What the spec sheet says is this;
"The ARF1505 is an RF power transistor designed for off-line 300V operation in
very high power scientific, commercial,
medical and industrial RF power generator and amplifier applications up to 40
MHz."
On the webpage it says they are for;
"INDUSTRIAL, SCIENTIFIC, MEDICAL (ISM) & HF COMMUNICATIONS"
Notice it saying amplifier applications. On the linear portion, that would
really be where you set the bias at. It should run fine at class A or AB
service. Also, being for HF communications would have to be linear. To get the
full 1500 watts input they say this in the fine print;
"The rated 1500W power dissipation is only available
when the package mounting surface is at
25°C and the junction temperature is 200°C. The
thermal resistance between junctions and case
mounting surface is 0.12 °C/W. When installed, an
additional thermal impedance of 0.1°C/W between
the package base and the mounting surface is typical.
Insure that the mounting surface is smooth
and flat. Thermal joint compound must be used to
reduce the effects of small surface irregularities.
The heatsink should incorporate a copper heat
spreader to obtain best results."
Hope this helps........
Best,
Will
*********** REPLY SEPARATOR ***********
On 5/21/05 at 1:16 AM Winfried Kriegl wrote:
>Are these devices suitable for LINEAR operation ?
>
>73 Win DK9IP/KH7CD
>
>
>> --- Ursprüngliche Nachricht ---
>> Von: "Will Matney" <craxd1@ezwv.com>
>> An: amps@contesting.com
>> Betreff: [Amps] ARF1505
>> Datum: Thu, 19 May 2005 12:12:42 -0400
>>
>> All,
>>
>> Has anyone tried the ARF1505 FET in any solid state amps yet? The
>> characteristics look very good and it is a HV FET running at 300 Vdc with
>a 700
>> watt output. It is for operation primarily from 2 to 30 Mhz. Below is a
>link
>> to the page it's at and where the spec sheet can be downloaded. Also
>notice
>> the test frequency given on the spec sheet, wonder why they used and or
>> published that?
>>
>> Page;
>>
>> http://www.advancedpower.com/rfdisplay/default.aspx?marketid=13&appid=-1
>>
>> Spec;
>>
>> http://www.advancedpower.com/Communities/APT/pdfs/ARF1505.pdf
>>
>> Best,
>>
>> Will
>>
>> _______________________________________________
>> Amps mailing list
>> Amps@contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>>
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