Hi,
Anyone recognizes the model/manufacturer for this audio jack?
It's a 4 contacts-TRRS type, no switch. SMD (L/R contacts, i.e. T and R1) and TH mounting (ground/mic contacts, i.e. R2 and S). Also comes with extra mechanical support in the form of a silver metal band with TH mounting to board.
It's used in quite a few digital audio players (Fiio, Cayin etc.) but after rather extensive search (Mouser/DigiKey/Arrow/Farnell/LCSC/Aliexpress etc.) I was not able to identify it.
Eventually (actually just a few mins before writing this) I think I think I may have identified the manufacturer (G-Switch - 轻触开关-防水轻触开关-TYPE-C连接器-TYPE-C母座厂家-品赞电子) and I even found a connector listed on their website that resembles very closely the one in question (PJ-0275S00 - 3.5四极6PIN带铜套贴片镀金耳机插座_品赞电子), however not the exact one I am after. Nor was I able to see one for sale.
I guess I'll reach out to G-Switch and assuming they reply will find a way to source a replacement for the connector I am interested in, however I thought it does not hurt to ask a question here as well. Thanks
Anyone recognizes the model/manufacturer for this audio jack?
It's a 4 contacts-TRRS type, no switch. SMD (L/R contacts, i.e. T and R1) and TH mounting (ground/mic contacts, i.e. R2 and S). Also comes with extra mechanical support in the form of a silver metal band with TH mounting to board.
It's used in quite a few digital audio players (Fiio, Cayin etc.) but after rather extensive search (Mouser/DigiKey/Arrow/Farnell/LCSC/Aliexpress etc.) I was not able to identify it.
Eventually (actually just a few mins before writing this) I think I think I may have identified the manufacturer (G-Switch - 轻触开关-防水轻触开关-TYPE-C连接器-TYPE-C母座厂家-品赞电子) and I even found a connector listed on their website that resembles very closely the one in question (PJ-0275S00 - 3.5四极6PIN带铜套贴片镀金耳机插座_品赞电子), however not the exact one I am after. Nor was I able to see one for sale.
I guess I'll reach out to G-Switch and assuming they reply will find a way to source a replacement for the connector I am interested in, however I thought it does not hurt to ask a question here as well. Thanks
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Thanks but that does not bring anything new to the table, does it? If I had a spare and no need for a new connector, I would not have asked the question.Take one from a dead unit.
Alternate solutions do not always come to mind. Not everyone even thinks to look in their junk pile. And in my working days I sometimes asked my local professional acquaintances if they had something useful in theirs. It doesn't hurt to make suggestions.
It is a stereo output hack for headphones?
Or a headset, meaning mic and earphones?
That means 1 ground and L/R, or L /R/Mic?
Wrong aisle...look in cell phone parts.
Common in those, and too cheap and slow selling for Mouser or any other biggie to stock.
It is like 30 to 50 cents US money.
Also too many variants, so it becomes like keeping 50 similar items with minor differences.
And having to deal with customers where it was returned as not quite the same part.
I got the USB / charging socket changed on my cell phone, it is a Samsung, common enough, and the repair guy had like 5 different types in his parts box.
Or a headset, meaning mic and earphones?
That means 1 ground and L/R, or L /R/Mic?
Wrong aisle...look in cell phone parts.
Common in those, and too cheap and slow selling for Mouser or any other biggie to stock.
It is like 30 to 50 cents US money.
Also too many variants, so it becomes like keeping 50 similar items with minor differences.
And having to deal with customers where it was returned as not quite the same part.
I got the USB / charging socket changed on my cell phone, it is a Samsung, common enough, and the repair guy had like 5 different types in his parts box.
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Best take it to a cell phone parts shop, or if your skills are not good enough, get it repaired at a cell phone repair shop, they are used to SMD repairs, which sometimes include track repair.
Ask around, better to take the part physically to where you can compare new and old.
As an analogy, farmers can identify the different sheep in their flock, we can't...it is like that, the repair people will know the right part to use, there are minor variants even in the same part from the same factory.
In the above post I typed 'hack' instead of 'jack', sorry about that.
Ask around, better to take the part physically to where you can compare new and old.
As an analogy, farmers can identify the different sheep in their flock, we can't...it is like that, the repair people will know the right part to use, there are minor variants even in the same part from the same factory.
In the above post I typed 'hack' instead of 'jack', sorry about that.
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Something like this?
It doesn't have to be exactly the same as long as the footprint is the same or close enough
It doesn't have to be exactly the same as long as the footprint is the same or close enough

Thanks everyone for your suggestions so far.
Jack is 4 contacts, TRRS as stated in the initial post.
