Hardware 3.5mm jack question

[Deleted member 450456]

Hi. So I'm working on this electronics project that involves a loudspeaker, and am wondering what wattage a 3.5mm audio jack outputs. Thanks

 

[silvershadow]

You may want to wait for someone this is a bit more knowledgeable, but i read two things online:

1: about 50milliwatts. 50mW
2: others says it varies from device to device

 

[Hayato213]

You should provide more info, with like circuit design etc, the output vary base on your circuit design and how much voltage is apply through it.

 

[spinal_cord]

Don't quote me on this, but it's only a connector, it can output whatever you put through it.

 

[silvershadow]

You may want to wait for someone that is a bit more knowledgeable on the subject , but i read two things online:

1: about 50milliwatts. 50mW
2: others says it varies from device to device

 

[Roamin64]

I would suggest to use banana jacks instead of a 3.5mm jack. The jack itself might be able to handle all the wattage you need , but the wires connected to the jack , going to your speaker would most likely be very thin, so you'd need the proper wires along with the jack. The longer the distance to drive your loudspeaker on thin wires, the worst the result will be. If you're driving the loudspeaker really high and too much current goes through it, a lot can happen. Cheap 3.5mm cables will most likely warm up, solder joints could melt or it could simply change the impedance of your setup so much that the sound is bad, with feedback. You could also just use a barrel connector this way you are sure it can handle all the current/power you need. Quality banana jacks can handle a lot more power than 3.5mm jacks with currents usually up to at least 15A. 6.35mm (1/4) jacks that are heavy duty can handle currents up to 15A.

Just looked a few datasheets on jacks from digikey , and most of the state: max voltage 12v , max current 1A . So that's 12 watts.

 

[Deleted member 450456]

Well, the loudspeaker is 5w and 8Ω. The loudspeaker is being driven from a phone's audio jack. Samsung Galaxy S8

This is the female jack: https://www.ebay.ie/itm/3-5mm-Femal...608660?hash=item3d6bae9554:g:vsYAAOSw0vJbP3yy

This is the loudspeaker: https://www.ebay.ie/itm/2-Pcs-5W-8-...527781?hash=item41d763fa25:g:XNMAAOSwv~1aQwDe

The wire would be 22 gauge solid core, but could use some thicker, maybe stranded wire.