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Re: [Amps] buying MRF-150's

Subject: Re: [Amps] buying MRF-150's
From: "Will Matney" <>
Date: Wed, 07 Jun 2006 00:44:47 -0400
List-post: <>

It should have said the parts cost about X5 if they are doing the electronic 
matching. If not, the price is about the same everywhere else.



*********** REPLY SEPARATOR  ***********

On 6/6/06 at 11:16 PM Will Matney wrote:

>I wouldn't put much faith in Richardsons claims of lab testing everything
>as I used the be an OEM that bought from them and CECO. Bernie Guss, who
>was in sales with CECO told me they matched them by lot numbers the same
>as the rest. CECO was the division at one time that sold parts into the
>gray area, and who Richardsons sent everyone to. In order to receive lab
>testing and a certificate the parts cost about X5 what they do if they're
>actually doing it as they have to be placed in a jig and all the
>parameters matched. You also get a guarantee along with the certificate.
>About the only one who they actually do this for is the government. If I
>hadn't dealt with them as much as I did over the years, I wouldn't say it.
>I had an enginner at Motorola tell me at one time too that lot number
>matching was almost as good as they all should be the same off the same
>die or run. I imagine they told this to Merit at RF Parts as that's who
>Merit had make the SRF line. All they were, were re
> -marked MRF transistors like MRF-454, etc.. 
>If it were me, and wanting to buy these parts, I'd look at Westgate
>Laboratories. They have some of the better prices and can order in any
>part you want. They specialize in these type parts and if I recall are the
>successors to Elmira Electronics who were the Westinghouse vacuum tube
>folks from years back.
>*********** REPLY SEPARATOR  ***********
>On 6/6/06 at 7:33 PM Dan Levin wrote:
>>Well, I'm wouldn't say that RF Parts is as good a place as any if you care
>>about price, and I don't know if they really match parts or just match lot
>>numbers like CCI does.
>>Richardson Electronics ( is cheaper than RF Parts, maintains
>>stock, and has "real" (i.e. they will actually measure stuff in a lab, not
>>just match up lot numbers) matching capability.  They also carry very
>>high wattage resistors for those attenuator and terminator needs.
>>RFMW ( is cheaper than Richardson, and also has real matching
>>capability.  They likely have a pair in stock, but don't seem to keep as
>>much inventory as RELL does (RELL buys something like 25,000 at a time).
>>                          ***dan, K6IF
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