MMBF5457’s and where they at?

thewintersoldier

Well-known member
On top of my stash of thru holes, I bought a ton of smd jfets before they disappeared last summer. I got like 50 5457, 50 j201, 70 mpf102, 30 4393 and some j113. I got them from mouser before that ran out. When I saw smallbear and tayda and digikey we're out I jumped on it. Should be set for the immediate future.
 

DAJE

Well-known member
I have two of the Aion adaptor board 5457s left. I don't need any soon but I'm thinking about doing a Pharmacist which requires four 5457s. So, alternatives would be good.
 
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PedalPCB

Admin (Robert)
Staff member
I noticed @PedalPCB adapterboards aren't dual sided anymore, so I guess we're just install the 5457's flipped around the board layouts

It wasn't necessary. The component libraries that were floating around the net a few years ago had the drain and source reversed on one of them (either MMBFJ201 or MMBF5457, I can't recall)... This was incorrect but went unnoticed because the drain and source are interchangeable anyway.

I left the J201 marking on the adapter just so it isn't confused with some other SOT23 pinout but you can use them with either, no need to reverse anything.


I have a few hundred MMBF5457's that I've been meaning to add to the site I just keep forgetting.
 

DAJE

Well-known member

For what it's worth, I bought 20 x 2N5089s from this seller, they test in spec and I've used them in a couple of pedals which are working as expected. I've bought a few other items from this seller, all working.

I just bought 20 x 2N5457s. If they turn out to be duds, OK, but I'm reasonably optimistic. Not all Chinese sellers are dodgy, in general I've found that as long as you have some critical reasoning skills, you can avoid most of the rip-offs.
 

Barry

Well-known member

For what it's worth, I bought 20 x 2N5089s from this seller, they test in spec and I've used them in a couple of pedals which are working as expected. I've bought a few other items from this seller, all working.

I just bought 20 x 2N5457s. If they turn out to be duds, OK, but I'm reasonably optimistic. Not all Chinese sellers are dodgy, in general I've found that as long as you have some critical reasoning skills, you can avoid most of the rip-offs.
I've used that seller as well and had good results
 

temol

Well-known member
I just bought 20 x 2N5457s. If they turn out to be duds, OK, but I'm reasonably optimistic. Not all Chinese sellers are dodgy, in general I've found that as long as you have some critical reasoning skills, you can avoid most of the rip-offs.

I bought MMBF5457 from them - no luck, all out of specs.
 

finebyfine

Well-known member

For what it's worth, I bought 20 x 2N5089s from this seller, they test in spec and I've used them in a couple of pedals which are working as expected. I've bought a few other items from this seller, all working.

I just bought 20 x 2N5457s. If they turn out to be duds, OK, but I'm reasonably optimistic. Not all Chinese sellers are dodgy, in general I've found that as long as you have some critical reasoning skills, you can avoid most of the rip-offs.

I've bought 2n5457s from this seller before and they're just a shy out of a spec but more than fine for pedals. My ATMega transistor tester didnt recognize them as JFETs but my DCA75 did.
 

DAJE

Well-known member
I've bought 2n5457s from this seller before and they're just a shy out of a spec but more than fine for pedals. My ATMega transistor tester didnt recognize them as JFETs but my DCA75 did.

I have a DCA75 too, went a bit crazy with the spending during one of the interminable lockdowns. The bag of 20 x 2N5089s all measured around hFE 350, which is about right for them, maybe slightly low but - as you say - fine for pedals. And they sound great where I used them, five of them in a Carcass (Carcosa) pedal, so I'm entirely satisfied with them.
 

thewintersoldier

Well-known member
I think we are in the final stretch of the golden age of diy pedal building. Many thru hole transistors, jfets and ICs are either obsolete or entering EOL. Even alot of smd parts are going the way of the dodo. How long before thru hole resistors and caps are phased out? The future is smds, hot air stations, solder paste and ovens. Get it in while we can.
 

