component Reply with quote

On ATI capture card, component is labeled on board with B, such as B27, B28, B29, 2 leads, looks like resistor and always has cap beside it.
Never saw a B beside a component like this..what the heck is it? Thanks
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torbjorn



Joined: 07 Jun 2007
Posts: 370
Location: Sweden

PostPosted: Tue Dec 18, 2007 9:09 am    Post subject: Reply with quote

According to the (now obsolete) IEC 750 standard, B is used to designate various sensors, transducers etc. I. e. thermocouples, photo cells, thermistors, microphones. Maybe your parts could be NTC resistors that are used for some kind of temperature compensation?

It is also common to use B to designate jumpers, zero-ohm resistors etc.

In the past, Philips used B to designate vacuum tubes and lamps.
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