JRC4558 Substitutions

[Skeletor]

Hey everyone. I'm sourcing parts for a Hyped Fuzz build and am having a little trouble finding a JRC4558 dual op amp IC. Is this an absolutely necessary part or could something be subbed in for it?

Thanks in advance.

Edited: originally had the pedal listed as a gerkin. It's actually the Hyped Fuzz. I'm sorry for the careless error.

 

[ICTRock]

since when does the gerkin use an op amp? I thought it used DIP package transistors

 

[Skeletor]

since when does the gerkin use an op amp? I thought it used DIP package transistors

You are right. I'm mistaken. I'm also sourcing parts for a Hyped Fuzz. I just made a list of all the parts and got careless.

I'll see if I can edit this post. If not, I'll delete it.

 

[Betty Wont]

4558 is quite possibly the most common dual op amp out there. https://www.taydaelectronics.com/njm4558d-njm4558-4558-ic-dual-op-amp.html

 

[ICTRock]

in that case I'd consider either the 1458 or the 4580

 

[BuddytheReow]

You'll be fine with pretty much any 4558 opamp out there

 

[Skeletor]

4558 is quite possibly the most common dual op amp out there. https://www.taydaelectronics.com/njm4558d-njm4558-4558-ic-dual-op-amp.html

I'm sorry for the dumb question. I'm still pretty new to building pedals and electronics in general.

So, the actual op amp is the 4558d? And the jrc is like a brand?

 

[Skeletor]

in that case I'd consider either the 1458 or the 4580

So, in the future, how can I know that it is ok to substitute and what to substitute for? Is there a resource for this kind of stuff?

 

[ICTRock]

I'm sorry for the dumb question. I'm still pretty new to building pedals and electronics in general.

So, the actual op amp is the 4558d? And the jrc is like a brand?

Right. 4558 got made by a lot of companies over the years in a lot of package configurations from metal can to SMD

 

[Betty Wont]

I'm sorry for the dumb question. I'm still pretty new to building pedals and electronics in general.

So, the actual op amp is the 4558d? And the jrc is like a brand?

Yes, the prefix is the manufacturer, the number is the model, and the suffix is the package type. Any DIP package 4558 will perform the same.

 

[Betty Wont]

So, in the future, how can I know that it is ok to substitute and what to substitute for? Is there a resource for this kind of stuff?

Google.

 

[Skeletor]

right ... 4558 got made by a lot of companies over the years in a lot of package configurations from metal can to SMD

Ahh. Thank you!

 

[Skeletor]

Google.

I did try, but I guess I just lack a solid base of knowledge to understand what I was looking at or if that particular part/brand was an absolutely necessary part for the sound of the pedal.

Thank you for your help!

 

[ICTRock]

So, in the future, how can I know that it is ok to substitute and what to substitute for? Is there a resource for this kind of stuff?

Did you consult other fz-2 schematics from original traces? Because the 5218 datasheet even tells you good substitutes "The devices have virtually the same characteristics as the 4557, 4558, 4559 and 741 operational amplifiers."

That kind of gives you a flavor for how some of us approach things.

 

[jimilee]

I didn’t see it, so forgive me if someone said it already. The 4558 is a dual opamp, so any dual opamp will work.

 

[szukalski]

Google.

This does rely on answers from people asking the same question We could reach a point where a google search turns up results telling people to google, leading down a rabbit-hole of google links until it reaches a forum post from 1993 which is no longer active. Then someone will have to read a datasheet.

 

[Skeletor]

Did you consult other fz-2 schematics from original traces? Because the 5218 datasheet even tells you good substitutes "The devices have virtually the same characteristics as the 4557, 4558, 4559 and 741 operational amplifiers."

That kind of gives you a flavor for how some of us approach things.

I did not. I didn't even think about doing that. I mostly just stick with pcb's from pedal pcb. I know I can trust them. I'm at a point in this hobby where I don't even know what I dont know!

That's why I appreciate you all helping me out so much!

 

[ICTRock]

I did not. I didn't even think about doing that. I mostly just stick with pcb's from pedal pcb. I know I can trust them. I'm at a point in this hobby where I don't even know what I dont know!

That's why I appreciate you all helping me out so much!

There have been other less detail-oriented pcb and kit vendors in the past that couldn't be trusted to get things correct on a regular basis or made parts substitutions that were more convenient to their particular parts supply chain hence you'd end up with something that either didn't work OR wouldn't sound quite right. You're welcome to profit from some hard lessons learned.