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VE1CZ
03-07-2004, 02:34 AM
What are the specs on a transistor , srf 3897 / mrf 248?
I checked rf parts and i cant find any specs.I am looking for the max wattage and the frequency range, there are no specs listed in the rf parts web page only the price.
# # # # # # # # # #tnx Bob ve1cz

W9GB
03-07-2004, 05:08 AM
Bob,

Specifications for the MRF248 or SRF3897
Single HF High Power Silcon NPN - BJT

Here is the spec sheet for the MRF247
This devices is 75 Watts, 12.6 VDC device - 7.0 dB power gain - rated up to 175 MHz
http://www.doom.com/pdf/285/285215.pdf

For the MRF248 I did find reference specifications of:
80 watts; 175 MHz max freq. usage; #11.3 dB Gain
No indication fo the input voltage (12.6/13.8; 24/28 or 50 VDC)

w9gb

K8ERV
03-08-2004, 01:37 PM
I checked the noted DOOM site, but they want a subscription. I have had good luck just entering semi part numbers into GOOGLE.

TOM K8ERV

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