Through hole Diode Identification

[connorm]

Hey there,

Newer to electronics but competent enough to take direction, so bear with me please.

How can I identify this diode? Schematics are non existent and there are no markings on the diode itself.

I've removed a corroded one elsewhere in the circuit and need to replace it.

Are all small diodes the same?

Thank you for your time.

 

[Hunter64]

Not all diodes are the same. Do you have a picture of the surroundings of the corroded one?

It might be a 1N4148 but there's no certenty.

 

[PETERDECO]

It looks a little fatter than a 1N4148. I use zener diodes that look like this. What is this circuit? Make, model, function?

 

[Martaine2005]

Perhaps this 1s2473? Your camera angle may be making it look fatter?

Martin

 

[Hunter64]

DO-34 1.6x3.04mm ?

https://en.wikipedia.org/wiki/DO-204

 

[connorm]

Thanks for all the replies guys.

The circuit is transport controls for a Tascam 688 cassette recorder.

It for sure is shorter and stouter than other diodes.

Here's a picture of the diodes in context. I had to remove some other components (that I eventually will need help identifying, like capacitors that look like resistors...) along with the diodes.

https://imgur.com/hk6PRKv

Let me know if theres anything else I can do to help identify them.

Thanks so much!

 

[bertus]

Hello,

It could be an 1N914:
https://www.ebay.com/itm/Genuine-1N...061807?hash=item1ea7ca256f:g:69QAAOSw3ydV3SAM
https://www.pedalhackerelectronics....ose-Si-Diode-Matsushita-1N914-p/ecg519-20.htm

Most times they come with a black band, bot some are shown with a yellow band.

Bertus

 

[connorm]

Thanks Bertus

How would using a slightly different diode effect the circuit? Is there a margin in the specs of diodes to where similar diodes will accomplish the same job?

Also let me clarify, I am dumb.

That being said, is there a way to measure the diode with a multimeter similar to measuring a resistor?

 

[bertus]

Hello,

It looks like the diodes are part of a switch matrix.
I do not think that they are defective, as very low currents are normaly used in those switch matrixes.

Bertus

 

[connorm]

The diodes themselves probably weren't defective but the corrosion had eaten through the legs a few of them and two tactile buttons.

 

[bertus]

Hello,

The 1N914 or 1N4148 will likely do in the circuit.

Bertus

 

[connorm]

Awesome thanks Bertus.

For the record though, is there a way to measure a diode to figure out it's specs?