Plenty of DAPs employ 4-contact plugs, not just phones. In DAPs, 4th contact is there not really for the mic part but for the remote control. Or even just because it was more convenient/cheaper for the manufacturer to source 4 contact plugs despite not making use of all of them.
As a matter of fact, I doubt anything similar is used nowadays in mobile phones - the phones that still have an audio jack tend to have customized plugs, generally (much) smaller so that they can make the most of the scarcity of space available in a phone.
@ Hayden: you've shown arguably one the most commonly available SMD jacks. I even happen to have 8 pieces of this exact model (bought for another application). Size and pins are fairly close to the model I am after indeed, however the functionality is not the same (the one you linked has 2 integrated switches, hence the functions of the contacts is not matching).
One a more general note, absolutely - the replacement jack does not have to be the identical model as long as function and pins are close enough to each other. Having spent quite some time browsing, I was not able however (so far) to find a suitable enough match.
To provide a bit more insight on why I am so "fussy":
- the original plug still works decently, the only complaint is that when testing the DAP under load, THD in one channel is quite a bit higher than the other one and this is definitely a function of imperfect contacts (i.e. when applying lateral pressure on the plug, THD improves) - not something I can hear but something I can measure; of course I can live with this but it's a pity to take this performance penalty when it could easily be addressed
- in extremis, I could improvise and adapt one of the many SMD jacks available for sale that would be the closest to this model, but something I'd rather avoid, mostly due to what would likely be poorer mechanical resistance (the original is really well thought of, mechanical rigidity is I believe the main reason for having a couple of through-hole pins and the reinforcement band)
- as it has been mentioned, such plugs tend to cost a few dozen of cents, provided that I'm able to source the model it would be the logical thing to do (and have some spares to boot)
Lastly and just to exhaust the topic, I did clean the contacts and tried to re-form them, it helped a bit not not in full. Looks like plating worn out and this is enough to impact performance under load.
Jack is 4 contacts, TRRS as stated in the initial post.
Plenty of DAPs employ 4-contact plugs, not just phones. In DAPs, 4th contact is there not really for the mic part but for the remote control. Or even just because it was more convenient/cheaper for the manufacturer to source 4 contact plugs despite not making use of all of them.
As a matter of fact, I doubt anything similar is used nowadays in mobile phones - the phones that still have an audio jack tend to have customized plugs, generally (much) smaller so that they can make the most of the scarcity of space available in a phone.
@ Hayden: you've shown arguably one the most commonly available SMD jacks. I even happen to have 8 pieces of this exact model (bought for another application). Size and pins are fairly close to the model I am after indeed, however the functionality is not the same (the one you linked has 2 integrated switches, hence the functions of the contacts is not matching).
One a more general note, absolutely - the replacement jack does not have to be the identical model as long as function and pins are close enough to each other. Having spent quite some time browsing, I was not able however (so far) to find a suitable enough match.
To provide a bit more insight on why I am so "fussy":
- the original plug still works decently, the only complaint is that when testing the DAP under load, THD in one channel is quite a bit higher than the other one and this is definitely a function of imperfect contacts (i.e. when applying lateral pressure on the plug, THD improves) - not something I can hear but something I can measure; of course I can live with this but it's a pity to take this performance penalty when it could easily be addressed
- in extremis, I could improvise and adapt one of the many SMD jacks available for sale that would be the closest to this model, but something I'd rather avoid, mostly due to what would likely be poorer mechanical resistance (the original is really well thought of, mechanical rigidity is I believe the main reason for having a couple of through-hole pins and the reinforcement band)
- as it has been mentioned, such plugs tend to cost a few dozen of cents, provided that I'm able to source the model it would be the logical thing to do (and have some spares to boot)
Lastly and just to exhaust the topic, I did clean the contacts and tried to re-form them, it helped a bit not not in full. Looks like plating worn out and this is enough to impact performance under load.
SJ2-35894A-SMT
Unfortunately pinout is not compatible, quite far as a matter of fact.
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As a cost cutting step, Samsung and some others have stopped giving the headsets with their cell phones, some were simply trashed.
So you buy your own, if needed, generic 3.5 mm.
Sockets will be needed, as per the PCB, various types will be made.
My suggestion still stands.
As an aside, the charging / USB port is also being made common on all Android brands, maybe the charger will also become an optional item later...More convenient than proprietary connectors.
So you buy your own, if needed, generic 3.5 mm.
Sockets will be needed, as per the PCB, various types will be made.
My suggestion still stands.
As an aside, the charging / USB port is also being made common on all Android brands, maybe the charger will also become an optional item later...More convenient than proprietary connectors.
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