[Kenwood] Pin Diodes for TS-930

[Garey Barrell]

Jeff -

The MPN3404 is used throughout (80 some pieces) the Drake TR-7 for 
filter switching.  The only ones that have had problems are the ones 
that switch the calibrator in and out.

My understanding is that ALL 1N4007's are PIN structure, but ONLY 
the "7" part.

73 & Merry Christmas, Garey - K4OAH

WR2E wrote:
> 
> The  MPN3700  is a PIN DIODE in a TO92 package ... it meets the spec
> requirements electrically, it is of course a bit larger than the axial
> leaded part, but in most cases will probably fit in it's place.  It is
> cheap ( appx 50 cents ), and available (digikey, jameco, newark,
> {10 for $3.00 at www.partsandkits.com}).  I'll be trying some of these
> in one of my 440's and will report the results.
> 
> MPN3404 is also a PIN diode in a TO-92 but lower voltage/current.
> 
> SOME of the generic 1N4007 diodes are also PIN structure, believe it or
> not, but as far as I know, there is no way of knowing which is which 
> without testing them.
> 

> 73 de Jeff / WR2E
> 
> 
>>------------------------------
>>
>>Message: 6
>>Date: Fri, 24 Dec 2004 12:43:37 -0500
>>From: "Jim Dicso" <dicso123 at hotmail.com>
>>Subject: Re: [Kenwood] Pin Diodes for TS-930.
>>
>>Eric,
>>
>>Thanks for your sound advice.
>>
>>Several Google searches have yielded part #'s by HP, Microsemi and others
>>and some small quantity sources.
>>
>>I'm sure you've seen the 'cheap' gene behaviour,  no PIN diodes in stock but
>>thousands of  switching diodes  in stock ....
>>I have to fight the urge to use the switching diodes andf go with PIN
>>diodes.
>>
>>Regards, Jim K2SZ
>>