[NLRS] MGA-86576

[Dr. Gerald N. Johnson]

> Please note that the ABP products (Item 24-119) are being obsolete due to cease of subcontractor’s manufacturing activities and
> other products (Item 1-23) are being obsolete due to economical reasons. Last time buys will be offered through Jan 31, 2013.
> Orders will be acceptable on a non-cancelable, non-returnable basis only. Customer required delivery dates must be scheduled on or
> before July 31, 2013. Avago Technologies reserves the right to limit last time buy quantities based on capacity and material
> availability.

MGA-86576 is shown as items 44 and 45 so the subcontractor has quit.

If DEMI has some he will want to keep them for products and then will 
want to find substitutes.

Same thing for the 36077.
First column is the list number, second column the part, third column 
says these were standard parts and the fourth column shows the suggested 
replacements:
> 42 ATF-36077-STR Standard VMMK-1225/VMMK-1218/ATF-36163
> 43 ATF-36077-TR1 Standard VMMK-1225/VMMK-1218/ATF-36163
> 44 MGA-86576-STRG Standard MGA-86563/VMMK-3803/MGA-30989
> 45 MGA-86576-TR1G Standard MGA-86563/VMMK-3803/MGA-30989

These quotes are from
www.avagotech.com/docs/OBS070312WSD2

Rev 2 of that document extends the time for the last delivery:
> Dear valued customers,
> Avago Technologies has received an overwhelming last time buy
 > demand for certain products listed in Product Obsolescence
 > Notification: OBS070312WSD2. Limited raw material and production
 > capacity is constraining us from fulfilling the shipment within
 > the last time ship period (31st July 2013).
> Avago Technologies is announcing that the last time ship period
 > for the products listed below will now be extended to 28th Feb 2014.
 > We are working at the fastest pace possible to support customer
 > shipments.

www.avagotech.com/docs/OBS070312WSD2-RevA
And includes the 36077 and 86576.

This obsolescence schedule has been known for nearly a year.

I've not yet looked up the suggested replacements.

I heard from Barry last year after MUD that Al Ward had redesigned DEMI 
products to use NEC transistors instead of 36077 because NEC were good 
parts, easier to acquire, and he's retired from Avago. He probably also 
knew of the 36077 going to go obsolete already. But I've not seen any 
hint from DEMI of the changes. Steve is slow to update the on line 
catalog so it may not exactly represent his actual stock. I have no 
information on whether he has bought way ahead or has been depending on 
buying parts as needed.

Digi-Key has some interesting MACOM parts and I think Mouser has 
Skyworks now.

Another obsolete part is the HSCH9161 liked for 47 and 78 GHz mixers. 
Its been obsolete since 2007. There's nothing in the current Avago list 
of Schottky diodes rated for higher than 26.5 GHz. The BAT15-099 has 
been shown to work at 47 and 78 GHz but not well. The article I found in 
DUBUS said it might get out to a kilometer, but that hadn't been proven 
when the article was written.

73, Jerry, K0CQ
On 12/7/2013 3:24 PM, Donn, WA2VOI wrote:
>
>
> Mouser lists its "end of life," and show 0 stock also.
>
> Maybe we should order some from DEMI as spares to have on-hand ?
>
> 73 Donn
> ----- Original Message ----- From: <w0zq at aol.com>
> To: <nlrs at mailman.qth.net>
> Sent: Saturday, December 07, 2013 8:48 PM
> Subject: [NLRS] MGA-86576
>
>
>>
>>
>>
>> I am working on my DEMI 2304 system and need to replace the front end
>> device, a MGA-86576. Looks like I am down to my last one. Digi-Key
>> shows zero in stock. Does anyone know if this part has become extinct
>> ? DEMI still lists it.
>>
>> 73, Jon
>> W0ZQ
>>