Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: MRF150 Source?  (Read 2767 times)
W0DOT
Member

Posts: 1




Ignore
« on: December 29, 2012, 02:06:21 PM »

Does Motorola still make the MRF150 or has it been replaced/discontinued?  Tried to find a source but internet search only returns bazillions of data sheet sources and the sources I found on ebay were either used or "reconditioned".  I'd prefer to use new....
Logged
WX7G
Member

Posts: 5920




Ignore
« Reply #1 on: December 29, 2012, 04:11:52 PM »

RF Parts stocks them at $49.95.
Logged
KE3WD
Member

Posts: 5694




Ignore
« Reply #2 on: December 29, 2012, 06:04:17 PM »

A "reconditioned" bipolar RF power output transistor? 

Gotta wonder how that could be done. 

Use the eleven foot pole, reserved for that which I would not touch with the ten foot pole...


73
Logged
W9GB
Member

Posts: 2599




Ignore
« Reply #3 on: December 29, 2012, 06:22:43 PM »

MA/COM is current mfg. of the MRF150 MOS POWER FET 150 W transistor, 50 VDC.
Designed primarily for linear large-signal output stages up to 150 MHz.

Communications Concepts, Inc. sells many of most popular
Motorola RF transistors (now MA/COM, SiRF, or Freescale)
http://www.communication-concepts.com/index.php/components/rf.html

The CCI / Motorola EB104 600 W Amplifier uses the MRF150 RF transistor.
http://www.communication-concepts.com/index.php/amplifiers/eb104.html

MA/COM MRF150 - $64.00 ; $256.00 for set of 4.
http://www.communication-concepts.com/index.php/components/rf/transistors-mrf150.html

MA/COM MRF150 Datasheet
http://www.communication-concepts.com/index.php/fileuploader/download/download/?d=0&file=custom%2Fupload%2FFile-1339373810.pdf
« Last Edit: December 29, 2012, 06:32:36 PM by W9GB » Logged
AA4HA
Member

Posts: 1378




Ignore
« Reply #4 on: December 29, 2012, 07:09:22 PM »

A "reconditioned" bipolar RF power output transistor? 

Gotta wonder how that could be done. 

Silly, everyone knows you start out by replacing the standard transistor oil with silicone based transistor oil. The electrons travel faster.   Grin
Logged

Ms. Tisha Hayes, AA4HA
Lookout Mountain, Alabama
K2DC
Member

Posts: 1346


WWW

Ignore
« Reply #5 on: December 30, 2012, 03:12:33 AM »

A "reconditioned" bipolar RF power output transistor? 

Gotta wonder how that could be done. 

Silly, everyone knows you start out by replacing the standard transistor oil with silicone based transistor oil. The electrons travel faster.   Grin

Don't forget fixing all the missing holes.  Those electrons gotta have a place to go.

73,

Don, K2DC
Logged
G3RZP
Member

Posts: 4391




Ignore
« Reply #6 on: December 30, 2012, 04:00:17 AM »

Don't you have to put some smoke into the capsule?
Logged
K9AQ
Member

Posts: 54




Ignore
« Reply #7 on: December 30, 2012, 06:14:34 AM »

There are lots of brand new MRF150's available on Ebay.  They come from distributors in China but I have bought many of them and have always had good results.  I test all my MOSFETs before I install them and so far I have only found one defective one, which the distributor replaced at no cost.  Typical pricing is around $29, a little less if you buy in quantity.

Don
K9AQ
Logged
JANIS59
Member

Posts: 5




Ignore
« Reply #8 on: January 01, 2013, 12:13:04 AM »

What is with MRF154 benefits over the Infineon`s DE series 150, 275, 375, 475?
They keep the frequencies up to 100 MHz and thermal load until 1,8kW/piece, thus I see the MRF really benefits only between 100 and 400 MHz.
Or something I missed from my eyesite?
Logged
M0HCN
Member

Posts: 473




Ignore
« Reply #9 on: January 01, 2013, 04:48:13 AM »

Note that those are switching parts and not designed for linear service, note also that the 730W thermal rating of the DE475 is given at 25 degrees C case temperature and with a derating factor of 4W/C (The others are worse)......

For RF plasma generators and such in the 13.56Mhz ISM band (clearly what these are designed for) these are a solid choice, but I doubt you would get good performance in a linear amplifier.

TANSTAAFL applies to RF power devices.

73 Dan.
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!