thesmokingman

Paid Hater
I think we are in the final stretch of the golden age of diy pedal building. Many thru hole transistors, jfets and ICs are either obsolete or entering EOL. Even alot of smd parts are going the way of the dodo. How long before thru hole resistors and caps are phased out? The future is smds, hot air stations, solder paste and ovens. Get it in while we can.
I should have insisted on PIFmas this year to blow out the cold storage pcbs ... there's shit in there I have no intention of doing and by the time I get around to it there won't be parts left to do it with
 

thewintersoldier

Well-known member
I should have insisted on PIFmas this year to blow out the cold storage pcbs ... there's shit in there I have no intention of doing and by the time I get around to it there won't be parts left to do it with
I have one last push on some of these products that have hard to find parts. Pretty soon the only projects that will be left are low gain overdrives. It's almost not worth it to build germanium fuzz when the transistors costs twice as much as the rest of the build. I'm glad I got into it when I did and knocked out so many great projects. I don't know how deadendfx does it when the bulk of their projects are based around unobtanium. The ultimate future is digital and that makes me more sad than smd.
 
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Kroars

Well-known member
I think we are in the final stretch of the golden age of diy pedal building. Many thru hole transistors, jfets and ICs are either obsolete or entering EOL. Even alot of smd parts are going the way of the dodo. How long before thru hole resistors and caps are phased out? The future is smds, hot air stations, solder paste and ovens. Get it in while we can.
Try this guy. His names Mike, good dude. I’ve been working with him as of late and already received numerous orders that were all professionally packed and shipped quickly. He’s got literally 1,000’s more components than what he has listed on eBay, so if you don’t see something you need just send him a message. He’s also got thousands of smd fets 5457’s, 4393 etc. Mikes super easy to work with and is more than happy to negotiate price. He literally said to me he’s got more products coming in then going out at this point and needs to reverse that asap. Seems like the perfect solution to our predicament.

Also, he’s got a money back guarantee.

 
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finebyfine

Well-known member
I think we are in the final stretch of the golden age of diy pedal building. Many thru hole transistors, jfets and ICs are either obsolete or entering EOL. Even alot of smd parts are going the way of the dodo. How long before thru hole resistors and caps are phased out? The future is smds, hot air stations, solder paste and ovens. Get it in while we can.

This is one of those pedal opinions that I agree with just a hair more than I disagree with it and flip flop every other day.

We all know the negative side any time we look for obsolete components, so let me share some of the things that make me excited to be making pedals now:
  • PCB Fabrication and SMT assembly is constantly getting cheaper and faster. Feel like you don't have the time to breadboard a circuit? (That's a lie, but) Embrace hyper-globalism instead of despairing in it! Have a pcb of it show up in your mailbox in a week for a few bucks instead.
  • DSP is constantly getting better and more accessible to hobbyists. You can run Faust (!!!!) programs on ESP-32s that cost a buck (although the $25 Teensy might be a better option). Garageband, software free with an OS, still has amp emulators that are better than modeling amps you can buy at a guitar center, and I say this as a Katana owner.
  • I probably thought a TO-92 was crazy small the first time I soldered one. SOT-23s don't feel so tiny to me anymore (just in time for most manufacturers to have been moving to smaller packages for years)
  • For all we covet them for, germanium transistors are the ones that killed tubes, not silicon transistors.
  • I like being challenged in this hobby because it makes it keep feeling new. The obsolete parts that we use a lot in pedals are being replaced by something in the industries that dictate manufacturing, even if not a direct substitute, and learning how to cobble that shit together to keep making pedals sounds like exactly the kind of fun challenge I like.
  • Less time to build pedals is more time to find new reasons to avoid practicing :)
All of that said, bending resistor leads and dropping them into PCBs is practically meditation for me. I could gladly do it for hours. Stepping further and further away from the physical elements I enjoy like that is a bummer.
 

Kroars

Well-known member
This is one of those pedal opinions that I agree with just a hair more than I disagree with it and flip flop every other day.

