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| Reverse mount SMT tact switch that can be sub-flush when pressed for protection |
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| Psi:
Has anyone seen reverse-mount SMT tact switches that can't easily be damaged from finger push force because their travel can go sub-flush with 1.6mm PCB when pressed? For my application it would need a proper size plunger/button cap, like 4-6mm diameter for use by a finger. |
| PlainName:
If you've got that cap on then presumably the base of the cap would come up against the PCB to restrict travel? If so, why not just have a normal switch and put a spacer around it to achieve the same thing? |
| floobydust:
I only have ever seen these: https://www.adafruit.com/product/5410 Typical pushbutton tactile switch's post length value is usually from the post end to the back of the switch. Others use the switch's pins. These are 6.5mm minus the back of the switch 4.5mm thickness leaving 2mm... and 0.2mm travel.... and PCB thickness 1.6mm ... gives "0.4mm sticking up". Let us know if you find a vendor offering these in other post lengths. I could not find them anywhere else. |
| Psi:
--- Quote from: floobydust on June 18, 2023, 12:14:39 am ---I only have ever seen these: https://www.adafruit.com/product/5410 Typical pushbutton tactile switch's post length value is usually from the post end to the back of the switch. Others use the switch's pins. These are 6.5mm minus the back of the switch 4.5mm thickness leaving 2mm... and 0.2mm travel.... and PCB thickness 1.6mm ... gives "0.4mm sticking up". Let us know if you find a vendor offering these in other post lengths. I could not find them anywhere else. --- End quote --- Yeah, I was hoping someone else might have seen them but I knew it was a long shot. I couldn't find them either. |
| Psi:
--- Quote from: PlainName on June 17, 2023, 02:32:09 pm ---If you've got that cap on then presumably the base of the cap would come up against the PCB to restrict travel? If so, why not just have a normal switch and put a spacer around it to achieve the same thing? --- End quote --- Currently the cap is a special part for the existing button. It's flat so just passes through the hole. It clicks onto the current tact switch shaft. I was hoping for a button with the cap built in. Like those larger TH tact buttons you can get, but reverse mount and SMT. |
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