Resistor wattage and lead spacing

[arficus]

Total noob to pedal building, so please correct me if/where I flail..
A bit of searching has led me to believe most pedalpcb boards have 5mm lead spacing for most components with 2.5mm for electrolytics.
Is this true for boards that explicitly call for 1/4 watt resistors?
Reason I ask is that the "standard" body length of 1/4 watt resistor is over 6mm. For instance, the Tayda ones that are talked about hereabouts are 6.8mm.
So:
1. Are all the people who buy "full size" 1/4 watt resistors regularly bending leads and letting all the resistors ride up off the boards?
2. Are most people buying "small bodied" resistors (eg Vishay MBA, Yageo MF0, etc)?
3. Or do 1/4 watt boards have different lead spacing?

 

[owlexifry]

1. Are all the people who buy "full size" 1/4 watt resistors regularly bending leads and letting all the resistors ride up off the boards?

1/4 watt is the standard size unless otherwise specified (1/8W for some densely packed PCBs, it WILL be specified).

if you're shopping at tayda, just get METAL FILM 1/4 WATT resistors. this is all you need to know about buying resistors for pedalpcb boards.

2. Are most people buying "small bodied" resistors (eg Vishay MBA, Yageo MF0, etc)?

im buying whatever taydas sells.
brands are not important. these are guitar pedals, not hifi consoles.

3. Or do 1/4 watt boards have different lead spacing?

uh what?
please rephrase.

 

[arficus]

uh what?
please rephrase.

What is the distance between resistor lead holes on typical 1/4 watt board? 5mm? 7mm?

 

[owlexifry]

What is the distance between resistor lead holes on typical 1/4 watt board? 5mm? 7mm?

i don't know the exact number, nor do i need to.
i order 1/4W metal film resistors and everything fits.

 

[Locrian99]

I believe film cap/ceramic cap spacing is 5mm

Resistors is a bit larger

 

[bean]

What is the distance between resistor lead holes on typical 1/4 watt board? 5mm? 7mm?

7.5mm for 1/4W is the most common. AFAIK, it's what's used on almost all PedalPCB boards.

 

[Stickman393]

Nah dude. That ain't right.

PPCB components tend to be 7.5mm for resistors, 5mm for ceramic/film caps, and 2.5mm for Electros.

Some boards use 1/8 watt resistor footprints. Those aren't super common.

 

[Brett]

7.5mm for 1/4W is the most common.

This is news to me. I assumed it was 7.62mm pad spacing this whole time. 0.12mm difference is cutting hairs, but still, did I just pull this number out of a hat or something?

 

[Robert]

I assumed it was 7.62mm pad spacing this whole time.

7.62mm (0.3") for 1/4W resistors, 5.08mm (0.2") for film caps, 2.54mm (0.1") for electrolytics.

I guess the rounding difference is because we're technically working in imperial units, not millimeters.

 

[bean]

This is news to me. I assumed it was 7.62mm pad spacing this whole time. 0.12mm difference is cutting hairs, but still, did I just pull this number out of a hat or something?

Whoops, yeah 7.62mm.

 

[Fama]

Some boards use 1/8 watt resistor footprints. Those aren't super common.

FWIW I've built a couple of those boards with 1/4 watt resistors, they're pretty easy to get there using the lean-to method.

 

[Brett]

7.62mm (0.3") for 1/4W resistors, 5.08mm (0.2") for film caps, 2.54mm (0.1") for electrolytics.

Whoops, yeah 7.62mm.

Thank you both for confirming. 7.5mm pad spacing sounded weird.

I guess the rounding difference is because we're technically working in imperial units, not millimeters.

I prefer to use metric when doing this stuff. I usually only opt for imperial when I'm doing a project that requires the use of a tape measure.

 

[arficus]

Thanks all. This info may be buried in here somewhere, but I searched via google and forum and couldn't find it. Should be easier for others to find now...

 

[Stickman393]

Thanks all. This info may be buried in here somewhere, but I searched via google and forum and couldn't find it. Should be easier for others to find now...

Awww sheitteee did you use the AI results?

Can't trust those tricky machines.

 

[arficus]

Awww sheitteee did you use the AI results?

Can't trust those tricky machines.

No, Searched this forum (via the search here and google). Was able to come to conclusion that film caps were ~5mm and ECs were ~2.5mm, but had no luck finding # for resistors.

 

[darwin999]

This info may be buried in here somewhere, but I searched via google and forum and couldn't find it.

I just added the lead spacing values from @Robert to the PedalPCB Wiki.
See https://wiki.pedalpcb.com/wiki/PCB_Lead_Spacing

 

[Robert]

I just added the lead spacing values from @Robert to the PedalPCB Wiki.
See https://wiki.pedalpcb.com/wiki/PCB_Lead_Spacing

What is your username on the wiki? (or have you registered?) I'm clearing out spam accounts this morning and don't want to delete yours.

 

[Stickman393]

What is your username on the wiki? (or have you registered?) I'm clearing out spam accounts this morning and don't want to delete yours.

Mine's bignaturals6969

 

[Robert]

Mine's bignaturals6969

That's you? .... disregard all private messages.

 

[Stickman393]

That's you? .... disregard all private messages.

Too late!! Hellllooooooo wikifeet.