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Re: [Amps] new high power transistor announced

Subject: Re: [Amps] new high power transistor announced
From: Steve Thompson <>
Date: Fri, 06 May 2016 21:53:58 +0100
List-post: <">>
It's been a game of musical chairs. The old NXP product line
(BLF... etc.) has been floated off separately as Ampleon, centred
on the original Philips RF factory at Nijmegan.

They have some new products, BLP... family. They don't hit new
heights in output power but have improved UHF characteristics.

Both firms also seem to be battling on the 'solid state microwave
oven' front with 250W 2.4-2.5 GHz parts. Legal limit on 13cms anyone?


NXP (Philips) combined Rf power products with Freescale
Semiconductor (Motorola) a while back. Thankfully, product
development has continued and NXP Semiconductors just announced
a new LDMOS transistor, the MRF1K50H and MRF1K50N. This is
another 50 volt part to supercede the 1.25 kW MRFE6VP61K25H. We
can already like the new parts numbering scheme!

The new part will develop 1500 watts of CW power, and is said
to be a drop in for the other part, with only "slight
retuning", whatever that means. A datasheet is not available
yet, but preliminary info shows 23.5 dB gain at 100 MHz, and
suitability for linear power. The frequency range is 1.8 to 500
MHz, and 74% efficiency in class AB (!) in narrowband reference
circuits. At 230 MHz, it is capable of 65:1 VSWR at all phases
when pulsed for 1500 watts output, push pull (Gemini device).

NXP and Freescale have made significant inroads for products
for ISM power, and ham radio amplifiers would be a natural
product to use this device.

73 John K5PRO

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