Power transistor substitutes - UK Vintage Radio Repair and Restoration Discussion Forum

jmcilkley · 8th Dec 2021, 9:23 am

Does anyone know of a replacement for 2S1162BG/2SP1717BG? I did find a suggested replacement of MJW1320A but that also seems not to be available.

Diabolical Artificer · 9th Dec 2021, 8:14 am

Can't find any data for a "2S1162BG" I did though for a 2SA1162 and an equivalent chart - https://alltransistors.com/crsearch....=70&caps=TO236

"2SP1717BG"

Shouldn't that be 2SB1717? But that doesn't make sense, 2SA and 2SB parts are both PNP. When I searched using your part numbers I get nothing related to transistors only odd Russian entries.

I think I might have some 2SA1162's, will look.The other one, bog knows.

Andy.

Herald1360 · 10th Dec 2021, 12:00 pm

2SA1162 isn't a power device, though. There is a 2N1162 TO3 device.

^^^WHS^^^^ for the other device

Can't find MJW1320A either though there is a MJW1302A TO247 device.

Any information on where used or even a circuit would help with sorting suitable substitutes.

Robert Gribnau · 10th Dec 2021, 12:28 pm

There is a 2S116: https://www.radiomuseum.org/tubes/tube_2s116.html

According to this site, the ACY24 and ASY48 are (near?) equivalents: http://obsoletetellyemuseum.blogspot...ransistor.html

paulsherwin · 10th Dec 2021, 12:32 pm

Again, the 2S116 isn't really a power transistor, just an OC81/AC128 class output transistor.

McMurdo · 10th Dec 2021, 2:16 pm

I think it should be 2SB1162 and 2SD1717

These are a complimentary audio output pair.

160V 12A 120W TO-3P package

edit: I would bang in a pair of the ubiquitous 2SA1943/2SC5200 but dont mix and match if there are several in parallel.

Herald1360 · 10th Dec 2021, 7:26 pm

That would fit with the MJW1302A being a substitute for one of them! TO247 and TO3P are near enough the same to be physically interchangeable.

Diabolical Artificer · 11th Dec 2021, 9:29 am

Think you may be right Kevin, we've no idea till the OP comes back. Always find that a bit odd when someone posts a question or request then vanishes for days or never comes back.

Andy.

8th Dec 2021, 9:23 am	#1
jmcilkley Tetrode Join Date: Jan 2020 Location: Ilkley, West Yorkshire, UK. Posts: 92	Power transistor substitutes Does anyone know of a replacement for 2S1162BG/2SP1717BG? I did find a suggested replacement of MJW1320A but that also seems not to be available.

9th Dec 2021, 8:14 am	#2
Diabolical Artificer Dekatron Join Date: Jul 2009 Location: Sleaford, Lincs. UK. Posts: 7,667	Re: Power transistor substitutes Can't find any data for a "2S1162BG" I did though for a 2SA1162 and an equivalent chart - https://alltransistors.com/crsearch....=70&caps=TO236 "2SP1717BG" Shouldn't that be 2SB1717? But that doesn't make sense, 2SA and 2SB parts are both PNP. When I searched using your part numbers I get nothing related to transistors only odd Russian entries. I think I might have some 2SA1162's, will look.The other one, bog knows. Andy. __________________ Curiosity hasn't killed this cat...so far.

10th Dec 2021, 12:00 pm	#3
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,535	Re: Power transistor substitutes 2SA1162 isn't a power device, though. There is a 2N1162 TO3 device. ^^^WHS^^^^ for the other device Can't find MJW1320A either though there is a MJW1302A TO247 device. Any information on where used or even a circuit would help with sorting suitable substitutes. __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O

10th Dec 2021, 12:28 pm	#4
Robert Gribnau Heptode Join Date: May 2017 Location: Konongo, Ghana Posts: 514	Re: Power transistor substitutes There is a 2S116: https://www.radiomuseum.org/tubes/tube_2s116.html According to this site, the ACY24 and ASY48 are (near?) equivalents: http://obsoletetellyemuseum.blogspot...ransistor.html __________________ Robert

10th Dec 2021, 12:32 pm	#5
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,959	Re: Power transistor substitutes Again, the 2S116 isn't really a power transistor, just an OC81/AC128 class output transistor.

10th Dec 2021, 2:16 pm	#6
McMurdo Dekatron Join Date: Jun 2009 Location: Staffordshire Moorlands, UK. Posts: 5,273	Re: Power transistor substitutes I think it should be 2SB1162 and 2SD1717 These are a complimentary audio output pair. 160V 12A 120W TO-3P package edit: I would bang in a pair of the ubiquitous 2SA1943/2SC5200 but dont mix and match if there are several in parallel. __________________ Kevin Last edited by McMurdo; 10th Dec 2021 at 2:22 pm. Reason: added alternative

10th Dec 2021, 7:26 pm	#7
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,535	Re: Power transistor substitutes That would fit with the MJW1302A being a substitute for one of them! TO247 and TO3P are near enough the same to be physically interchangeable. __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O

11th Dec 2021, 9:29 am	#8
Diabolical Artificer Dekatron Join Date: Jul 2009 Location: Sleaford, Lincs. UK. Posts: 7,667	Re: Power transistor substitutes Think you may be right Kevin, we've no idea till the OP comes back. Always find that a bit odd when someone posts a question or request then vanishes for days or never comes back. Andy. __________________ Curiosity hasn't killed this cat...so far.