We all know the negative side any time we look for obsolete components, so let me share some of the things that make me excited to be making pedals now:
  • PCB Fabrication and SMT assembly is constantly getting cheaper and faster. Feel like you don't have the time to breadboard a circuit? (That's a lie, but) Embrace hyper-globalism instead of despairing in it! Have a pcb of it show up in your mailbox in a week for a few bucks instead.
  • DSP is constantly getting better and more accessible to hobbyists. You can run Faust (!!!!) programs on ESP-32s that cost a buck (although the $25 Teensy might be a better option). Garageband, software free with an OS, still has amp emulators that are better than modeling amps you can buy at a guitar center, and I say this as a Katana owner.
  • I probably thought a TO-92 was crazy small the first time I soldered one. SOT-23s don't feel so tiny to me anymore (just in time for most manufacturers to have been moving to smaller packages for years)
  • For all we covet them for, germanium transistors are the ones that killed tubes, not silicon transistors.
  • I like being challenged in this hobby because it makes it keep feeling new. The obsolete parts that we use a lot in pedals are being replaced by something in the industries that dictate manufacturing, even if not a direct substitute, and learning how to cobble that shit together to keep making pedals sounds like exactly the kind of fun challenge I like.
  • Less time to build pedals is more time to find new reasons to avoid practicing :)
All of that said, bending resistor leads and dropping them into PCBs is practically meditation for me. I could gladly do it for hours. Stepping further and further away from the physical elements I enjoy like that is a bummer.
Nothing better than a good audiobook and a couple pcbs :)
 

thewintersoldier

Well-known member
This is one of those pedal opinions that I agree with just a hair more than I disagree with it and flip flop every other day.

We all know the negative side any time we look for obsolete components, so let me share some of the things that make me excited to be making pedals now:
  • PCB Fabrication and SMT assembly is constantly getting cheaper and faster. Feel like you don't have the time to breadboard a circuit? (That's a lie, but) Embrace hyper-globalism instead of despairing in it! Have a pcb of it show up in your mailbox in a week for a few bucks instead.
  • DSP is constantly getting better and more accessible to hobbyists. You can run Faust (!!!!) programs on ESP-32s that cost a buck (although the $25 Teensy might be a better option). Garageband, software free with an OS, still has amp emulators that are better than modeling amps you can buy at a guitar center, and I say this as a Katana owner.
  • I probably thought a TO-92 was crazy small the first time I soldered one. SOT-23s don't feel so tiny to me anymore (just in time for most manufacturers to have been moving to smaller packages for years)
  • For all we covet them for, germanium transistors are the ones that killed tubes, not silicon transistors.
  • I like being challenged in this hobby because it makes it keep feeling new. The obsolete parts that we use a lot in pedals are being replaced by something in the industries that dictate manufacturing, even if not a direct substitute, and learning how to cobble that shit together to keep making pedals sounds like exactly the kind of fun challenge I like.
  • Less time to build pedals is more time to find new reasons to avoid practicing :)
All of that said, bending resistor leads and dropping them into PCBs is practically meditation for me. I could gladly do it for hours. Stepping further and further away from the physical elements I enjoy like that is a bummer.
I fully appreciate your insight, as we all have different reasons for why we love this hobby and everyone's journey is different. I like the old school. Always have, always will. It's a dying art form, I like that I can work on Amps and pedal like they did years ago. I think thru hole looks awesome. I don't need everything in a 125b. I also feel like you that there is something relaxing and fun about populating boards. I don't mind smd jfets or transistors and even some ICs. But a whole board? Not for me. I don't want a hot air station, I like the technique of soldering thru hole with an iron. I don't like digital because the future of digital is algorithms. I don't want to program 1s and 0s. I'm all about learning as well but I want to keep that analog aspect, like analog circuit with digital switching or tap tempo. But all digital?.I want loud, heavy tube amps pummeled with fuzz at house shattering levels cause at the heart of it to me, that's what rock n' roll and playing guitar is all about.
 
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fig

Village Idiot
I've enjoyed the SMD stuff so far.
They'll never take my breadboard!
SMD components are cheaper, and take up less space.
I have enough thru-hole to last me! I just need to rent that mini warehouse for my passives.
DSP is good, just different.
I just bought a $3K tube amp!
You can still build analog circuits with SMD.
There goes the badass clipping options.
 
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