Hi. Does anyone know what part the transistor SRF772 really is? They are in a TPL5010 RF amplifier. SRF772 is mentioned nowhere on Google or Bing. I was told that more than likely, the transistor might have that weird designation because when TPL bought a certain amount of these transistors, Motorola stamped a different part number on them for that specific brand, so when people needed a replacement transistor, they would have to go to TPL for the part, and not Motorola, to protect the OEM agreement.
It’s a neat little amplifier, designed to work from 21-30Mhz, class AB, so it can work on AM, FM, CW, SSB. 60 watts carrier/140 PEP. I use it with an old Realistic (Radio Shack) HTX-100 transceiver on SSB on ten meters, which gives it a good boost from the radio’s max output of around 20 watts. Thanks for any help.>The TechForum Cross Reference category is for parts that Digi-Key does not sell or parts that have gone obsolete. Our Engineers and Techs have reviewed the specifications for these parts and made a recommendation for a replacement. Please review the suggested part to ensure it will work for your application.