Re: Modern replacements / xref for deflection transistors

ZTX653 = 2A continuous, 100Vceo, 175mhz...

Who would have guessed!

John :-#)#

Andrew Welburn wrote:
> Really? A T0-92 replacing the original? (Mpsu07)
>
> Andrew Welburn (mobile)
> www.andys-arcade.com
>
> On 24 Nov 2012, at 12:36, "William Boucher" <wboucher6@cogeco.ca> wrote:
>
>
>> I wish I could unsend my previous message and replace it with this one. I was at work and a bit distracted when I type the first one. Replacing a 2A part with a 0.5A part obviously only works under certain conditions. I wouldn't want that advice to lead to failures in other applications so I've updated the list so that it is not application dependent. The following replacements should always work.
>>
>>
>> MPSU57 = PNP, 100V, 2A, 150 MHz, hfe = 140 @ 50mA, 65 @ 250 mA, 30 @ 500 mA
>> Replace with ZTX753
>> http://www.digikey.com/product-detail/en/ZTX753/ZTX753-ND/92510
>>
>>
>> MPSU60 = PNP, 300V, 0.5A, 60 MHz, hfe = 25 @ 1mA, 30 @ 10 mA, 30 @ 30 mA
>> Replace with MPSW92R
>> http://www.digikey.com/product-detail/en/MPSW92RLRAG/MPSW92RLRAGOSCT-ND/1967202?cur=USD
>>
>>
>> MPSU07 = NPN, 100V, 2A, 150 MHz, hfe = 110 @ 50mA, 65 @ 250 mA, 33 @ 500 mA
>> Replace with ZTX653
>> http://www.digikey.com/product-detail/en/ZTX653/ZTX653-ND/92504
>>
>>
>> MPSU10 = NPN, 300V, 0.5A, 45 MHz, hfe = 25 @ 1mA, 40 @ 10 mA, 40 @ 30 mA
>> Replace with MPSW42G
>> http://www.digikey.com/product-detail/en/MPSW42G/MPSW42GOS-ND/1482545?cur=USD
>>
>>
>> William Boucher
>> http://www.biltronix.com
>>
>>
>> ----- Original Message ----- From: <wboucher6@cogeco.ca>
>> To: <vectorlist@vectorlist.org>
>> Sent: Friday, November 23, 2012 3:38 PM
>> Subject: re: VECTOR: Modern replacements / xref for deflection transistors
>>
>>
>>
>>> Regarding replacing MPSU57 with MPSA56, it would be much better to use MPSW92R...
>>> http://www.digikey.com/product-detail/en/MPSW92RLRAG/MPSW92RLRAGOSCT-ND/1967202?cur=USD
>>>
>>> however, an ideal replacement (much closer equivelency) component would be the ZTX753...
>>> http://www.digikey.com/product-detail/en/ZTX753/ZTX753-ND/92510
>>>
>>> The NPN compliment to this would be the ZTX653...
>>> http://www.digikey.com/product-detail/en/ZTX653/ZTX653-ND/92504
>>>
>>> A good sub for MPSU07 is MPSW42G...
>>> http://www.digikey.com/product-detail/en/MPSW42G/MPSW42GOS-ND/1482545?cur=USD
>>> Also, the MPSU10 can also replace the 07.
>>>
>>>
>>> A good press-on heatsink for the newer parts is here:
>>> http://www.digikey.ca/scripts/DkSearch/dksus.dll?WT.z_header=search_go&lang=en&keywords=HS251-ND&x=19&y=21&cur=USD
>>>
>>>
>>> Bill Boucher
>>> http://www.biltronix.com
>>>
>>>
>>>
>>>> From: Ian Eure <ieure@mac.com>
>>>> Date: Fri, Nov 23, 2012 at 2:27 AM
>>>> Subject: VECTOR: Modern replacements / xref for deflection transistors
>>>> To: vectorlist@vectorlist.org
>>>>
>>>>
>>>> I managed to fry a G05 board pretty well. I swapped this working board into
>>>> a dead monitor to test, turns Q608 & Q709 had been swapped and R718 caught
>>>> fire. Also as it happens, someone had replaced F700 on this deflection
>>>> board with a 10A fuse, so while F600 blew and the Y section is likely fine,
>>>> a bunch of stuff in the X section got fried.
>>>>
>>>> It looks to me like R718, R713, Q705, and Q706 at least are dead.
>>>>
>>>> Q705 is just a 2N3906, which I can get anywhere, but Q706 looks harder to
>>>> come by. While I was digging around the internet, I found this incredibly
>>>> great list of V2000/G05 transistors with some cross references:
>>>> http://westnet.com/~chris/arcade/g05_transistor_list.pdf Unfortunately,
>>>> this list is a good 13 years old itself, so the parts it suggests are
>>>> obsolete as well.
>>>>
>>>> I went looking around and MPSU57 is long discontinued, as is SK3200 and the
>>>> "upgrade" NTE50 part. NTE189 is the modern replacement for NTE50, but seem
>>>> to be extremely expensive ($30) when they can be found at all. I found some
>>>> folks saying they had successfully substituted MPSA56 for MPSU57, as well
>>>> as MPSA05 for the MPSU07 at Q607/Q707.
>>>>
>>>> Has anyone successfully substituted those parts? Looking at the datasheets,
>>>> it seems like the tolerances are somewhat lower, so I was hoping someone
>>>> could point me in the right direction. I have a few boards I want to work
>>>> through, so having some of these on hand will be a big help.
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>>>>
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-- 
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