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Re: [Amps] New NXP BLF578XR 1200W LDMOS FET is "indestructible"

To:, Amps <>
Subject: Re: [Amps] New NXP BLF578XR 1200W LDMOS FET is "indestructible"
From: jeff millar <>
Date: Sat, 23 Jul 2011 16:04:49 -0400
List-post: <">>

Some YouTube videos...

F1JRD also has an article in Dubus    

jeff, wa1hco

On 07/23/2011 12:24 PM, Gary K9GS wrote:
> Hello Jeff,
> Any pictures available of the copper heat spreader, aluminum plate, etc??
> On 7/23/2011 10:34 AM, jeff millar wrote:
>> This email describes what I've learned from looking at these modern 
>> transistors
>> for the last few months.  It seems to me like a fundamental crossover point 
>> has
>> been reached.  Silicon processing technology has produced rugged VHF/UHF
>> transistors, with reasonable impedance matching for a reasonable cost,
>> especially considering all the other costs associated with an amplifier.  
>> These
>> parts will only get better and cheaper as time goes on.
>> Brian, WA1ZMS, brought a dual MRFE6VP61 on 2 meters (2 x 1250W) to the last 
>> VHF
>> contest.  The parts are $271 each at Digikey...

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