Seimitsu buttons Lets talk


I own a ton of Sanwa buttons played on sanwa almost exclusively. I know what sanwa is like. Initially I had something like Sanwa vs Seimitsu buttons but I saw this turning into some type of battle between Sanwa vs Seimitsu what I want to know specifically from people who use seimitsu joystick and buttons why do they like it. What do they love about seimitsu buttons / joysticks.


Seimitsu buttons in my experience are less sensitive than Sanwa’s, meaning they won’t trigger with the slightest touch. This isn’t to say they’re stiff or anything, and they’re still very responsive.


I like to train with the flat semitsu snap buttons to work on my timing (Don’t want to rely on double tapping and plinking). For games where attacks can be chained into other attacks with just the press of a button, I prefer semitsu buttons because they are not as sensitive as sanwas so unwanted button presses don’t lead to unwanted attacks (Had this problem with KI3). I always liked their sticks because they did not feel as loose as sanwa sticks and I felt inputting directional commands ( like in Tekken, MK etc) was easier.


Seimitsu buttons very slightly stiffer and less responsive (engages about 0.5 mm later for the ps14g as compared with the sanwa obsf30)


I have both a Sanwa and Seimitsu button stick. I do like the Sanwas for shooting games since I just mash like a nutjob. The Seimitsus do give a nice resistance when pressing. I could go either way for the buttons in general.


I very often rest my fingers on top of the buttons while I’m playing, so Sanwas have always been too light for me.
Ever since I started to use japanese buttons, I’ve always preferred Seimitsus to Sanwas in terms of buttons.

Joysticks, on the other hand, I’ve been using JLFs for years now, and only recently switched to an LS-32 recently. I gotta say that I now prefer the LS-32 due to the shorter throw and pivot depth.


This. I like putting my fingers on top of the buttons and it causes inputs with sanwas. I started off playing on sanwa since it was the standard and quickly realized I liked seimitsu better. My main setup for the longest was ls32 with gn buttons. Now my main stick is ls56, ls40 coming second and ls32 being 3rd. I prefer a shorter throw and a stiffer spring. As for buttons gnc, gn, kn or g, doesn’t matter to me. Love em all


Seimitsus don’t make “slaplaplap” sound.

Make me sad.



I think I actually prefer the GN, GNC and KN buttons over the snap-ins; the larger microswitch has a tad more tension than their smaller siblings in the snap-ins.


I thought they all use the same switch. I’ve replaced switches in gn and kn so maybe I’m wrong


Whoops, I should clarify.
The Seimitsu 30mm screw-in buttons (all colors) use a larger microswitch than the 30mm snap-in clear counterpart, who use the same smaller microswitch that’s in the 24mm buttons. The 30mm snap-in solid colors (of which I don’t own any) appear to use the larger microswitches.
The larger ones have slightly more “crunch” to them.


So the ps14k use the smaller switch? I think there was a period of time when they were discontinued or only available through the aki shop. And that happened to be the period of time I was trying out seimitsu line of buttons.
Another bonus about seimitsu screw ins is the thinner nut. The big orange one on sanwa can be a biatch to screw down on certain layouts. I prefer screw type personally due to versatility of install.
Everyone says gn/gnc/kn feel the same only difference is color selection and ability to add art. Is it just me or do the plain gn feel slightly smoother than the gnc/kn? Don’t know if its because the plastic used to make the plunger clear. It’s minimal but I notice it


While I disagree with Seimitsu buttons being less responsive. More or Less actuation Force and plunger travel does not necessarily means you are going to get better or worst response.
Just ask the Mechanical Keyboard aficionados.

In comparative action of a 30mm Sanwa and 30mm Seimtsu buttons mounted on the same panel, same arcade stick.
both buttons being pressed simultaneously with a wooden ruler, both buttons activate at the same moment.
I used Window 7’s joy.cpl to confirm the activation.

Using Ripster (from Geek Hack) ripometer method US nickle method, I once tested out the force a Sanwa button needs to actuate compared to a Seimitsu Button.
A US Nickel is according to the US Mint exactly 5.000g. weights used for medical testing would give more accurate results. There also can be a slight deviation from the same model button to button.

A typical SANWA OBSF 30MM PUSH BUTTON has a required activation force of approx 65g

A typical SEIMITSU PS-14-GN 30MM PUSH BUTTON has a required activation force of approx 85g

A typical GAME FINGER HBFS-30 30MM PUSH PUSH BUTTON varies with the type of Cherry MX switch used.
-MX Cherry Red is 45g
-MX Cherry Black is 60g
-MX Cherry Brown is 55g
-MX Cherry Blue is 50g

Both Sanwa and Seimitsu have linear action switches that have a low activation point
Both Sanwa and Seimitsu needs to almost bottom out (the plunger touching the bottom surface of the rim body) to activate the switch. Neither button is as more or less responsive than the other.

If someone else wants to dispute my claims, please provide your own documentation from testing and the test method used. Please keep in mind buttons worn from frequent use is going to give different results than brand new push buttons

Arcade button specs?
SDTECHIN.COM (Formerly SDTEKKEN.COM Tech Area) - 2014 Project

Yep. PS-14-K uses the smaller switch.
I think I’m the same boat as you; at the time that I was trying out Seimitsus, the only ones available to me were PS-14-GN and KN, so my baseline was set with those.
I do think you’re right on the smoother GNs compared to the GNCs and KNs; I started out using GNs, then swapped over to KNs for a long time. Then switched to just Ks for a while. Now my main stick is back to just GNs, and it feels a tad nicer.


Dark- I don’t want to dispute your info, but looking at it leads me to believe that during game play my fingers in a resting position onto of a button applies about 70-75gs of force, so the sanwas are a no go for me.

Freedom- yeah I’m not sure if its smoother or the other ones have just a tad on clunkiness to them. I do like gns the most but opt for gnc or kn for artwork purposes. It’s very minor but just wanted to see if anyone felt the same way


That an approximation of how much force the Sanwas needed based on each nickle is weight exactly 5 grams. There will be natural variations with in a collection of NEW SANWA OBSF buttons. worn or broken-in OBSF will require less activation force.
I doubt your fingers in the resting position on the buttons provide 70 to 75 grams of force. If someone have precision weights such those use for medicine or mechanical calibration might have more accurate results for you.


I like the seimitsu buttons over sanwa just because I like to rest my fingers over the buttons. Something about hearing Seimitsu “clack” sounds satisfying.


I prefer OSBF30s with ps14d seimitsu switches in them. They have the same sanwa physical touch but are slightly stiffer - this combo also makes silent sanwas feel much less mushy


Dark- I’m part Italian, I got some meaty ass fingers. Lol nah, thinking about it I actually apply some pressure when resting on buttons. After playing on seimitsu so long I tried to use a stick I Modded for my brother that has ls32 and sanwa buttons. Resting my fingers with the same applied pressure, especially when coming back to my resting position after activating a buttton sequence(combo) would activate the sanwa sometimes, which never happens when I use my seimitsu. There is nothing wrong with sanwa, its just my personal non scientific preference why I prefer seimitsu over sanwa.

Seth- I’ve never tried a sanwa seimitsu mixed button before, maybe ill try it on my bros stick see how it feels


For those that don’t know, semitsu snap in and screw in buttons are not the same. The screw ins look like sanwas but feel stiffer. The snap ins are flatter and have a lower profile. The snap ins are the ones i prefer.