Component Identification

Connor's picture

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Joined: Jun 23, 2019

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Component Identification
June 23, 2019 - 5:30am

Hey there,

New to the forums, hoping I could get some help here.

I'm trying to identify these old components inside of a vintage organ.

https://imgur.com/a/uvzAPYj

I think the green ones are capacitors, right? What do the markings on them mean?

I know the orange ones are transistors but I don't know what the markings mean of them either.

I would really appreciate it if someone could let me know how to identify these vintage components.

Please let me know if you need any ofthere information or better quality pictures.

 

Thanks you,

 

Connor

Abhiemanyu Pandit's picture

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Joined: Jan 21, 2019

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These are ceramic capacitors
June 24, 2019 - 1:44pm

The green ones are ceramic capacitors and 502K means that it is a 0.005 micro farad capacitors. 

Abhiemanyu Pandit's picture

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The transistors are pnp transistors
June 24, 2019 - 1:47pm

The 2SB5 is a PNP transistors made up of silicon with following features:

  • Maximum Collector-Base Voltage |Vcb|: 60 V
  • Maximum Collector-Emitter Voltage |Vce|: 60 V
  • Maximum Emitter-Base Voltage |Veb|: 5 V
  • Maximum Collector Current |Ic max|: 3 V
Bradyen's picture

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Mylar capacitor, wire wound resistor,
June 24, 2019 - 4:48pm

Hey it looks really vintage. as far as I could judge the green capacitor is a polyster capacitor (mylar) with a rating 0.005uF and high voltage. The resistors are wire wound 10k 

Looks like the circuit is used for some high voltage current sensing or voltage sensing application. Where did you get it form? 

I have no clue as to what the orange component is is. Based in no. of pin outs its most likely a transistor 

Connor's picture

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Joined: Jun 23, 2019

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Thank you so much for the replies!
June 25, 2019 - 1:53am

Hey guys,

 

Thanks for getting back to me on this.

The circuit belongs to an old Rheem combo organ from the 60's.

It's one of 12 tone cards, the "G" one to be specific.

 

I should clarify I'm pretty much a novice with these things but I know enough to use a multimeter and solder and I'm anxious to keep learning.

 

I'm for sure replacing all the capacitors in the organ and from what I've seen the orange transistors should be replaced too, does anyone have any recommendations on what modern comments I should be replacing with?

 

Would it be worth replacing the resistors too?

 

Thanks so much,

 

Connor